Revert Font Awesome 5 upgrade (#8810)

* Revert "Fix some icon names changed by the Font Awesome 5. (#8796)"

This reverts commit 3f9ec3de82c1a3879a2b092672f51c1caca76f5c.

* Revert "Migrate to font-awesome 5.0. (#8799)"

This reverts commit 8bae14591bfb4fc9dd9d89d8082ac0123b03edaa.

* Revert "Fix some icons names, unavailable in fontawesome5 (free license). (#8792)"

This reverts commit b9c727a945fea5afffb3e3a53279164adfc6e88f.

* Revert "Update the icon name changed by the Font Awesome 5. (#8776)"

This reverts commit 17af4d27da484fc35ecd4b4dce2443d24aa35d23.

* Revert "Add bot icon to bot avatars and migrate to newer version of Font Awesome (#8484)"

This reverts commit 4b794e134d427dbc716606324adb9a885a74abec.

54 files changed, 121 insertions, 177 deletions

diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 49621f55f..f8e2c0e11 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -55,7 +55,7 @@ module ApplicationHelper
 
   def fa_icon(icon, attributes = {})
     class_names = attributes[:class]&.split(' ') || []
-    class_names << 'fas'
+    class_names << 'fa'
     class_names += icon.split(' ').map { |cl| "fa-#{cl}" }
 
     content_tag(:i, nil, attributes.merge(class: class_names.join(' ')))
diff --git a/app/javascript/mastodon/common.js b/app/javascript/mastodon/common.js
index fdd3431ab..2b10b8c30 100644
--- a/app/javascript/mastodon/common.js
+++ b/app/javascript/mastodon/common.js
@@ -1,8 +1,7 @@
 import Rails from 'rails-ujs';
 
 export function start() {
-  require('@fortawesome/fontawesome-free/css/fontawesome.css');
-  require('@fortawesome/fontawesome-free/css/solid.css');
+  require('font-awesome/css/font-awesome.css');
   require.context('../images/', true);
 
   Rails.start();
diff --git a/app/javascript/mastodon/components/__tests__/__snapshots__/avatar-test.js.snap b/app/javascript/mastodon/components/__tests__/__snapshots__/avatar-test.js.snap
index 1ab59836a..76ab3374a 100644
--- a/app/javascript/mastodon/components/__tests__/__snapshots__/avatar-test.js.snap
+++ b/app/javascript/mastodon/components/__tests__/__snapshots__/avatar-test.js.snap
@@ -13,11 +13,7 @@ exports[`<Avatar /> Autoplay renders a animated avatar 1`] = `
       "width": "100px",
     }
   }
->
-  <i
-    className="fas fa-fw fa-robot bot-icon"
-  />
-</div>
+/>
 `;
 
 exports[`<Avatar /> Still renders a still avatar 1`] = `
@@ -33,9 +29,5 @@ exports[`<Avatar /> Still renders a still avatar 1`] = `
       "width": "100px",
     }
   }
->
-  <i
-    className="fas fa-fw fa-robot bot-icon"
-  />
-</div>
+/>
 `;
diff --git a/app/javascript/mastodon/components/__tests__/avatar-test.js b/app/javascript/mastodon/components/__tests__/avatar-test.js
index cc99d3a53..dd3f7b7d2 100644
--- a/app/javascript/mastodon/components/__tests__/avatar-test.js
+++ b/app/javascript/mastodon/components/__tests__/avatar-test.js
@@ -10,7 +10,6 @@ describe('<Avatar />', () => {
     display_name: 'Alice',
     avatar: '/animated/alice.gif',
     avatar_static: '/static/alice.jpg',
-    bot: true,
   });
 
   const size     = 100;
diff --git a/app/javascript/mastodon/components/attachment_list.js b/app/javascript/mastodon/components/attachment_list.js
index 14e6cfc65..8e5bb0e0b 100644
--- a/app/javascript/mastodon/components/attachment_list.js
+++ b/app/javascript/mastodon/components/attachment_list.js
@@ -24,7 +24,7 @@ export default class AttachmentList extends ImmutablePureComponent {
 
               return (
                 <li key={attachment.get('id')}>
-                  <a href={displayUrl} target='_blank' rel='noopener'><i className='fas fa-link' /> {filename(displayUrl)}</a>
+                  <a href={displayUrl} target='_blank' rel='noopener'><i className='fa fa-link' /> {filename(displayUrl)}</a>
                 </li>
               );
             })}
@@ -36,7 +36,7 @@ export default class AttachmentList extends ImmutablePureComponent {
     return (
       <div className='attachment-list'>
         <div className='attachment-list__icon'>
-          <i className='fas fa-link' />
+          <i className='fa fa-link' />
         </div>
 
         <ul className='attachment-list__list'>
diff --git a/app/javascript/mastodon/components/avatar.js b/app/javascript/mastodon/components/avatar.js
index e46f1ed76..570505833 100644
--- a/app/javascript/mastodon/components/avatar.js
+++ b/app/javascript/mastodon/components/avatar.js
@@ -1,7 +1,6 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import ImmutablePropTypes from 'react-immutable-proptypes';
-import BotIcon from './bot_icon';
 import { autoPlayGif } from '../initial_state';
 
 export default class Avatar extends React.PureComponent {
@@ -66,9 +65,7 @@ export default class Avatar extends React.PureComponent {
         onMouseEnter={this.handleMouseEnter}
         onMouseLeave={this.handleMouseLeave}
         style={style}
-      >
-        <BotIcon account={account} />
-      </div>
+      />
     );
   }
 
diff --git a/app/javascript/mastodon/components/bot_icon.js b/app/javascript/mastodon/components/bot_icon.js
deleted file mode 100644
index 4d824e762..000000000
--- a/app/javascript/mastodon/components/bot_icon.js
+++ /dev/null
@@ -1,23 +0,0 @@
-import React from 'react';
-import ImmutablePropTypes from 'react-immutable-proptypes';
-import ImmutablePureComponent from 'react-immutable-pure-component';
-
-export default class BotIcon extends ImmutablePureComponent {
-
-  static propTypes = {
-    account: ImmutablePropTypes.map.isRequired,
-  };
-
-  render () {
-    const { account } = this.props;
-
-    if (account.get('bot')) {
-      return (
-        <i className='fas fa-fw fa-robot bot-icon' />
-      );
-    }
-
-    return '';
-  }
-
-}
diff --git a/app/javascript/mastodon/components/column_back_button.js b/app/javascript/mastodon/components/column_back_button.js
index 2560e31ee..8a60c4192 100644
--- a/app/javascript/mastodon/components/column_back_button.js
+++ b/app/javascript/mastodon/components/column_back_button.js
@@ -19,7 +19,7 @@ export default class ColumnBackButton extends React.PureComponent {
   render () {
     return (
       <button onClick={this.handleClick} className='column-back-button'>
-        <i className='fas fa-fw fa-chevron-left column-back-button__icon' />
+        <i className='fa fa-fw fa-chevron-left column-back-button__icon' />
         <FormattedMessage id='column_back_button.label' defaultMessage='Back' />
       </button>
     );
diff --git a/app/javascript/mastodon/components/column_back_button_slim.js b/app/javascript/mastodon/components/column_back_button_slim.js
index a0d111aa7..964c100be 100644
--- a/app/javascript/mastodon/components/column_back_button_slim.js
+++ b/app/javascript/mastodon/components/column_back_button_slim.js
@@ -8,7 +8,7 @@ export default class ColumnBackButtonSlim extends ColumnBackButton {
     return (
       <div className='column-back-button--slim'>
         <div role='button' tabIndex='0' onClick={this.handleClick} className='column-back-button column-back-button--slim-button'>
-          <i className='fas fa-fw fa-chevron-left column-back-button__icon' />
+          <i className='fa fa-fw fa-chevron-left column-back-button__icon' />
           <FormattedMessage id='column_back_button.label' defaultMessage='Back' />
         </div>
       </div>
diff --git a/app/javascript/mastodon/components/column_header.js b/app/javascript/mastodon/components/column_header.js
index 420ce3eef..457508d13 100644
--- a/app/javascript/mastodon/components/column_header.js
+++ b/app/javascript/mastodon/components/column_header.js
@@ -95,22 +95,22 @@ class ColumnHeader extends React.PureComponent {
     }
 
     if (multiColumn && pinned) {
-      pinButton = <button key='pin-button' className='text-btn column-header__setting-btn' onClick={onPin}><i className='fas fa-times' /> <FormattedMessage id='column_header.unpin' defaultMessage='Unpin' /></button>;
+      pinButton = <button key='pin-button' className='text-btn column-header__setting-btn' onClick={onPin}><i className='fa fa fa-times' /> <FormattedMessage id='column_header.unpin' defaultMessage='Unpin' /></button>;
 
       moveButtons = (
         <div key='move-buttons' className='column-header__setting-arrows'>
-          <button title={formatMessage(messages.moveLeft)} aria-label={formatMessage(messages.moveLeft)} className='text-btn column-header__setting-btn' onClick={this.handleMoveLeft}><i className='fas fa-chevron-left' /></button>
-          <button title={formatMessage(messages.moveRight)} aria-label={formatMessage(messages.moveRight)} className='text-btn column-header__setting-btn' onClick={this.handleMoveRight}><i className='fas fa-chevron-right' /></button>
+          <button title={formatMessage(messages.moveLeft)} aria-label={formatMessage(messages.moveLeft)} className='text-btn column-header__setting-btn' onClick={this.handleMoveLeft}><i className='fa fa-chevron-left' /></button>
+          <button title={formatMessage(messages.moveRight)} aria-label={formatMessage(messages.moveRight)} className='text-btn column-header__setting-btn' onClick={this.handleMoveRight}><i className='fa fa-chevron-right' /></button>
         </div>
       );
     } else if (multiColumn) {
-      pinButton = <button key='pin-button' className='text-btn column-header__setting-btn' onClick={onPin}><i className='fas fa-plus' /> <FormattedMessage id='column_header.pin' defaultMessage='Pin' /></button>;
+      pinButton = <button key='pin-button' className='text-btn column-header__setting-btn' onClick={onPin}><i className='fa fa fa-plus' /> <FormattedMessage id='column_header.pin' defaultMessage='Pin' /></button>;
     }
 
     if (!pinned && (multiColumn || showBackButton)) {
       backButton = (
         <button onClick={this.handleBackClick} className='column-header__back-button'>
-          <i className='fas fa-fw fa-chevron-left column-back-button__icon' />
+          <i className='fa fa-fw fa-chevron-left column-back-button__icon' />
           <FormattedMessage id='column_back_button.label' defaultMessage='Back' />
         </button>
       );
@@ -126,7 +126,7 @@ class ColumnHeader extends React.PureComponent {
     }
 
     if (children || multiColumn) {
-      collapseButton = <button className={collapsibleButtonClassName} title={formatMessage(collapsed ? messages.show : messages.hide)} aria-label={formatMessage(collapsed ? messages.show : messages.hide)} aria-pressed={collapsed ? 'false' : 'true'} onClick={this.handleToggleClick}><i className='fas fa-sliders-h' /></button>;
+      collapseButton = <button className={collapsibleButtonClassName} title={formatMessage(collapsed ? messages.show : messages.hide)} aria-label={formatMessage(collapsed ? messages.show : messages.hide)} aria-pressed={collapsed ? 'false' : 'true'} onClick={this.handleToggleClick}><i className='fa fa-sliders' /></button>;
     }
 
     const hasTitle = icon && title;
@@ -136,7 +136,7 @@ class ColumnHeader extends React.PureComponent {
         <h1 className={buttonClassName}>
           {hasTitle && (
             <button onClick={this.handleTitleClick}>
-              <i className={`fas fa-fw fa-${icon} column-header__icon`} />
+              <i className={`fa fa-fw fa-${icon} column-header__icon`} />
               {title}
             </button>
           )}
diff --git a/app/javascript/mastodon/components/icon_button.js b/app/javascript/mastodon/components/icon_button.js
index a303064ff..b96e48fd0 100644
--- a/app/javascript/mastodon/components/icon_button.js
+++ b/app/javascript/mastodon/components/icon_button.js
@@ -86,7 +86,7 @@ export default class IconButton extends React.PureComponent {
           style={style}
           tabIndex={tabIndex}
         >
-          <i className={`fas fa-fw fa-${icon}`} aria-hidden='true' />
+          <i className={`fa fa-fw fa-${icon}`} aria-hidden='true' />
         </button>
       );
     }
@@ -104,7 +104,7 @@ export default class IconButton extends React.PureComponent {
             style={style}
             tabIndex={tabIndex}
           >
-            <i style={{ transform: `rotate(${rotate}deg)` }} className={`fas fa-fw fa-${icon}`} aria-hidden='true' />
+            <i style={{ transform: `rotate(${rotate}deg)` }} className={`fa fa-fw fa-${icon}`} aria-hidden='true' />
           </button>
         )}
       </Motion>
diff --git a/app/javascript/mastodon/components/load_gap.js b/app/javascript/mastodon/components/load_gap.js
index 7c7e8fe1e..ed4d445d0 100644
--- a/app/javascript/mastodon/components/load_gap.js
+++ b/app/javascript/mastodon/components/load_gap.js
@@ -25,7 +25,7 @@ class LoadGap extends React.PureComponent {
 
     return (
       <button className='load-more load-gap' disabled={disabled} onClick={this.handleClick} aria-label={intl.formatMessage(messages.load_more)}>
-        <i className='fas fa-ellipsis-h' />
+        <i className='fa fa-ellipsis-h' />
       </button>
     );
   }
diff --git a/app/javascript/mastodon/components/status.js b/app/javascript/mastodon/components/status.js
index 08fecce5a..90c689a75 100644
--- a/app/javascript/mastodon/components/status.js
+++ b/app/javascript/mastodon/components/status.js
@@ -193,7 +193,7 @@ class Status extends ImmutablePureComponent {
     if (featured) {
       prepend = (
         <div className='status__prepend'>
-          <div className='status__prepend-icon-wrapper'><i className='fas fa-fw fa-thumbtack status__prepend-icon' /></div>
+          <div className='status__prepend-icon-wrapper'><i className='fa fa-fw fa-thumb-tack status__prepend-icon' /></div>
           <FormattedMessage id='status.pinned' defaultMessage='Pinned toot' />
         </div>
       );
@@ -202,7 +202,7 @@ class Status extends ImmutablePureComponent {
 
       prepend = (
         <div className='status__prepend'>
-          <div className='status__prepend-icon-wrapper'><i className='fas fa-fw fa-retweet status__prepend-icon' /></div>
+          <div className='status__prepend-icon-wrapper'><i className='fa fa-fw fa-retweet status__prepend-icon' /></div>
           <FormattedMessage id='status.reblogged_by' defaultMessage='{name} boosted' values={{ name: <a onClick={this.handleAccountClick} data-id={status.getIn(['account', 'id'])} href={status.getIn(['account', 'url'])} className='status__display-name muted'><bdi><strong dangerouslySetInnerHTML={display_name_html} /></bdi></a> }} />
         </div>
       );
diff --git a/app/javascript/mastodon/features/account/components/header.js b/app/javascript/mastodon/features/account/components/header.js
index 4934e7a27..11ae58905 100644
--- a/app/javascript/mastodon/features/account/components/header.js
+++ b/app/javascript/mastodon/features/account/components/header.js
@@ -3,7 +3,6 @@ import ImmutablePropTypes from 'react-immutable-proptypes';
 import PropTypes from 'prop-types';
 import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
 import IconButton from '../../../components/icon_button';
-import BotIcon from '../../../components/bot_icon';
 import Motion from '../../ui/util/optional_motion';
 import spring from 'react-motion/lib/spring';
 import ImmutablePureComponent from 'react-immutable-pure-component';
@@ -68,7 +67,6 @@ class Avatar extends ImmutablePureComponent {
             onBlur={this.handleMouseOut}
           >
             <span style={{ display: 'none' }}>{account.get('acct')}</span>
-            <BotIcon account={account} />
           </a>
         )}
       </Motion>
@@ -140,7 +138,7 @@ class Header extends ImmutablePureComponent {
     } else {
       actionBtn = (
         <div className='account--action-button'>
-          <IconButton size={26} icon='pencil-alt' title={intl.formatMessage(messages.edit_profile)} onClick={this.openEditProfile} />
+          <IconButton size={26} icon='pencil' title={intl.formatMessage(messages.edit_profile)} onClick={this.openEditProfile} />
         </div>
       );
     }
@@ -150,7 +148,7 @@ class Header extends ImmutablePureComponent {
     }
 
     if (account.get('locked')) {
-      lockedIcon = <i className='fas fa-lock' />;
+      lockedIcon = <i className='fa fa-lock' />;
     }
 
     const content         = { __html: account.get('note_emojified') };
@@ -177,7 +175,7 @@ class Header extends ImmutablePureComponent {
                   <dt dangerouslySetInnerHTML={{ __html: pair.get('name_emojified') }} title={pair.get('name')} />
 
                   <dd className={pair.get('verified_at') && 'verified'} title={pair.get('value_plain')}>
-                    {pair.get('verified_at') && <span title={intl.formatMessage(messages.linkVerifiedOn, { date: intl.formatDate(pair.get('verified_at'), dateFormatOptions) })}><i className='fas fa-check verified__mark' /></span>} <span dangerouslySetInnerHTML={{ __html: pair.get('value_emojified') }} />
+                    {pair.get('verified_at') && <span title={intl.formatMessage(messages.linkVerifiedOn, { date: intl.formatDate(pair.get('verified_at'), dateFormatOptions) })}><i className='fa fa-check verified__mark' /></span>} <span dangerouslySetInnerHTML={{ __html: pair.get('value_emojified') }} />
                   </dd>
                 </dl>
               ))}
diff --git a/app/javascript/mastodon/features/account_timeline/components/moved_note.js b/app/javascript/mastodon/features/account_timeline/components/moved_note.js
index ff3290031..280389bba 100644
--- a/app/javascript/mastodon/features/account_timeline/components/moved_note.js
+++ b/app/javascript/mastodon/features/account_timeline/components/moved_note.js
@@ -33,7 +33,7 @@ export default class MovedNote extends ImmutablePureComponent {
     return (
       <div className='account__moved-note'>
         <div className='account__moved-note__message'>
-          <div className='account__moved-note__icon-wrapper'><i className='fas fa-fw fa-suitcase account__moved-note__icon' /></div>
+          <div className='account__moved-note__icon-wrapper'><i className='fa fa-fw fa-suitcase account__moved-note__icon' /></div>
           <FormattedMessage id='account.moved_to' defaultMessage='{name} has moved to:' values={{ name: <bdi><strong dangerouslySetInnerHTML={displayNameHtml} /></bdi> }} />
         </div>
 
diff --git a/app/javascript/mastodon/features/compose/components/compose_form.js b/app/javascript/mastodon/features/compose/components/compose_form.js
index 199d11fcb..365114b93 100644
--- a/app/javascript/mastodon/features/compose/components/compose_form.js
+++ b/app/javascript/mastodon/features/compose/components/compose_form.js
@@ -160,7 +160,7 @@ class ComposeForm extends ImmutablePureComponent {
     let publishText = '';
 
     if (this.props.privacy === 'private' || this.props.privacy === 'direct') {
-      publishText = <span className='compose-form__publish-private'><i className='fas fa-lock' /> {intl.formatMessage(messages.publish)}</span>;
+      publishText = <span className='compose-form__publish-private'><i className='fa fa-lock' /> {intl.formatMessage(messages.publish)}</span>;
     } else {
       publishText = this.props.privacy !== 'unlisted' ? intl.formatMessage(messages.publishLoud, { publish: intl.formatMessage(messages.publish) }) : intl.formatMessage(messages.publish);
     }
diff --git a/app/javascript/mastodon/features/compose/components/privacy_dropdown.js b/app/javascript/mastodon/features/compose/components/privacy_dropdown.js
index 43d0c73a4..7b5482f05 100644
--- a/app/javascript/mastodon/features/compose/components/privacy_dropdown.js
+++ b/app/javascript/mastodon/features/compose/components/privacy_dropdown.js
@@ -132,7 +132,7 @@ class PrivacyDropdownMenu extends React.PureComponent {
             {items.map(item => (
               <div role='option' tabIndex='0' key={item.value} data-index={item.value} onKeyDown={this.handleKeyDown} onClick={this.handleClick} className={classNames('privacy-dropdown__option', { active: item.value === value })} aria-selected={item.value === value} ref={item.value === value ? this.setFocusRef : null}>
                 <div className='privacy-dropdown__option__icon'>
-                  <i className={`fas fa-fw fa-${item.icon}`} />
+                  <i className={`fa fa-fw fa-${item.icon}`} />
                 </div>
 
                 <div className='privacy-dropdown__option__content'>
diff --git a/app/javascript/mastodon/features/compose/components/search.js b/app/javascript/mastodon/features/compose/components/search.js
index 8245dadd6..d203d8780 100644
--- a/app/javascript/mastodon/features/compose/components/search.js
+++ b/app/javascript/mastodon/features/compose/components/search.js
@@ -116,8 +116,8 @@ class Search extends React.PureComponent {
         </label>
 
         <div role='button' tabIndex='0' className='search__icon' onClick={this.handleClear}>
-          <i className={`fas fa-search ${hasValue ? '' : 'active'}`} />
-          <i aria-label={intl.formatMessage(messages.placeholder)} className={`fas fa-times-circle ${hasValue ? 'active' : ''}`} />
+          <i className={`fa fa-search ${hasValue ? '' : 'active'}`} />
+          <i aria-label={intl.formatMessage(messages.placeholder)} className={`fa fa-times-circle ${hasValue ? 'active' : ''}`} />
         </div>
 
         <Overlay show={expanded && !hasValue} placement='bottom' target={this}>
diff --git a/app/javascript/mastodon/features/compose/components/search_results.js b/app/javascript/mastodon/features/compose/components/search_results.js
index 51496c00b..c351b84bb 100644
--- a/app/javascript/mastodon/features/compose/components/search_results.js
+++ b/app/javascript/mastodon/features/compose/components/search_results.js
@@ -22,7 +22,7 @@ export default class SearchResults extends ImmutablePureComponent {
       count   += results.get('accounts').size;
       accounts = (
         <div className='search-results__section'>
-          <h5><i className='fas fa-fw fa-users' /><FormattedMessage id='search_results.accounts' defaultMessage='People' /></h5>
+          <h5><i className='fa fa-fw fa-users' /><FormattedMessage id='search_results.accounts' defaultMessage='People' /></h5>
 
           {results.get('accounts').map(accountId => <AccountContainer key={accountId} id={accountId} />)}
         </div>
@@ -33,7 +33,7 @@ export default class SearchResults extends ImmutablePureComponent {
       count   += results.get('statuses').size;
       statuses = (
         <div className='search-results__section'>
-          <h5><i className='fas fa-fw fa-quote-right' /><FormattedMessage id='search_results.statuses' defaultMessage='Toots' /></h5>
+          <h5><i className='fa fa-fw fa-quote-right' /><FormattedMessage id='search_results.statuses' defaultMessage='Toots' /></h5>
 
           {results.get('statuses').map(statusId => <StatusContainer key={statusId} id={statusId} />)}
         </div>
@@ -44,7 +44,7 @@ export default class SearchResults extends ImmutablePureComponent {
       count += results.get('hashtags').size;
       hashtags = (
         <div className='search-results__section'>
-          <h5><i className='fas fa-fw fa-hashtag' /><FormattedMessage id='search_results.hashtags' defaultMessage='Hashtags' /></h5>
+          <h5><i className='fa fa-fw fa-hashtag' /><FormattedMessage id='search_results.hashtags' defaultMessage='Hashtags' /></h5>
 
           {results.get('hashtags').map(hashtag => <Hashtag key={hashtag.get('name')} hashtag={hashtag} />)}
         </div>
@@ -54,7 +54,7 @@ export default class SearchResults extends ImmutablePureComponent {
     return (
       <div className='search-results'>
         <div className='search-results__header'>
-          <i className='fas fa-search fa-fw' />
+          <i className='fa fa-search fa-fw' />
           <FormattedMessage id='search_results.total' defaultMessage='{count, number} {count, plural, one {result} other {results}}' values={{ count }} />
         </div>
 
diff --git a/app/javascript/mastodon/features/compose/components/upload.js b/app/javascript/mastodon/features/compose/components/upload.js
index fd3f9f94f..e377da90c 100644
--- a/app/javascript/mastodon/features/compose/components/upload.js
+++ b/app/javascript/mastodon/features/compose/components/upload.js
@@ -89,8 +89,8 @@ class Upload extends ImmutablePureComponent {
           {({ scale }) => (
             <div className='compose-form__upload-thumbnail' style={{ transform: `scale(${scale})`, backgroundImage: `url(${media.get('preview_url')})`, backgroundPosition: `${x}% ${y}%` }}>
               <div className={classNames('compose-form__upload__actions', { active })}>
-                <button className='icon-button' onClick={this.handleUndoClick}><i className='fas fa-times' /> <FormattedMessage id='upload_form.undo' defaultMessage='Delete' /></button>
-                {media.get('type') === 'image' && <button className='icon-button' onClick={this.handleFocalPointClick}><i className='fas fa-crosshairs' /> <FormattedMessage id='upload_form.focus' defaultMessage='Crop' /></button>}
+                <button className='icon-button' onClick={this.handleUndoClick}><i className='fa fa-times' /> <FormattedMessage id='upload_form.undo' defaultMessage='Delete' /></button>
+                {media.get('type') === 'image' && <button className='icon-button' onClick={this.handleFocalPointClick}><i className='fa fa-crosshairs' /> <FormattedMessage id='upload_form.focus' defaultMessage='Crop' /></button>}
               </div>
 
               <div className={classNames('compose-form__upload-description', { active })}>
diff --git a/app/javascript/mastodon/features/compose/components/upload_progress.js b/app/javascript/mastodon/features/compose/components/upload_progress.js
index 949989b26..d5e6f19cd 100644
--- a/app/javascript/mastodon/features/compose/components/upload_progress.js
+++ b/app/javascript/mastodon/features/compose/components/upload_progress.js
@@ -21,7 +21,7 @@ export default class UploadProgress extends React.PureComponent {
     return (
       <div className='upload-progress'>
         <div className='upload-progress__icon'>
-          <i className='fas fa-upload' />
+          <i className='fa fa-upload' />
         </div>
 
         <div className='upload-progress__message'>
diff --git a/app/javascript/mastodon/features/compose/index.js b/app/javascript/mastodon/features/compose/index.js
index 398e1fc97..cf1714b71 100644
--- a/app/javascript/mastodon/features/compose/index.js
+++ b/app/javascript/mastodon/features/compose/index.js
@@ -76,21 +76,21 @@ class Compose extends React.PureComponent {
       const { columns } = this.props;
       header = (
         <nav className='drawer__header'>
-          <Link to='/getting-started' className='drawer__tab' title={intl.formatMessage(messages.start)} aria-label={intl.formatMessage(messages.start)}><i role='img' className='fas fa-fw fa-bars' /></Link>
+          <Link to='/getting-started' className='drawer__tab' title={intl.formatMessage(messages.start)} aria-label={intl.formatMessage(messages.start)}><i role='img' className='fa fa-fw fa-bars' /></Link>
           {!columns.some(column => column.get('id') === 'HOME') && (
-            <Link to='/timelines/home' className='drawer__tab' title={intl.formatMessage(messages.home_timeline)} aria-label={intl.formatMessage(messages.home_timeline)}><i role='img' className='fas fa-fw fa-home' /></Link>
+            <Link to='/timelines/home' className='drawer__tab' title={intl.formatMessage(messages.home_timeline)} aria-label={intl.formatMessage(messages.home_timeline)}><i role='img' className='fa fa-fw fa-home' /></Link>
           )}
           {!columns.some(column => column.get('id') === 'NOTIFICATIONS') && (
-            <Link to='/notifications' className='drawer__tab' title={intl.formatMessage(messages.notifications)} aria-label={intl.formatMessage(messages.notifications)}><i role='img' className='fas fa-fw fa-bell' /></Link>
+            <Link to='/notifications' className='drawer__tab' title={intl.formatMessage(messages.notifications)} aria-label={intl.formatMessage(messages.notifications)}><i role='img' className='fa fa-fw fa-bell' /></Link>
           )}
           {!columns.some(column => column.get('id') === 'COMMUNITY') && (
-            <Link to='/timelines/public/local' className='drawer__tab' title={intl.formatMessage(messages.community)} aria-label={intl.formatMessage(messages.community)}><i role='img' className='fas fa-fw fa-users' /></Link>
+            <Link to='/timelines/public/local' className='drawer__tab' title={intl.formatMessage(messages.community)} aria-label={intl.formatMessage(messages.community)}><i role='img' className='fa fa-fw fa-users' /></Link>
           )}
           {!columns.some(column => column.get('id') === 'PUBLIC') && (
-            <Link to='/timelines/public' className='drawer__tab' title={intl.formatMessage(messages.public)} aria-label={intl.formatMessage(messages.public)}><i role='img' className='fas fa-fw fa-globe' /></Link>
+            <Link to='/timelines/public' className='drawer__tab' title={intl.formatMessage(messages.public)} aria-label={intl.formatMessage(messages.public)}><i role='img' className='fa fa-fw fa-globe' /></Link>
           )}
-          <a href='/settings/preferences' className='drawer__tab' title={intl.formatMessage(messages.preferences)} aria-label={intl.formatMessage(messages.preferences)}><i role='img' className='fas fa-fw fa-cog' /></a>
-          <a href='/auth/sign_out' className='drawer__tab' data-method='delete' title={intl.formatMessage(messages.logout)} aria-label={intl.formatMessage(messages.logout)}><i role='img' className='fas fa-fw fa-sign-out-alt' /></a>
+          <a href='/settings/preferences' className='drawer__tab' title={intl.formatMessage(messages.preferences)} aria-label={intl.formatMessage(messages.preferences)}><i role='img' className='fa fa-fw fa-cog' /></a>
+          <a href='/auth/sign_out' className='drawer__tab' data-method='delete' title={intl.formatMessage(messages.logout)} aria-label={intl.formatMessage(messages.logout)}><i role='img' className='fa fa-fw fa-sign-out' /></a>
         </nav>
       );
     }
diff --git a/app/javascript/mastodon/features/getting_started/index.js b/app/javascript/mastodon/features/getting_started/index.js
index 2b70b7501..d5ba5cbce 100644
--- a/app/javascript/mastodon/features/getting_started/index.js
+++ b/app/javascript/mastodon/features/getting_started/index.js
@@ -109,7 +109,7 @@ class GettingStarted extends ImmutablePureComponent {
     if (!multiColumn) {
       navItems.push(
         <ColumnSubheading key={i++} text={intl.formatMessage(messages.settings_subheading)} />,
-        <ColumnLink key={i++} icon='cogs' text={intl.formatMessage(messages.preferences)} href='/settings/preferences' />,
+        <ColumnLink key={i++} icon='gears' text={intl.formatMessage(messages.preferences)} href='/settings/preferences' />,
       );
 
       height += 34 + 48;
@@ -120,7 +120,7 @@ class GettingStarted extends ImmutablePureComponent {
         {multiColumn && <div className='column-header__wrapper'>
           <h1 className='column-header'>
             <button>
-              <i className='fas fa-bars fa-fw column-header__icon' />
+              <i className='fa fa-bars fa-fw column-header__icon' />
               <FormattedMessage id='getting_started.heading' defaultMessage='Getting started' />
             </button>
           </h1>
diff --git a/app/javascript/mastodon/features/list_editor/components/search.js b/app/javascript/mastodon/features/list_editor/components/search.js
index 24f2c7d5d..f7617fe58 100644
--- a/app/javascript/mastodon/features/list_editor/components/search.js
+++ b/app/javascript/mastodon/features/list_editor/components/search.js
@@ -65,8 +65,8 @@ class Search extends React.PureComponent {
         </label>
 
         <div role='button' tabIndex='0' className='search__icon' onClick={this.handleClear}>
-          <i className={classNames('fas fa-search', { active: !hasValue })} />
-          <i aria-label={intl.formatMessage(messages.search)} className={classNames('fas fa-times-circle', { active: hasValue })} />
+          <i className={classNames('fa fa-search', { active: !hasValue })} />
+          <i aria-label={intl.formatMessage(messages.search)} className={classNames('fa fa-times-circle', { active: hasValue })} />
         </div>
       </div>
     );
diff --git a/app/javascript/mastodon/features/list_timeline/index.js b/app/javascript/mastodon/features/list_timeline/index.js
index cdfb068cf..5b047ace4 100644
--- a/app/javascript/mastodon/features/list_timeline/index.js
+++ b/app/javascript/mastodon/features/list_timeline/index.js
@@ -150,11 +150,11 @@ class ListTimeline extends React.PureComponent {
         >
           <div className='column-header__links'>
             <button className='text-btn column-header__setting-btn' tabIndex='0' onClick={this.handleEditClick}>
-              <i className='fas fa-pencil-alt' /> <FormattedMessage id='lists.edit' defaultMessage='Edit list' />
+              <i className='fa fa-pencil' /> <FormattedMessage id='lists.edit' defaultMessage='Edit list' />
             </button>
 
             <button className='text-btn column-header__setting-btn' tabIndex='0' onClick={this.handleDeleteClick}>
-              <i className='fas fa-trash-alt' /> <FormattedMessage id='lists.delete' defaultMessage='Delete list' />
+              <i className='fa fa-trash' /> <FormattedMessage id='lists.delete' defaultMessage='Delete list' />
             </button>
           </div>
 
diff --git a/app/javascript/mastodon/features/notifications/components/clear_column_button.js b/app/javascript/mastodon/features/notifications/components/clear_column_button.js
index ea1249e86..e0bf4c82d 100644
--- a/app/javascript/mastodon/features/notifications/components/clear_column_button.js
+++ b/app/javascript/mastodon/features/notifications/components/clear_column_button.js
@@ -10,7 +10,7 @@ export default class ClearColumnButton extends React.PureComponent {
 
   render () {
     return (
-      <button className='text-btn column-header__setting-btn' tabIndex='0' onClick={this.props.onClick}><i className='fas fa-eraser' /> <FormattedMessage id='notifications.clear' defaultMessage='Clear notifications' /></button>
+      <button className='text-btn column-header__setting-btn' tabIndex='0' onClick={this.props.onClick}><i className='fa fa-eraser' /> <FormattedMessage id='notifications.clear' defaultMessage='Clear notifications' /></button>
     );
   }
 
diff --git a/app/javascript/mastodon/features/notifications/components/notification.js b/app/javascript/mastodon/features/notifications/components/notification.js
index 8776f8be0..8df6830c5 100644
--- a/app/javascript/mastodon/features/notifications/components/notification.js
+++ b/app/javascript/mastodon/features/notifications/components/notification.js
@@ -83,7 +83,7 @@ class Notification extends ImmutablePureComponent {
         <div className='notification notification-follow focusable' tabIndex='0' aria-label={notificationForScreenReader(intl, intl.formatMessage({ id: 'notification.follow', defaultMessage: '{name} followed you' }, { name: account.get('acct') }), notification.get('created_at'))}>
           <div className='notification__message'>
             <div className='notification__favourite-icon-wrapper'>
-              <i className='fas fa-fw fa-user-plus' />
+              <i className='fa fa-fw fa-user-plus' />
             </div>
             <span title={notification.get('created_at')}>
               <FormattedMessage id='notification.follow' defaultMessage='{name} followed you' values={{ name: link }} />
@@ -117,7 +117,7 @@ class Notification extends ImmutablePureComponent {
         <div className='notification notification-favourite focusable' tabIndex='0' aria-label={notificationForScreenReader(intl, intl.formatMessage({ id: 'notification.favourite', defaultMessage: '{name} favourited your status' }, { name: notification.getIn(['account', 'acct']) }), notification.get('created_at'))}>
           <div className='notification__message'>
             <div className='notification__favourite-icon-wrapper'>
-              <i className='fas fa-fw fa-star star-icon' />
+              <i className='fa fa-fw fa-star star-icon' />
             </div>
             <FormattedMessage id='notification.favourite' defaultMessage='{name} favourited your status' values={{ name: link }} />
           </div>
@@ -136,7 +136,7 @@ class Notification extends ImmutablePureComponent {
         <div className='notification notification-reblog focusable' tabIndex='0' aria-label={notificationForScreenReader(intl, intl.formatMessage({ id: 'notification.reblog', defaultMessage: '{name} boosted your status' }, { name: notification.getIn(['account', 'acct']) }), notification.get('created_at'))}>
           <div className='notification__message'>
             <div className='notification__favourite-icon-wrapper'>
-              <i className='fas fa-fw fa-retweet' />
+              <i className='fa fa-fw fa-retweet' />
             </div>
             <FormattedMessage id='notification.reblog' defaultMessage='{name} boosted your status' values={{ name: link }} />
           </div>
diff --git a/app/javascript/mastodon/features/pinned_statuses/index.js b/app/javascript/mastodon/features/pinned_statuses/index.js
index 298d0f8c5..98cdbda3c 100644
--- a/app/javascript/mastodon/features/pinned_statuses/index.js
+++ b/app/javascript/mastodon/features/pinned_statuses/index.js
@@ -46,7 +46,7 @@ class PinnedStatuses extends ImmutablePureComponent {
     const { intl, shouldUpdateScroll, statusIds, hasMore } = this.props;
 
     return (
-      <Column icon='thumbtack' heading={intl.formatMessage(messages.heading)} ref={this.setRef}>
+      <Column icon='thumb-tack' heading={intl.formatMessage(messages.heading)} ref={this.setRef}>
         <ColumnBackButtonSlim />
         <StatusList
           statusIds={statusIds}
diff --git a/app/javascript/mastodon/features/status/components/card.js b/app/javascript/mastodon/features/status/components/card.js
index 65259cb84..b52f3c4fa 100644
--- a/app/javascript/mastodon/features/status/components/card.js
+++ b/app/javascript/mastodon/features/status/components/card.js
@@ -173,8 +173,8 @@ export default class Card extends React.PureComponent {
 
             <div className='status-card__actions'>
               <div>
-                <button onClick={this.handleEmbedClick}><i className={`fas fa-${iconVariant}`} /></button>
-                <a href={card.get('url')} target='_blank' rel='noopener'><i className='fas fa-external-link-alt' /></a>
+                <button onClick={this.handleEmbedClick}><i className={`fa fa-${iconVariant}`} /></button>
+                <a href={card.get('url')} target='_blank' rel='noopener'><i className='fa fa-external-link' /></a>
               </div>
             </div>
           </div>
diff --git a/app/javascript/mastodon/features/status/components/detailed_status.js b/app/javascript/mastodon/features/status/components/detailed_status.js
index 7f5d50743..b4bbda161 100644
--- a/app/javascript/mastodon/features/status/components/detailed_status.js
+++ b/app/javascript/mastodon/features/status/components/detailed_status.js
@@ -94,10 +94,10 @@ export default class DetailedStatus extends ImmutablePureComponent {
     }
 
     if (status.get('visibility') === 'private') {
-      reblogLink = <i className={`fas fa-${reblogIcon}`} />;
+      reblogLink = <i className={`fa fa-${reblogIcon}`} />;
     } else {
       reblogLink = (<Link to={`/statuses/${status.get('id')}/reblogs`} className='detailed-status__link'>
-        <i className={`fas fa-${reblogIcon}`} />
+        <i className={`fa fa-${reblogIcon}`} />
         <span className='detailed-status__reblogs'>
           <FormattedNumber value={status.get('reblogs_count')} />
         </span>
@@ -119,7 +119,7 @@ export default class DetailedStatus extends ImmutablePureComponent {
           <a className='detailed-status__datetime' href={status.get('url')} target='_blank' rel='noopener'>
             <FormattedDate value={new Date(status.get('created_at'))} hour12={false} year='numeric' month='short' day='2-digit' hour='2-digit' minute='2-digit' />
           </a>{applicationLink} · {reblogLink} · <Link to={`/statuses/${status.get('id')}/favourites`} className='detailed-status__link'>
-            <i className='fas fa-star' />
+            <i className='fa fa-star' />
             <span className='detailed-status__favorites'>
               <FormattedNumber value={status.get('favourites_count')} />
             </span>
diff --git a/app/javascript/mastodon/features/status/index.js b/app/javascript/mastodon/features/status/index.js
index a9fe4c885..7d1bc2ca4 100644
--- a/app/javascript/mastodon/features/status/index.js
+++ b/app/javascript/mastodon/features/status/index.js
@@ -410,7 +410,7 @@ class Status extends ImmutablePureComponent {
         <ColumnHeader
           showBackButton
           extraButton={(
-            <button className='column-header__button' title={intl.formatMessage(status.get('hidden') ? messages.revealAll : messages.hideAll)} aria-label={intl.formatMessage(status.get('hidden') ? messages.revealAll : messages.hideAll)} onClick={this.handleToggleAll} aria-pressed={status.get('hidden') ? 'false' : 'true'}><i className={`fas fa-${status.get('hidden') ? 'eye-slash' : 'eye'}`} /></button>
+            <button className='column-header__button' title={intl.formatMessage(status.get('hidden') ? messages.revealAll : messages.hideAll)} aria-label={intl.formatMessage(status.get('hidden') ? messages.revealAll : messages.hideAll)} onClick={this.handleToggleAll} aria-pressed={status.get('hidden') ? 'false' : 'true'}><i className={`fa fa-${status.get('hidden') ? 'eye-slash' : 'eye'}`} /></button>
           )}
         />
 
diff --git a/app/javascript/mastodon/features/ui/components/boost_modal.js b/app/javascript/mastodon/features/ui/components/boost_modal.js
index f20ea4c36..b128e67d2 100644
--- a/app/javascript/mastodon/features/ui/components/boost_modal.js
+++ b/app/javascript/mastodon/features/ui/components/boost_modal.js
@@ -74,7 +74,7 @@ class BoostModal extends ImmutablePureComponent {
         </div>
 
         <div className='boost-modal__action-bar'>
-          <div><FormattedMessage id='boost_modal.combo' defaultMessage='You can press {combo} to skip this next time' values={{ combo: <span>Shift + <i className='fas fa-retweet' /></span> }} /></div>
+          <div><FormattedMessage id='boost_modal.combo' defaultMessage='You can press {combo} to skip this next time' values={{ combo: <span>Shift + <i className='fa fa-retweet' /></span> }} /></div>
           <Button text={intl.formatMessage(messages.reblog)} onClick={this.handleReblog} ref={this.setRef} />
         </div>
       </div>
diff --git a/app/javascript/mastodon/features/ui/components/column_header.js b/app/javascript/mastodon/features/ui/components/column_header.js
index db544b7d6..e8bdd8054 100644
--- a/app/javascript/mastodon/features/ui/components/column_header.js
+++ b/app/javascript/mastodon/features/ui/components/column_header.js
@@ -21,7 +21,7 @@ export default class ColumnHeader extends React.PureComponent {
     let iconElement = '';
 
     if (icon) {
-      iconElement = <i className={`fas fa-fw fa-${icon} column-header__icon`} />;
+      iconElement = <i className={`fa fa-fw fa-${icon} column-header__icon`} />;
     }
 
     return (
diff --git a/app/javascript/mastodon/features/ui/components/column_link.js b/app/javascript/mastodon/features/ui/components/column_link.js
index f6bb4f6f6..25c2d1cf8 100644
--- a/app/javascript/mastodon/features/ui/components/column_link.js
+++ b/app/javascript/mastodon/features/ui/components/column_link.js
@@ -8,7 +8,7 @@ const ColumnLink = ({ icon, text, to, href, method, badge }) => {
   if (href) {
     return (
       <a href={href} className='column-link' data-method={method}>
-        <i className={`fas fa-fw fa-${icon} column-link__icon`} />
+        <i className={`fa fa-fw fa-${icon} column-link__icon`} />
         {text}
         {badgeElement}
       </a>
@@ -16,7 +16,7 @@ const ColumnLink = ({ icon, text, to, href, method, badge }) => {
   } else {
     return (
       <Link to={to} className='column-link'>
-        <i className={`fas fa-fw fa-${icon} column-link__icon`} />
+        <i className={`fa fa-fw fa-${icon} column-link__icon`} />
         {text}
         {badgeElement}
       </Link>
diff --git a/app/javascript/mastodon/features/ui/components/columns_area.js b/app/javascript/mastodon/features/ui/components/columns_area.js
index f3ba3ba13..ed338c2eb 100644
--- a/app/javascript/mastodon/features/ui/components/columns_area.js
+++ b/app/javascript/mastodon/features/ui/components/columns_area.js
@@ -160,7 +160,7 @@ class ColumnsArea extends ImmutablePureComponent {
     this.pendingIndex = null;
 
     if (singleColumn) {
-      const floatingActionButton = shouldHideFAB(this.context.router.history.location.pathname) ? null : <Link key='floating-action-button' to='/statuses/new' className='floating-action-button' aria-label={intl.formatMessage(messages.publish)}><i className='fas fa-pencil-alt' /></Link>;
+      const floatingActionButton = shouldHideFAB(this.context.router.history.location.pathname) ? null : <Link key='floating-action-button' to='/statuses/new' className='floating-action-button' aria-label={intl.formatMessage(messages.publish)}><i className='fa fa-pencil' /></Link>;
 
       return columnIndex !== -1 ? [
         <ReactSwipeableViews key='content' index={columnIndex} onChangeIndex={this.handleSwipe} onTransitionEnd={this.handleAnimationEnd} animateTransitions={shouldAnimate} springConfig={{ duration: '400ms', delay: '0s', easeFunction: 'ease' }} style={{ height: '100%' }}>
diff --git a/app/javascript/mastodon/features/ui/components/media_modal.js b/app/javascript/mastodon/features/ui/components/media_modal.js
index 9aa336e37..d29a4a6a7 100644
--- a/app/javascript/mastodon/features/ui/components/media_modal.js
+++ b/app/javascript/mastodon/features/ui/components/media_modal.js
@@ -108,8 +108,8 @@ class MediaModal extends ImmutablePureComponent {
     const index = this.getIndex();
     let pagination = [];
 
-    const leftNav  = media.size > 1 && <button tabIndex='0' className='media-modal__nav media-modal__nav--left' onClick={this.handlePrevClick} aria-label={intl.formatMessage(messages.previous)}><i className='fas fa-fw fa-chevron-left' /></button>;
-    const rightNav = media.size > 1 && <button tabIndex='0' className='media-modal__nav  media-modal__nav--right' onClick={this.handleNextClick} aria-label={intl.formatMessage(messages.next)}><i className='fas fa-fw fa-chevron-right' /></button>;
+    const leftNav  = media.size > 1 && <button tabIndex='0' className='media-modal__nav media-modal__nav--left' onClick={this.handlePrevClick} aria-label={intl.formatMessage(messages.previous)}><i className='fa fa-fw fa-chevron-left' /></button>;
+    const rightNav = media.size > 1 && <button tabIndex='0' className='media-modal__nav  media-modal__nav--right' onClick={this.handleNextClick} aria-label={intl.formatMessage(messages.next)}><i className='fa fa-fw fa-chevron-right' /></button>;
 
     if (media.size > 1) {
       pagination = media.map((item, i) => {
diff --git a/app/javascript/mastodon/features/ui/components/onboarding_modal.js b/app/javascript/mastodon/features/ui/components/onboarding_modal.js
index 3688d9412..25241bcd0 100644
--- a/app/javascript/mastodon/features/ui/components/onboarding_modal.js
+++ b/app/javascript/mastodon/features/ui/components/onboarding_modal.js
@@ -262,11 +262,11 @@ class OnboardingModal extends React.PureComponent {
 
     const nextOrDoneBtn = hasMore ? (
       <button onClick={this.handleNext} className='onboarding-modal__nav onboarding-modal__next shake-bottom'>
-        <FormattedMessage id='onboarding.next' defaultMessage='Next' /> <i className='fas fa-fw fa-chevron-right' />
+        <FormattedMessage id='onboarding.next' defaultMessage='Next' /> <i className='fa fa-fw fa-chevron-right' />
       </button>
     ) : (
       <button onClick={this.handleClose} className='onboarding-modal__nav onboarding-modal__done shake-bottom'>
-        <FormattedMessage id='onboarding.done' defaultMessage='Done' /> <i className='fas fa-fw fa-check' />
+        <FormattedMessage id='onboarding.done' defaultMessage='Done' /> <i className='fa fa-fw fa-check' />
       </button>
     );
 
diff --git a/app/javascript/mastodon/features/ui/components/tabs_bar.js b/app/javascript/mastodon/features/ui/components/tabs_bar.js
index 3f2e5478a..16236ea51 100644
--- a/app/javascript/mastodon/features/ui/components/tabs_bar.js
+++ b/app/javascript/mastodon/features/ui/components/tabs_bar.js
@@ -6,14 +6,14 @@ import { debounce } from 'lodash';
 import { isUserTouching } from '../../../is_mobile';
 
 export const links = [
-  <NavLink className='tabs-bar__link primary' to='/timelines/home' data-preview-title-id='column.home' data-preview-icon='home' ><i className='fas fa-fw fa-home' /><FormattedMessage id='tabs_bar.home' defaultMessage='Home' /></NavLink>,
-  <NavLink className='tabs-bar__link primary' to='/notifications' data-preview-title-id='column.notifications' data-preview-icon='bell' ><i className='fas fa-fw fa-bell' /><FormattedMessage id='tabs_bar.notifications' defaultMessage='Notifications' /></NavLink>,
+  <NavLink className='tabs-bar__link primary' to='/timelines/home' data-preview-title-id='column.home' data-preview-icon='home' ><i className='fa fa-fw fa-home' /><FormattedMessage id='tabs_bar.home' defaultMessage='Home' /></NavLink>,
+  <NavLink className='tabs-bar__link primary' to='/notifications' data-preview-title-id='column.notifications' data-preview-icon='bell' ><i className='fa fa-fw fa-bell' /><FormattedMessage id='tabs_bar.notifications' defaultMessage='Notifications' /></NavLink>,
 
-  <NavLink className='tabs-bar__link secondary' to='/timelines/public/local' data-preview-title-id='column.community' data-preview-icon='users' ><i className='fas fa-fw fa-users' /><FormattedMessage id='tabs_bar.local_timeline' defaultMessage='Local' /></NavLink>,
-  <NavLink className='tabs-bar__link secondary' exact to='/timelines/public' data-preview-title-id='column.public' data-preview-icon='globe' ><i className='fas fa-fw fa-globe' /><FormattedMessage id='tabs_bar.federated_timeline' defaultMessage='Federated' /></NavLink>,
-  <NavLink className='tabs-bar__link primary' to='/search' data-preview-title-id='tabs_bar.search' data-preview-icon='bell' ><i className='fas fa-fw fa-search' /><FormattedMessage id='tabs_bar.search' defaultMessage='Search' /></NavLink>,
+  <NavLink className='tabs-bar__link secondary' to='/timelines/public/local' data-preview-title-id='column.community' data-preview-icon='users' ><i className='fa fa-fw fa-users' /><FormattedMessage id='tabs_bar.local_timeline' defaultMessage='Local' /></NavLink>,
+  <NavLink className='tabs-bar__link secondary' exact to='/timelines/public' data-preview-title-id='column.public' data-preview-icon='globe' ><i className='fa fa-fw fa-globe' /><FormattedMessage id='tabs_bar.federated_timeline' defaultMessage='Federated' /></NavLink>,
+  <NavLink className='tabs-bar__link primary' to='/search' data-preview-title-id='tabs_bar.search' data-preview-icon='bell' ><i className='fa fa-fw fa-search' /><FormattedMessage id='tabs_bar.search' defaultMessage='Search' /></NavLink>,
 
-  <NavLink className='tabs-bar__link primary' style={{ flexGrow: '0', flexBasis: '30px' }} to='/getting-started' data-preview-title-id='getting_started.heading' data-preview-icon='bars' ><i className='fas fa-fw fa-bars' /></NavLink>,
+  <NavLink className='tabs-bar__link primary' style={{ flexGrow: '0', flexBasis: '30px' }} to='/getting-started' data-preview-title-id='getting_started.heading' data-preview-icon='bars' ><i className='fa fa-fw fa-bars' /></NavLink>,
 ];
 
 export function getIndex (path) {
diff --git a/app/javascript/mastodon/features/video/index.js b/app/javascript/mastodon/features/video/index.js
index e1e284b5a..67f7580b9 100644
--- a/app/javascript/mastodon/features/video/index.js
+++ b/app/javascript/mastodon/features/video/index.js
@@ -353,10 +353,10 @@ class Video extends React.PureComponent {
 
           <div className='video-player__buttons-bar'>
             <div className='video-player__buttons left'>
-              <button type='button' aria-label={intl.formatMessage(paused ? messages.play : messages.pause)} onClick={this.togglePlay}><i className={classNames('fas fa-fw', { 'fa-play': paused, 'fa-pause': !paused })} /></button>
-              <button type='button' aria-label={intl.formatMessage(muted ? messages.unmute : messages.mute)} onClick={this.toggleMute}><i className={classNames('fas fa-fw', { 'fa-volume-off': muted, 'fa-volume-up': !muted })} /></button>
+              <button type='button' aria-label={intl.formatMessage(paused ? messages.play : messages.pause)} onClick={this.togglePlay}><i className={classNames('fa fa-fw', { 'fa-play': paused, 'fa-pause': !paused })} /></button>
+              <button type='button' aria-label={intl.formatMessage(muted ? messages.unmute : messages.mute)} onClick={this.toggleMute}><i className={classNames('fa fa-fw', { 'fa-volume-off': muted, 'fa-volume-up': !muted })} /></button>
 
-              {!onCloseVideo && <button type='button' aria-label={intl.formatMessage(messages.hide)} onClick={this.toggleReveal}><i className='fas fa-fw fa-eye' /></button>}
+              {!onCloseVideo && <button type='button' aria-label={intl.formatMessage(messages.hide)} onClick={this.toggleReveal}><i className='fa fa-fw fa-eye' /></button>}
 
               {(detailed || fullscreen) &&
                 <span>
@@ -368,9 +368,9 @@ class Video extends React.PureComponent {
             </div>
 
             <div className='video-player__buttons right'>
-              {(!fullscreen && onOpenVideo) && <button type='button' aria-label={intl.formatMessage(messages.expand)} onClick={this.handleOpenVideo}><i className='fas fa-fw fa-expand' /></button>}
-              {onCloseVideo && <button type='button' aria-label={intl.formatMessage(messages.close)} onClick={this.handleCloseVideo}><i className='fas fa-fw fa-compress' /></button>}
-              <button type='button' aria-label={intl.formatMessage(fullscreen ? messages.exit_fullscreen : messages.fullscreen)} onClick={this.toggleFullscreen}><i className={classNames('fas fa-fw', { 'fa-expand-arrows-alt': !fullscreen, 'fa-compress': fullscreen })} /></button>
+              {(!fullscreen && onOpenVideo) && <button type='button' aria-label={intl.formatMessage(messages.expand)} onClick={this.handleOpenVideo}><i className='fa fa-fw fa-expand' /></button>}
+              {onCloseVideo && <button type='button' aria-label={intl.formatMessage(messages.close)} onClick={this.handleCloseVideo}><i className='fa fa-fw fa-compress' /></button>}
+              <button type='button' aria-label={intl.formatMessage(fullscreen ? messages.exit_fullscreen : messages.fullscreen)} onClick={this.toggleFullscreen}><i className={classNames('fa fa-fw', { 'fa-arrows-alt': !fullscreen, 'fa-compress': fullscreen })} /></button>
             </div>
           </div>
         </div>
diff --git a/app/javascript/styles/mastodon/about.scss b/app/javascript/styles/mastodon/about.scss
index 06a5f83d1..dc456be3e 100644
--- a/app/javascript/styles/mastodon/about.scss
+++ b/app/javascript/styles/mastodon/about.scss
@@ -1113,7 +1113,7 @@ $small-breakpoint: 960px;
         align-items: center;
         margin-left: 15px;
 
-        .fas {
+        .fa {
           display: block;
           color: $darker-text-color;
           font-size: 48px;
diff --git a/app/javascript/styles/mastodon/accounts.scss b/app/javascript/styles/mastodon/accounts.scss
index 830c64d50..06effbdb2 100644
--- a/app/javascript/styles/mastodon/accounts.scss
+++ b/app/javascript/styles/mastodon/accounts.scss
@@ -136,7 +136,7 @@
     float: left;
     padding-left: 0;
 
-    .fas {
+    .fa {
       display: inline-block;
       margin-right: 5px;
     }
@@ -146,7 +146,7 @@
     float: right;
     padding-right: 0;
 
-    .fas {
+    .fa {
       display: inline-block;
       margin-left: 5px;
     }
diff --git a/app/javascript/styles/mastodon/admin.scss b/app/javascript/styles/mastodon/admin.scss
index 1ae4aa1fe..b6c771abf 100644
--- a/app/javascript/styles/mastodon/admin.scss
+++ b/app/javascript/styles/mastodon/admin.scss
@@ -50,7 +50,7 @@ $no-columns-breakpoint: 600px;
         transition: all 200ms linear;
         border-radius: 4px 0 0 4px;
 
-        i.fas {
+        i.fa {
           margin-right: 5px;
         }
 
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index dd440d16f..90e2ed5a5 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -675,7 +675,7 @@
     &:hover {
       text-decoration: underline;
 
-      .fas {
+      .fa {
         color: lighten($dark-text-color, 7%);
       }
     }
@@ -690,7 +690,7 @@
       }
     }
 
-    .fas {
+    .fa {
       color: $dark-text-color;
     }
   }
@@ -1132,12 +1132,6 @@
     vertical-align: middle;
     margin-right: 5px;
   }
-
-  .bot-icon {
-    position: absolute;
-    bottom: -.333em;
-    left: -.333em;
-  }
 }
 
 a .account__avatar {
@@ -1355,22 +1349,10 @@ a .account__avatar {
 .account__header__avatar {
   background-size: 90px 90px;
   display: block;
-  font-size: 1.5em;
   height: 90px;
   margin: 0 auto 10px;
-  position: relative;
+  overflow: hidden;
   width: 90px;
-
-  .bot-icon {
-    color: $dark-text-color;
-    position: absolute;
-    bottom: 0;
-    left: 0;
-
-    .light & {
-      color: $inverted-text-color;
-    }
-  }
 }
 
 .account-authorize {
@@ -1496,7 +1478,7 @@ a.account__display-name {
   font-size: 15px;
   position: relative;
 
-  .fas {
+  .fa {
     color: $highlight-text-color;
   }
 
@@ -2044,7 +2026,7 @@ a.account__display-name {
   border-bottom: 2px solid lighten($ui-base-color, 8%);
   transition: all 50ms linear;
 
-  .fas {
+  .fa {
     font-weight: 400;
     font-size: 16px;
   }
@@ -3274,7 +3256,7 @@ a.status-card {
   overflow: hidden;
   display: flex;
 
-  .fas {
+  .fa {
     font-size: 34px;
     margin-right: 10px;
   }
@@ -3491,7 +3473,7 @@ a.status-card {
     outline: 0 !important;
   }
 
-  .fas {
+  .fa {
     position: absolute;
     top: 10px;
     right: 10px;
@@ -3545,7 +3527,7 @@ a.status-card {
   font-size: 16px;
   cursor: default;
 
-  .fas {
+  .fa {
     display: inline-block;
     margin-right: 5px;
   }
@@ -3564,7 +3546,7 @@ a.status-card {
     font-size: 16px;
     color: $dark-text-color;
 
-    .fas {
+    .fa {
       display: inline-block;
       margin-right: 5px;
     }
@@ -4462,7 +4444,7 @@ a.status-card {
     justify-content: center;
     font-size: 26px;
 
-    .fas {
+    .fa {
       display: block;
     }
   }
@@ -4500,7 +4482,7 @@ a.status-card {
       display: block;
     }
 
-    .fas {
+    .fa {
       color: $dark-text-color;
     }
   }
@@ -5447,7 +5429,7 @@ noscript {
     font-size: 16px;
     cursor: default;
 
-    .fas {
+    .fa {
       display: inline-block;
       margin-right: 5px;
     }
diff --git a/app/javascript/styles/mastodon/forms.scss b/app/javascript/styles/mastodon/forms.scss
index c829023ee..be2bf7cea 100644
--- a/app/javascript/styles/mastodon/forms.scss
+++ b/app/javascript/styles/mastodon/forms.scss
@@ -656,7 +656,7 @@ code {
         }
       }
 
-      .fas {
+      .fa {
         font-weight: 400;
       }
     }
diff --git a/app/javascript/styles/mastodon/rtl.scss b/app/javascript/styles/mastodon/rtl.scss
index 16d09fa41..11588d47f 100644
--- a/app/javascript/styles/mastodon/rtl.scss
+++ b/app/javascript/styles/mastodon/rtl.scss
@@ -38,7 +38,7 @@ body.rtl {
     padding-left: 30px;
   }
 
-  .search__icon .fas {
+  .search__icon .fa {
     right: auto;
     left: 10px;
   }
@@ -197,7 +197,7 @@ body.rtl {
   }
 
   .admin-wrapper .sidebar ul a i.fa,
-  a.table-action-link i.fas {
+  a.table-action-link i.fa {
     margin-right: 0;
     margin-left: 5px;
   }
@@ -264,7 +264,7 @@ body.rtl {
     left: 0;
   }
 
-  .landing-page .fa-external-link-alt {
+  .landing-page .fa-external-link {
     padding-right: 5px;
     padding-left: 0 !important;
   }
diff --git a/app/javascript/styles/mastodon/tables.scss b/app/javascript/styles/mastodon/tables.scss
index 73195ac0a..adb75afe5 100644
--- a/app/javascript/styles/mastodon/tables.scss
+++ b/app/javascript/styles/mastodon/tables.scss
@@ -112,7 +112,7 @@ a.table-action-link {
     color: $primary-text-color;
   }
 
-  i.fas {
+  i.fa {
     font-weight: 400;
     margin-right: 5px;
   }
diff --git a/app/javascript/styles/mastodon/widgets.scss b/app/javascript/styles/mastodon/widgets.scss
index 8267c3f4b..f843f0b42 100644
--- a/app/javascript/styles/mastodon/widgets.scss
+++ b/app/javascript/styles/mastodon/widgets.scss
@@ -196,7 +196,7 @@
   &__message {
     margin-bottom: 15px;
 
-    .fas {
+    .fa {
       margin-right: 5px;
       color: $darker-text-color;
     }
diff --git a/app/views/about/_links.html.haml b/app/views/about/_links.html.haml
index b392b1789..f79c37e65 100644
--- a/app/views/about/_links.html.haml
+++ b/app/views/about/_links.html.haml
@@ -13,4 +13,4 @@
     %li
       = link_to 'https://joinmastodon.org/' do
         = "#{t('about.other_instances')}"
-        %i.fa.fa-external-link-alt{ style: 'padding-left: 5px;' }
+        %i.fa.fa-external-link{ style: 'padding-left: 5px;' }
diff --git a/app/views/layouts/modal.html.haml b/app/views/layouts/modal.html.haml
index fc8b00e0d..2ef49e413 100644
--- a/app/views/layouts/modal.html.haml
+++ b/app/views/layouts/modal.html.haml
@@ -9,7 +9,7 @@
         = t 'users.signed_in_as'
         %span.username @#{current_account.local_username_and_domain}
       = link_to destroy_user_session_path(continue: true), method: :delete, class: 'logout-link icon-button' do
-        = fa_icon 'sign-out-alt'
+        = fa_icon 'sign-out'
 
   .container-alt= yield
   .modal-layout__mastodon
diff --git a/app/views/stream_entries/_status.html.haml b/app/views/stream_entries/_status.html.haml
index e5b7e695d..83887cd87 100644
--- a/app/views/stream_entries/_status.html.haml
+++ b/app/views/stream_entries/_status.html.haml
@@ -35,7 +35,7 @@
   - elsif pinned
     .status__prepend
       .status__prepend-icon-wrapper
-        %i.status__prepend-icon.fa.fa-fw.fa-thumbtack
+        %i.status__prepend-icon.fa.fa-fw.fa-thumb-tack
       %span
         = t('stream_entries.pinned')
 
diff --git a/config/navigation.rb b/config/navigation.rb
index d50bf423c..99d227f11 100644
--- a/config/navigation.rb
+++ b/config/navigation.rb
@@ -6,12 +6,12 @@ SimpleNavigation::Configuration.run do |navigation|
 
     primary.item :settings, safe_join([fa_icon('cog fw'), t('settings.settings')]), settings_profile_url do |settings|
       settings.item :profile, safe_join([fa_icon('user fw'), t('settings.edit_profile')]), settings_profile_url, highlights_on: %r{/settings/profile|/settings/migration}
-      settings.item :preferences, safe_join([fa_icon('sliders-h fw'), t('settings.preferences')]), settings_preferences_url
+      settings.item :preferences, safe_join([fa_icon('sliders fw'), t('settings.preferences')]), settings_preferences_url
       settings.item :notifications, safe_join([fa_icon('bell fw'), t('settings.notifications')]), settings_notifications_url
       settings.item :password, safe_join([fa_icon('lock fw'), t('auth.security')]), edit_user_registration_url, highlights_on: %r{/auth/edit|/settings/delete}
       settings.item :two_factor_authentication, safe_join([fa_icon('mobile fw'), t('settings.two_factor_authentication')]), settings_two_factor_authentication_url, highlights_on: %r{/settings/two_factor_authentication}
-      settings.item :import, safe_join([fa_icon('cloud-upload-alt fw'), t('settings.import')]), settings_import_url
-      settings.item :export, safe_join([fa_icon('cloud-download-alt fw'), t('settings.export')]), settings_export_url
+      settings.item :import, safe_join([fa_icon('cloud-upload fw'), t('settings.import')]), settings_import_url
+      settings.item :export, safe_join([fa_icon('cloud-download fw'), t('settings.export')]), settings_export_url
       settings.item :authorized_apps, safe_join([fa_icon('list fw'), t('settings.authorized_apps')]), oauth_authorized_applications_url
       settings.item :follower_domains, safe_join([fa_icon('users fw'), t('settings.followers')]), settings_follower_domains_url
     end
@@ -34,15 +34,15 @@ SimpleNavigation::Configuration.run do |navigation|
     end
 
     primary.item :admin, safe_join([fa_icon('cogs fw'), t('admin.title')]), admin_dashboard_url, if: proc { current_user.staff? } do |admin|
-      admin.item :dashboard, safe_join([fa_icon('tachometer-alt fw'), t('admin.dashboard.title')]), admin_dashboard_url
+      admin.item :dashboard, safe_join([fa_icon('tachometer fw'), t('admin.dashboard.title')]), admin_dashboard_url
       admin.item :settings, safe_join([fa_icon('cogs fw'), t('admin.settings.title')]), edit_admin_settings_url, if: -> { current_user.admin? }
-      admin.item :custom_emojis, safe_join([fa_icon('smile fw'), t('admin.custom_emojis.title')]), admin_custom_emojis_url, highlights_on: %r{/admin/custom_emojis}
-      admin.item :relays, safe_join([fa_icon('exchange-alt fw'), t('admin.relays.title')]), admin_relays_url, if: -> { current_user.admin? }, highlights_on: %r{/admin/relays}
-      admin.item :subscriptions, safe_join([fa_icon('paper-plane fw'), t('admin.subscriptions.title')]), admin_subscriptions_url, if: -> { current_user.admin? }
-      admin.item :sidekiq, safe_join([fa_icon('gem fw'), 'Sidekiq']), sidekiq_url, link_html: { target: 'sidekiq' }, if: -> { current_user.admin? }
+      admin.item :custom_emojis, safe_join([fa_icon('smile-o fw'), t('admin.custom_emojis.title')]), admin_custom_emojis_url, highlights_on: %r{/admin/custom_emojis}
+      admin.item :relays, safe_join([fa_icon('exchange fw'), t('admin.relays.title')]), admin_relays_url, if: -> { current_user.admin? }, highlights_on: %r{/admin/relays}
+      admin.item :subscriptions, safe_join([fa_icon('paper-plane-o fw'), t('admin.subscriptions.title')]), admin_subscriptions_url, if: -> { current_user.admin? }
+      admin.item :sidekiq, safe_join([fa_icon('diamond fw'), 'Sidekiq']), sidekiq_url, link_html: { target: 'sidekiq' }, if: -> { current_user.admin? }
       admin.item :pghero, safe_join([fa_icon('database fw'), 'PgHero']), pghero_url, link_html: { target: 'pghero' }, if: -> { current_user.admin? }
     end
 
-    primary.item :logout, safe_join([fa_icon('sign-out-alt fw'), t('auth.logout')]), destroy_user_session_url, link_html: { 'data-method' => 'delete' }
+    primary.item :logout, safe_join([fa_icon('sign-out fw'), t('auth.logout')]), destroy_user_session_url, link_html: { 'data-method' => 'delete' }
   end
 end
diff --git a/package.json b/package.json
index 155bb7e0b..8320a76fb 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,6 @@
     "@babel/preset-env": "^7.0.0",
     "@babel/preset-react": "^7.0.0",
     "@babel/runtime": "^7.0.0",
-    "@fortawesome/fontawesome-free": "^5.2.0",
     "array-includes": "^3.0.3",
     "autoprefixer": "^8.6.5",
     "axios": "~0.16.2",
@@ -59,6 +58,7 @@
     "exif-js": "^2.3.0",
     "express": "^4.16.2",
     "file-loader": "^2.0.0",
+    "font-awesome": "^4.7.0",
     "glob": "^7.1.1",
     "history": "^4.7.2",
     "http-link-header": "^0.8.0",
diff --git a/spec/helpers/application_helper_spec.rb b/spec/helpers/application_helper_spec.rb
index af231fe16..61780b46b 100644
--- a/spec/helpers/application_helper_spec.rb
+++ b/spec/helpers/application_helper_spec.rb
@@ -55,7 +55,7 @@ describe ApplicationHelper do
 
   describe 'fa_icon' do
     it 'returns a tag of fixed-width cog' do
-      expect(helper.fa_icon('cog fw')).to eq '<i class="fas fa-cog fa-fw"></i>'
+      expect(helper.fa_icon('cog fw')).to eq '<i class="fa fa-cog fa-fw"></i>'
     end
   end
 
diff --git a/yarn.lock b/yarn.lock
index adac9aa06..d2063ddea 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -647,10 +647,6 @@
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/@csstools/sass-import-resolve/-/sass-import-resolve-1.0.0.tgz#32c3cdb2f7af3cd8f0dca357b592e7271f3831b5"
 
-"@fortawesome/fontawesome-free@^5.2.0":
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/@fortawesome/fontawesome-free/-/fontawesome-free-5.2.0.tgz#50cd9856774351c56c0b1b0db4efe122d7913e58"
-
 "@types/node@*":
   version "10.9.4"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.9.4.tgz#0f4cb2dc7c1de6096055357f70179043c33e9897"
@@ -3283,6 +3279,10 @@ follow-redirects@^1.0.0, follow-redirects@^1.2.3:
   dependencies:
     debug "=3.1.0"
 
+font-awesome@^4.7.0:
+  version "4.7.0"
+  resolved "https://registry.yarnpkg.com/font-awesome/-/font-awesome-4.7.0.tgz#8fa8cf0411a1a31afd07b06d2902bb9fc815a133"
+
 for-in@^0.1.3:
   version "0.1.8"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-0.1.8.tgz#d8773908e31256109952b1fdb9b3fa867d2775e1"