diff --git a/frontend/app/@types/define-modules.d.ts b/frontend/app/@types/define-modules.d.ts
new file mode 100644
index 00000000..672a166a
--- /dev/null
+++ b/frontend/app/@types/define-modules.d.ts
@@ -0,0 +1,2 @@
+declare module 'intersection-observer';
+declare module 'whatwg-fetch';
diff --git a/frontend/app/@types/global.d.ts b/frontend/app/@types/global.d.ts
new file mode 100644
index 00000000..d891e2b8
--- /dev/null
+++ b/frontend/app/@types/global.d.ts
@@ -0,0 +1,11 @@
+import { Theme } from '@app/common/types';
+import { CommentsConfig } from '@app/common/config-types';
+
+declare global {
+  interface Window {
+    remark_config: CommentsConfig;
+    REMARK42: {
+      changeTheme(theme: Theme): void;
+    };
+  }
+}
diff --git a/frontend/app/common/api.ts b/frontend/app/common/api.ts
index 96c89812..bd81e389 100644
--- a/frontend/app/common/api.ts
+++ b/frontend/app/common/api.ts
@@ -292,31 +292,3 @@ export const emailConfirmationForSubscribe = (token: string) =>
  * Decline current subscription to updates
  */
 export const unsubscribeFromEmailUpdates = () => fetcher.delete({ url: `/email`, withCredentials: true });
-
-export default {
-  logIn,
-  logOut,
-  getConfig,
-  getPostComments,
-  getCommentsCount,
-  getComment,
-  getUserComments,
-  putCommentVote,
-  addComment,
-  updateComment,
-  removeMyComment,
-  getUser,
-  getPreview,
-
-  pinComment,
-  unpinComment,
-  setVerifyStatus: setVerifiedStatus,
-  removeVerifyStatus: removeVerifiedStatus,
-  removeComment,
-  blockUser,
-  unblockUser,
-  getBlocked,
-  disableComments,
-  enableComments,
-  uploadImage,
-};
diff --git a/frontend/app/common/constants.config.ts b/frontend/app/common/constants.config.ts
index c2b42f95..6bdbac53 100644
--- a/frontend/app/common/constants.config.ts
+++ b/frontend/app/common/constants.config.ts
@@ -1,7 +1,5 @@
-export const BASE_URL: string =
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  ((window as any).remark_config && (window as any).remark_config.host) || process.env.REMARK_URL!;
-export const NODE_ID: string = process.env.REMARK_NODE!;
+export const BASE_URL = (window.remark_config && window.remark_config.host) || process.env.REMARK_URL!;
+export const NODE_ID = process.env.REMARK_NODE!;
 export const API_BASE = '/api/v1';
 export const COMMENT_NODE_CLASSNAME_PREFIX = 'remark42__comment-';
 export const COUNTER_NODE_CLASSNAME = 'remark42__counter';
diff --git a/frontend/app/common/constants.ts b/frontend/app/common/constants.ts
index 4fd2de13..6f97da88 100644
--- a/frontend/app/common/constants.ts
+++ b/frontend/app/common/constants.ts
@@ -1,10 +1,6 @@
 import { Sorting, AuthProvider, Theme } from './types';
-import * as configConstant from './constants.config';
 
-export const BASE_URL = configConstant.BASE_URL;
-export const API_BASE = configConstant.API_BASE;
-export const NODE_ID = configConstant.NODE_ID;
-export const COMMENT_NODE_CLASSNAME_PREFIX = configConstant.COMMENT_NODE_CLASSNAME_PREFIX;
+export { BASE_URL, API_BASE, NODE_ID, COMMENT_NODE_CLASSNAME_PREFIX } from './constants.config';
 export const LAST_COMMENTS_NODE_CLASSNAME = 'remark42__last-comments';
 export const MAX_SHOWN_ROOT_COMMENTS = 10;
 
@@ -28,8 +24,8 @@ export const LS_COLLAPSE_KEY = '__remarkCollapsed';
 /** locastorage key for hidden users */
 export const LS_HIDDEN_USERS_KEY = '__remarkHiddenUsers';
 
-/** cookie key under which sort preference resides */
-export const COOKIE_SORT_KEY = 'remarkSort';
+/** localstorage key under which sort preference resides */
+export const LS_SORT_KEY = '__remarkSort';
 
 export const THEMES: Theme[] = ['light', 'dark'];
 
diff --git a/frontend/app/common/polyfills.ts b/frontend/app/common/polyfills.ts
index 1d8cea5c..f48f9c7c 100644
--- a/frontend/app/common/polyfills.ts
+++ b/frontend/app/common/polyfills.ts
@@ -5,27 +5,27 @@ import '@webcomponents/custom-elements';
 import './closest-polyfill';
 
 export default async function loadPolyfills() {
-  const fillCoreJs = async () => {
+  function fillCoreJs() {
     if (
       'startsWith' in String.prototype &&
       'endsWith' in String.prototype &&
       'includes' in Array.prototype &&
       'assign' in Object &&
       'keys' in Object
-    )
+    ) {
       return;
+    }
 
-    await import(/* webpackChunkName: "core-js" */ 'core-js').then();
-    return;
-  };
+    return import(/* webpackChunkName: "core-js" */ 'core-js');
+  }
 
-  const fillFetch = async () => {
+  function fillFetch() {
     if ('fetch' in window) return;
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    await import(/* webpackChunkName: "whatwg-fetch" */ 'whatwg-fetch' as any).then();
-  };
 
-  const fillIntersectionObserver = async () => {
+    return import(/* webpackChunkName: "whatwg-fetch" */ 'whatwg-fetch');
+  }
+
+  function fillIntersectionObserver() {
     if (
       'IntersectionObserver' in window &&
       'IntersectionObserverEntry' in window &&
@@ -34,9 +34,8 @@ export default async function loadPolyfills() {
       return;
     }
 
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    await import(/* webpackChunkName: "intersection-observer" */ 'intersection-observer' as any).then();
-  };
+    return import(/* webpackChunkName: "intersection-observer" */ 'intersection-observer');
+  }
 
   await Promise.all([fillCoreJs(), fillFetch(), fillIntersectionObserver()]);
   return;
diff --git a/frontend/app/common/settings.ts b/frontend/app/common/settings.ts
index 0816faf1..339211bf 100644
--- a/frontend/app/common/settings.ts
+++ b/frontend/app/common/settings.ts
@@ -1,5 +1,6 @@
 import { Theme } from './types';
 import { THEMES, MAX_SHOWN_ROOT_COMMENTS } from './constants';
+import parseQuery from '@app/utils/parseQuery';
 
 export interface QuerySettingsType {
   site_id?: string;
@@ -11,15 +12,7 @@ export interface QuerySettingsType {
   token?: string;
 }
 
-export const querySettings: Partial<QuerySettingsType> =
-  window.location.search
-    .substr(1)
-    .split('&')
-    .reduce<{ [key: string]: string }>((acc, param) => {
-      const pair = param.split('=');
-      acc[pair[0]] = decodeURIComponent(pair[1]);
-      return acc;
-    }, {}) || {};
+export const querySettings: Partial<QuerySettingsType> = parseQuery();
 
 if (querySettings.max_shown_comments) {
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
diff --git a/frontend/app/common/user-info-settings.ts b/frontend/app/common/user-info-settings.ts
index fd33dfd4..5fee1f02 100644
--- a/frontend/app/common/user-info-settings.ts
+++ b/frontend/app/common/user-info-settings.ts
@@ -1,23 +1,10 @@
 import { UserInfo } from './types';
+import parseQuery from '@app/utils/parseQuery';
 
-export const userInfo: Partial<UserInfo> =
-  window.location.search
-    .substr(1)
-    .split('&')
-    .reduce<{ [key: string]: string }>((acc, param) => {
-      const pair = param.split('=');
-      acc[pair[0]] = decodeURIComponent(pair[1]);
-      return acc;
-    }, {}) || {};
+export const userInfo: Partial<UserInfo> = parseQuery();
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
-if (((userInfo.isDefaultPicture as any) as string) !== '1') {
-  userInfo.isDefaultPicture = false;
-} else {
-  userInfo.isDefaultPicture = true;
-}
-
+export const isDefaultPicture = ((userInfo.isDefaultPicture as any) as string) !== '1';
 export const id = userInfo.id;
 export const name = userInfo.name;
-export const isDefaultPicture = userInfo.isDefaultPicture;
 export const picture = userInfo.picture;
diff --git a/frontend/app/components/auth-panel/auth-panel.tsx b/frontend/app/components/auth-panel/auth-panel.tsx
index 4a4a1e02..1c1029ff 100644
--- a/frontend/app/components/auth-panel/auth-panel.tsx
+++ b/frontend/app/components/auth-panel/auth-panel.tsx
@@ -32,8 +32,7 @@ interface PropsWithoutIntl {
   onSortChange(s: Sorting): Promise<void>;
   onSignIn(p: AuthProvider): Promise<User | null>;
   onSignOut(): Promise<void>;
-  onCommentsEnable(): Promise<boolean>;
-  onCommentsDisable(): Promise<boolean>;
+  onCommentsChangeReadOnlyMode(readOnly: boolean): Promise<void>;
   onBlockedUsersShow(): void;
   onBlockedUsersHide(): void;
 }
@@ -76,7 +75,6 @@ export class AuthPanel extends Component<Props, State> {
     };
 
     this.toggleBlockedVisibility = this.toggleBlockedVisibility.bind(this);
-    this.toggleCommentsAvailability = this.toggleCommentsAvailability.bind(this);
     this.onSortChange = this.onSortChange.bind(this);
     this.onSignIn = this.onSignIn.bind(this);
     this.onEmailSignIn = this.onEmailSignIn.bind(this);
@@ -108,9 +106,7 @@ export class AuthPanel extends Component<Props, State> {
   }
 
   onSortChange(e: Event) {
-    if (this.props.onSortChange) {
-      this.props.onSortChange((e.target! as HTMLOptionElement).value as Sorting);
-    }
+    this.props.onSortChange((e.target! as HTMLOptionElement).value as Sorting);
   }
 
   onSortFocus = () => {
@@ -131,13 +127,9 @@ export class AuthPanel extends Component<Props, State> {
     this.setState({ isBlockedVisible: !this.state.isBlockedVisible });
   }
 
-  toggleCommentsAvailability() {
-    if (this.props.isCommentsDisabled) {
-      this.props.onCommentsEnable && this.props.onCommentsEnable();
-    } else {
-      this.props.onCommentsDisable && this.props.onCommentsDisable();
-    }
-  }
+  toggleCommentsAvailability = () => {
+    this.props.onCommentsChangeReadOnlyMode(!this.props.isCommentsDisabled);
+  };
 
   toggleUserInfoVisibility() {
     const user = this.props.user;
@@ -368,7 +360,7 @@ export class AuthPanel extends Component<Props, State> {
       <Button
         kind="link"
         mix="auth-panel__admin-action"
-        {...getHandleClickProps(() => this.toggleCommentsAvailability())}
+        {...getHandleClickProps(this.toggleCommentsAvailability)}
         role="link"
       >
         {isCommentsDisabled ? (
@@ -384,6 +376,7 @@ export class AuthPanel extends Component<Props, State> {
     const { sort } = this.props;
     const { sortSelectFocused } = this.state;
     const sortArray = getSortArray(sort, this.props.intl);
+
     return (
       <span className="auth-panel__sort">
         <FormattedMessage id="commentSort.sort-by" defaultMessage="Sort by" />{' '}
diff --git a/frontend/app/components/comment/comment.tsx b/frontend/app/components/comment/comment.tsx
index a207074e..9f978e4a 100644
--- a/frontend/app/components/comment/comment.tsx
+++ b/frontend/app/components/comment/comment.tsx
@@ -252,7 +252,7 @@ class Comment extends Component<Props, State> {
       : intl.formatMessage(messages.unverifyUser, { userName });
 
     if (confirm(promptMessage)) {
-      this.props.setVerifyStatus!(userId, value);
+      this.props.setVerifiedStatus!(userId, value);
     }
   };
 
diff --git a/frontend/app/components/comment/connected-comment.tsx b/frontend/app/components/comment/connected-comment.tsx
index 6ff516b3..4772e0f3 100644
--- a/frontend/app/components/comment/connected-comment.tsx
+++ b/frontend/app/components/comment/connected-comment.tsx
@@ -69,7 +69,7 @@ export const boundActions = bindActions({
   blockUser,
   unblockUser,
   hideUser,
-  setVerifyStatus: setVerifiedStatus,
+  setVerifiedStatus,
 });
 
 export const ConnectedComment: FunctionComponent<Omit<Props, keyof (ProvidedProps & typeof bindActions)>> = props => {
diff --git a/frontend/app/components/root/root.tsx b/frontend/app/components/root/root.tsx
index d44bc208..9eecf627 100644
--- a/frontend/app/components/root/root.tsx
+++ b/frontend/app/components/root/root.tsx
@@ -1,16 +1,17 @@
 /** @jsx createElement */
-import { createElement, Component, FunctionComponent } from 'preact';
+import { createElement, Component, FunctionComponent, Fragment } from 'preact';
 import { useSelector } from 'react-redux';
 import b from 'bem-react-helper';
 import { IntlShape, useIntl, FormattedMessage, defineMessages } from 'react-intl';
 
 import { User, Sorting, AuthProvider } from '@app/common/types';
 import {
-  NODE_ID,
   COMMENT_NODE_CLASSNAME_PREFIX,
   MAX_SHOWN_ROOT_COMMENTS,
   THEMES,
   IS_MOBILE,
+  LS_SORT_KEY,
+  DEFAULT_SORT,
 } from '@app/common/constants';
 import { maxShownComments } from '@app/common/settings';
 
@@ -23,14 +24,12 @@ import {
   blockUser,
   unblockUser,
   fetchBlockedUsers,
-  setSettingsVisibility,
   hideUser,
   unhideUser,
 } from '@app/store/user/actions';
 import { fetchComments } from '@app/store/comments/actions';
 import { setCommentsReadOnlyState } from '@app/store/post_info/actions';
 import { setTheme } from '@app/store/theme/actions';
-import { setSort } from '@app/store/sort/actions';
 import { addComment, updateComment } from '@app/store/comments/actions';
 
 import { AuthPanel } from '@app/components/auth-panel';
@@ -45,11 +44,10 @@ import { isUserAnonymous } from '@app/utils/isUserAnonymous';
 import { bindActions } from '@app/utils/actionBinder';
 import postMessage from '@app/utils/postMessage';
 import { useActions } from '@app/hooks/useAction';
+import * as localStorage from '@app/common/local-storage';
 
 const mapStateToProps = (state: StoreState) => ({
   user: state.user,
-  sort: state.sort,
-  isSettingsVisible: state.isSettingsVisible,
   topComments: state.topComments,
   pinnedComments: state.pinnedComments.map(id => state.comments[id]).filter(c => !c.hidden),
   provider: state.provider,
@@ -65,13 +63,10 @@ const boundActions = bindActions({
   fetchComments,
   fetchUser,
   fetchBlockedUsers,
-  setSettingsVisibility,
   logIn,
   logOut: logout,
   setTheme,
-  enableComments: () => setCommentsReadOnlyState(false),
-  disableComments: () => setCommentsReadOnlyState(true),
-  changeSort: setSort,
+  setCommentsReadOnlyState,
   blockUser,
   unblockUser,
   hideUser,
@@ -83,8 +78,10 @@ const boundActions = bindActions({
 type Props = ReturnType<typeof mapStateToProps> & typeof boundActions & { intl: IntlShape };
 
 interface State {
-  isLoaded: boolean;
+  sort: string;
+  isUserLoading: boolean;
   isCommentsListLoading: boolean;
+  isSettingsVisible: boolean;
   commentsShown: number;
   wasSomeoneUnblocked: boolean;
 }
@@ -96,30 +93,33 @@ const messages = defineMessages({
   },
 });
 
-/** main component fr main comments widget */
-export class Root extends Component<Props, State> {
-  constructor(props: Props) {
-    super(props);
+function getInitialSort() {
+  const sort = localStorage.getItem(LS_SORT_KEY) as Sorting;
 
-    this.state = {
-      isLoaded: false,
-      isCommentsListLoading: false,
-      commentsShown: maxShownComments,
-      wasSomeoneUnblocked: false,
-    };
-
-    this.onBlockedUsersShow = this.onBlockedUsersShow.bind(this);
-    this.onBlockedUsersHide = this.onBlockedUsersHide.bind(this);
-    this.onUnblockSomeone = this.onUnblockSomeone.bind(this);
-    this.showMore = this.showMore.bind(this);
+  if (sort) {
+    return sort;
   }
 
-  async componentWillMount() {
-    Promise.all([this.props.fetchUser(), this.props.fetchComments(this.props.sort)]).finally(() => {
-      this.setState({
-        isLoaded: true,
-      });
+  return DEFAULT_SORT;
+}
 
+/** main component fr main comments widget */
+export class Root extends Component<Props, State> {
+  state = {
+    sort: getInitialSort(),
+    isUserLoading: true,
+    isCommentsListLoading: true,
+    commentsShown: maxShownComments,
+    wasSomeoneUnblocked: false,
+    isSettingsVisible: false,
+  };
+
+  componentWillMount() {
+    const userloading = this.props.fetchUser().finally(() => this.setState({ isUserLoading: false }));
+
+    Promise.all([userloading, this.fetchComments()]).finally(() => {
+      postMessage({ remarkIframeHeight: document.body.offsetHeight });
+      this.setState({ isCommentsListLoading: false });
       setTimeout(this.checkUrlHash);
       window.addEventListener('hashchange', this.checkUrlHash);
     });
@@ -127,22 +127,38 @@ export class Root extends Component<Props, State> {
     window.addEventListener('message', this.onMessage.bind(this));
   }
 
-  logIn = async (p: AuthProvider): Promise<User | null> => {
-    const user = await this.props.logIn(p);
-    await this.props.fetchComments(this.props.sort);
+  fetchComments() {
+    return this.props.fetchComments(this.state.sort);
+  }
+
+  changeSort = async (sort: Sorting) => {
+    if (sort === this.state.sort) return;
+    const prevSort = this.state.sort;
+
+    this.setState({ isCommentsListLoading: true, sort });
+    try {
+      await this.fetchComments();
+      localStorage.setItem(LS_SORT_KEY, sort);
+      this.setState({ isCommentsListLoading: false });
+    } catch (e) {
+      this.setState({ sort: prevSort, isCommentsListLoading: false });
+    }
+  };
+
+  logIn = async (provider: AuthProvider): Promise<User | null> => {
+    const user = await this.props.logIn(provider);
+
+    await this.fetchComments();
+
     return user;
   };
 
   logOut = async (): Promise<void> => {
     await this.props.logOut();
-    await this.props.fetchComments(this.props.sort);
+    await this.fetchComments();
   };
 
-  checkUrlHash(
-    e: Event & {
-      newURL?: string;
-    }
-  ) {
+  checkUrlHash(e: Event & { newURL?: string }) {
     const hash = e ? `#${e.newURL!.split('#')[1]}` : window.location.hash;
 
     if (hash.indexOf(`#${COMMENT_NODE_CLASSNAME_PREFIX}`) === 0) {
@@ -169,40 +185,33 @@ export class Root extends Component<Props, State> {
     }
   }
 
-  async onBlockedUsersShow() {
+  onBlockedUsersShow = async () => {
     if (this.props.user && this.props.user.admin) {
       await this.props.fetchBlockedUsers();
     }
-    this.props.setSettingsVisibility(true);
-  }
+    this.setState({ isSettingsVisible: true });
+  };
 
-  async onBlockedUsersHide() {
+  onBlockedUsersHide = async () => {
     // if someone was unblocked let's reload comments
     if (this.state.wasSomeoneUnblocked) {
-      this.props.fetchComments(this.props.sort);
+      this.fetchComments();
     }
-    this.props.setSettingsVisibility(false);
     this.setState({
       wasSomeoneUnblocked: false,
+      isSettingsVisible: false,
     });
-  }
+  };
 
-  async changeSort(sort: Sorting) {
-    if (sort === this.props.sort) return;
-    this.setState({ isCommentsListLoading: true });
-    await this.props.changeSort(sort).catch(() => {});
-    this.setState({ isCommentsListLoading: false });
-  }
-
-  onUnblockSomeone() {
+  onUnblockSomeone = () => {
     this.setState({ wasSomeoneUnblocked: true });
-  }
+  };
 
-  showMore() {
+  showMore = () => {
     this.setState({
       commentsShown: this.state.commentsShown + MAX_SHOWN_ROOT_COMMENTS,
     });
-  }
+  };
 
   /**
    * Defines whether current client is logged in via `Anonymous provider`
@@ -211,44 +220,48 @@ export class Root extends Component<Props, State> {
     return isUserAnonymous(this.props.user);
   }
 
-  render(props: Props, { isLoaded, isCommentsListLoading, commentsShown }: State) {
-    if (!isLoaded) {
-      return (
-        <div id={NODE_ID}>
-          <div className={b('root', {}, { theme: props.theme })}>
-            <Preloader mix="root__preloader" />
-          </div>
-        </div>
-      );
+  render(props: Props, { isUserLoading, isCommentsListLoading, commentsShown, isSettingsVisible }: State) {
+    if (isUserLoading) {
+      return <Preloader mix="root__preloader" />;
     }
 
     const isGuest = !props.user;
-    const isCommentsDisabled = !!props.info.read_only;
+    const isCommentsDisabled = props.info.read_only!;
     const imageUploadHandler = this.isAnonymous() ? undefined : this.props.uploadImage;
 
     return (
-      <div id={NODE_ID}>
-        <div className={b('root', {}, { theme: props.theme })}>
-          <AuthPanel
-            theme={this.props.theme}
-            user={this.props.user}
-            hiddenUsers={this.props.hiddenUsers}
-            sort={this.props.sort}
-            isCommentsDisabled={isCommentsDisabled}
-            postInfo={this.props.info}
-            providers={StaticStore.config.auth_providers}
-            provider={this.props.provider}
-            onSignIn={this.logIn}
-            onSignOut={this.logOut}
-            onBlockedUsersShow={this.onBlockedUsersShow}
-            onBlockedUsersHide={this.onBlockedUsersHide}
-            onCommentsEnable={this.props.enableComments}
-            onCommentsDisable={this.props.disableComments}
-            onSortChange={this.props.changeSort}
-          />
-
-          {!this.props.isSettingsVisible && (
-            <div className="root__main">
+      <Fragment>
+        <AuthPanel
+          theme={this.props.theme}
+          user={this.props.user}
+          hiddenUsers={this.props.hiddenUsers}
+          sort={this.state.sort}
+          isCommentsDisabled={isCommentsDisabled}
+          postInfo={this.props.info}
+          providers={StaticStore.config.auth_providers}
+          provider={this.props.provider}
+          onSignIn={this.logIn}
+          onSignOut={this.logOut}
+          onBlockedUsersShow={this.onBlockedUsersShow}
+          onBlockedUsersHide={this.onBlockedUsersHide}
+          onCommentsChangeReadOnlyMode={this.props.setCommentsReadOnlyState}
+          onSortChange={this.changeSort}
+        />
+        <div className="root__main">
+          {isSettingsVisible ? (
+            <Settings
+              intl={this.props.intl}
+              user={this.props.user}
+              hiddenUsers={this.props.hiddenUsers}
+              blockedUsers={this.props.blockedUsers}
+              blockUser={this.props.blockUser}
+              unblockUser={this.props.unblockUser}
+              hideUser={this.props.hideUser}
+              unhideUser={this.props.unhideUser}
+              onUnblockSomeone={this.onUnblockSomeone}
+            />
+          ) : (
+            <Fragment>
               {!isGuest && !isCommentsDisabled && (
                 <CommentForm
                   intl={this.props.intl}
@@ -312,40 +325,10 @@ export class Root extends Component<Props, State> {
                   <Preloader mix="root__preloader" />
                 </div>
               )}
-            </div>
+            </Fragment>
           )}
-
-          {this.props.isSettingsVisible && (
-            <div className="root__main">
-              <Settings
-                intl={this.props.intl}
-                user={this.props.user}
-                hiddenUsers={this.props.hiddenUsers}
-                blockedUsers={this.props.blockedUsers}
-                blockUser={this.props.blockUser}
-                unblockUser={this.props.unblockUser}
-                hideUser={this.props.hideUser}
-                unhideUser={this.props.unhideUser}
-                onUnblockSomeone={this.onUnblockSomeone}
-              />
-            </div>
-          )}
-
-          <p className="root__copyright" role="contentinfo">
-            <FormattedMessage
-              id="root.powered-by"
-              defaultMessage="Powered by <a>Remark42</a>"
-              values={{
-                a: (title: string) => (
-                  <a class="root__copyright-link" href="https://remark42.com/">
-                    {title}
-                  </a>
-                ),
-              }}
-            />
-          </p>
         </div>
-      </div>
+      </Fragment>
     );
   }
 }
@@ -355,5 +338,23 @@ export const ConnectedRoot: FunctionComponent = () => {
   const props = useSelector(mapStateToProps);
   const actions = useActions(boundActions);
   const intl = useIntl();
-  return <Root {...props} {...actions} intl={intl} />;
+
+  return (
+    <div className={b('root', {}, { theme: props.theme })}>
+      <Root {...props} {...actions} intl={intl} />
+      <p className="root__copyright" role="contentinfo">
+        <FormattedMessage
+          id="root.powered-by"
+          defaultMessage="Powered by <a>Remark42</a>"
+          values={{
+            a: (title: string) => (
+              <a class="root__copyright-link" href="https://remark42.com/">
+                {title}
+              </a>
+            ),
+          }}
+        />
+      </p>
+    </div>
+  );
 };
diff --git a/frontend/app/embed.ts b/frontend/app/embed.ts
index 73c3ec64..38520290 100644
--- a/frontend/app/embed.ts
+++ b/frontend/app/embed.ts
@@ -1,11 +1,6 @@
-/* eslint-disable no-console, @typescript-eslint/no-explicit-any */
-declare let remark_config: CommentsConfig;
-
+/* eslint-disable no-console */
 import { BASE_URL, NODE_ID, COMMENT_NODE_CLASSNAME_PREFIX } from '@app/common/constants.config';
 import { UserInfo, Theme } from '@app/common/types';
-import { CommentsConfig } from '@app/common/config-types';
-
-const HOST = remark_config.host || BASE_URL;
 
 if (document.readyState === 'loading') {
   document.addEventListener('DOMContentLoaded', init);
@@ -28,7 +23,7 @@ function createFrame({
   host: string;
   query: string;
   height?: string;
-  __colors__?: any;
+  __colors__?: any; // eslint-disable-line @typescript-eslint/no-explicit-any
 }) {
   const iframe = document.createElement('iframe');
   iframe.src = `${host}/web/iframe.html?${query}`;
@@ -51,8 +46,8 @@ function createFrame({
   return iframe;
 }
 
-function init(): void {
-  const node = document.getElementById(remark_config.node || NODE_ID);
+function init() {
+  const node = document.getElementById(window.remark_config.node || NODE_ID);
 
   if (!node) {
     console.error("Remark42: Can't find root node.");
@@ -60,29 +55,33 @@ function init(): void {
   }
 
   try {
-    remark_config = remark_config || {};
+    window.remark_config = window.remark_config || {};
   } catch (e) {
     console.error('Remark42: Config object is undefined.');
     return;
   }
 
-  if (!remark_config.site_id) {
+  if (!window.remark_config.site_id) {
     console.error('Remark42: Site ID is undefined.');
     return;
   }
 
-  remark_config.url = (remark_config.url || window.location.origin + window.location.pathname).split('#')[0];
+  window.remark_config.url = (window.remark_config.url || window.location.origin + window.location.pathname).split(
+    '#'
+  )[0];
 
-  (window as any).REMARK42 = (window as any).REMARK42 || {};
-  (window as any).REMARK42.changeTheme = changeTheme;
+  window.REMARK42 = window.REMARK42 || {};
+  window.REMARK42.changeTheme = changeTheme;
 
-  const query = Object.keys(remark_config)
-    .filter((key: any) => key !== `__colors__`)
-    .map((key: any) => {
-      return `${encodeURIComponent(key)}=${encodeURIComponent((remark_config as any)[key])}`;
+  const query = Object.keys(window.remark_config)
+    .filter(key => key !== '__colors__')
+    .map(key => {
+      return `${encodeURIComponent(key)}=${encodeURIComponent(
+        window.remark_config[key as keyof typeof window.remark_config]
+      )}`;
     })
     .join('&');
-  const iframe = createFrame({ host: HOST, query, __colors__: remark_config.__colors__ });
+  const iframe = createFrame({ host: BASE_URL, query, __colors__: window.remark_config.__colors__ });
 
   node.appendChild(iframe);
 
@@ -195,7 +194,7 @@ function init(): void {
         query +
         '&page=user-info&' +
         `&id=${user.id}&name=${user.name}&picture=${user.picture || ''}&isDefaultPicture=${user.isDefaultPicture || 0}`;
-      const iframe = createFrame({ host: HOST, query: queryUserInfo, height: '100%' });
+      const iframe = createFrame({ host: BASE_URL, query: queryUserInfo, height: '100%' });
       this.node.appendChild(iframe);
       this.iframe = iframe;
       this.node.appendChild(this.closeEl);
@@ -284,11 +283,7 @@ function init(): void {
     } catch (e) {}
   }
 
-  function postHashToIframe(
-    e?: Event & {
-      newURL: string;
-    }
-  ): void {
+  function postHashToIframe(e?: Event & { newURL: string }) {
     const hash = e ? `#${e.newURL.split('#')[1]}` : window.location.hash;
 
     if (hash.indexOf(`#${COMMENT_NODE_CLASSNAME_PREFIX}`) === 0) {
@@ -298,17 +293,17 @@ function init(): void {
     }
   }
 
-  function postTitleToIframe(title: string): void {
+  function postTitleToIframe(title: string) {
     iframe.contentWindow!.postMessage(JSON.stringify({ title }), '*');
   }
 
-  function postClickOutsideToIframe(e: MouseEvent): void {
+  function postClickOutsideToIframe(e: MouseEvent) {
     if (!iframe.contains(e.target as Node)) {
       iframe.contentWindow!.postMessage(JSON.stringify({ clickOutside: true }), '*');
     }
   }
 
-  function changeTheme(theme: Theme): void {
+  function changeTheme(theme: Theme) {
     iframe.contentWindow!.postMessage(JSON.stringify({ theme }), '*');
   }
 }
diff --git a/frontend/app/remark.tsx b/frontend/app/remark.tsx
index 0e32d9fc..562c0e79 100644
--- a/frontend/app/remark.tsx
+++ b/frontend/app/remark.tsx
@@ -24,10 +24,11 @@ import '@app/components/list-comments';
 
 import { NODE_ID, BASE_URL } from '@app/common/constants';
 import { StaticStore } from '@app/common/static_store';
-import api from '@app/common/api';
+import { getConfig } from '@app/common/api';
 import { fetchHiddenUsers } from './store/user/actions';
 import { restoreProvider } from './store/provider/actions';
 import { restoreCollapsedThreads } from './store/thread/actions';
+import parseQuery from './utils/parseQuery';
 
 if (document.readyState === 'loading') {
   document.addEventListener('DOMContentLoaded', init);
@@ -55,29 +56,18 @@ async function init(): Promise<void> {
   boundActions.restoreProvider();
   boundActions.restoreCollapsedThreads();
 
-  const params = window.location.search
-    .replace(/^\?/, '')
-    .split('&')
-    .reduce<{ [key: string]: string }>((memo, value) => {
-      const vals = value.split('=');
-      if (vals.length === 2) {
-        memo[vals[0]] = vals[1];
-      }
-      return memo;
-    }, {});
+  const params = parseQuery();
   const locale = getLocale(params);
   const messages = await loadLocale(locale).catch(() => ({}));
-  StaticStore.config = await api.getConfig();
+  StaticStore.config = await getConfig();
 
   if (params.page === 'user-info') {
     return render(
       <IntlProvider locale={locale} messages={messages}>
-        <div id={NODE_ID}>
-          <div className="root root_user-info">
-            <Provider store={reduxStore}>
-              <UserInfo />
-            </Provider>
-          </div>
+        <div className="root root_user-info">
+          <Provider store={reduxStore}>
+            <UserInfo />
+          </Provider>
         </div>
       </IntlProvider>,
       node
diff --git a/frontend/app/store/actions.ts b/frontend/app/store/actions.ts
index dbfcfdd9..04614243 100644
--- a/frontend/app/store/actions.ts
+++ b/frontend/app/store/actions.ts
@@ -1,6 +1,5 @@
 import { COMMENTS_ACTIONS } from './comments/types';
 import { POST_INFO_ACTIONS } from './post_info/types';
-import { SORT_ACTIONS } from './sort/types';
 import { THEME_ACTIONS } from './theme/types';
 import { THREAD_ACTIONS } from './thread/types';
 import { USER_ACTIONS } from './user/types';
@@ -11,7 +10,6 @@ import { PROVIDER_ACTIONS } from './provider/types';
 export type ACTIONS =
   | COMMENTS_ACTIONS
   | POST_INFO_ACTIONS
-  | SORT_ACTIONS
   | THEME_ACTIONS
   | THREAD_ACTIONS
   | USER_ACTIONS
diff --git a/frontend/app/store/comments/actions.ts b/frontend/app/store/comments/actions.ts
index 09d853de..9e773213 100644
--- a/frontend/app/store/comments/actions.ts
+++ b/frontend/app/store/comments/actions.ts
@@ -1,10 +1,10 @@
-import api from '@app/common/api';
-import { Tree, Comment, Sorting, CommentMode, Node } from '@app/common/types';
+import * as api from '@app/common/api';
+import { Tree, Comment, CommentMode, Node, Sorting } from '@app/common/types';
 
 import { StoreAction, StoreState } from '../index';
-import { POST_INFO_SET } from '../post_info/types';
+import { setPostInfo } from '../post_info/actions';
 import { filterTree } from './utils';
-import { COMMENTS_SET, COMMENT_MODE_SET, COMMENTS_APPEND, COMMENTS_EDIT } from './types';
+import { COMMENTS_SET, COMMENT_MODE_SET, COMMENTS_APPEND, COMMENTS_EDIT, COMMENT_MODE_SET_ACTION } from './types';
 
 /** sets comments, and put pinned comments in cache */
 export const setComments = (comments: Node[]): StoreAction<void> => dispatch => {
@@ -68,15 +68,17 @@ export const removeComment = (id: Comment['id']): StoreAction<Promise<void>> =>
 
 /** fetches comments from server */
 export const fetchComments = (sort: Sorting): StoreAction<Promise<Tree>> => async (dispatch, getState) => {
+  const { hiddenUsers } = getState();
+  const hiddenUsersIds = Object.keys(hiddenUsers);
   const data = await api.getPostComments(sort);
-  const hiddenUsersIds = Object.keys(getState().hiddenUsers);
-  if (hiddenUsersIds.length > 0)
+
+  if (hiddenUsersIds.length > 0) {
     data.comments = filterTree(data.comments, node => hiddenUsersIds.indexOf(node.comment.user.id) === -1);
+  }
+
   dispatch(setComments(data.comments));
-  dispatch({
-    type: POST_INFO_SET,
-    info: data.info,
-  });
+  dispatch(setPostInfo(data.info));
+
   return data;
 };
 
@@ -85,16 +87,13 @@ export const setCommentMode = (mode: StoreState['activeComment']): StoreAction<v
   if (mode !== null && mode.state === CommentMode.None) {
     mode = null;
   }
-  dispatch({
-    type: COMMENT_MODE_SET,
-    mode,
-  });
+  dispatch(unsetCommentMode(mode));
 };
 
 /** unsets comment mode */
-export const unsetCommentMode = (): StoreAction<void> => dispatch => {
-  dispatch({
+export function unsetCommentMode(mode: StoreState['activeComment'] = null) {
+  return {
     type: COMMENT_MODE_SET,
-    mode: null,
-  });
-};
+    mode,
+  } as COMMENT_MODE_SET_ACTION;
+}
diff --git a/frontend/app/store/comments/getters.ts b/frontend/app/store/comments/getters.ts
index ffa15fab..41bc7d76 100644
--- a/frontend/app/store/comments/getters.ts
+++ b/frontend/app/store/comments/getters.ts
@@ -2,11 +2,9 @@ import { Comment, CommentMode } from '@app/common/types';
 import { StoreState } from '../index';
 
 export const getCommentMode = (id: Comment['id']) => (state: StoreState): CommentMode => {
-  if (state.activeComment === null) {
-    return CommentMode.None;
-  }
-  if (state.activeComment.id !== id) {
+  if (state.activeComment === null || state.activeComment.id !== id) {
     return CommentMode.None;
   }
+
   return state.activeComment.state;
 };
diff --git a/frontend/app/store/post_info/actions.ts b/frontend/app/store/post_info/actions.ts
index d9b4c6c8..63fbecdc 100644
--- a/frontend/app/store/post_info/actions.ts
+++ b/frontend/app/store/post_info/actions.ts
@@ -1,40 +1,24 @@
 import { PostInfo } from '@app/common/types';
 
 import { StoreAction } from '../index';
-import { POST_INFO_SET } from './types';
-import api from '@app/common/api';
+import { POST_INFO_SET, POST_INFO_SET_ACTION } from './types';
+import { disableComments, enableComments } from '@app/common/api';
 import { unsetCommentMode } from '../comments/actions';
 
-export const setPostInfo = (info: PostInfo): StoreAction<void> => dispatch =>
-  dispatch({
+export function setPostInfo(info: PostInfo) {
+  return {
     type: POST_INFO_SET,
     info,
-  });
+  } as POST_INFO_SET_ACTION;
+}
 
 /** set state of post: readonly or not */
-export const setCommentsReadOnlyState = (state: boolean): StoreAction<Promise<boolean>> => async (
-  dispatch,
-  getState
-) => {
-  await (!state ? api.enableComments() : api.disableComments());
-  const storeState = getState();
-  dispatch(unsetCommentMode());
-  dispatch({
-    type: POST_INFO_SET,
-    info: { ...storeState.info, read_only: state },
-  });
-  return state;
-};
+export function setCommentsReadOnlyState(read_only: boolean): StoreAction<Promise<void>> {
+  return async (dispatch, getState) => {
+    const { info } = getState();
 
-/** toggles state of post: readonly or not */
-export const toggleCommentsReadOnlyState = (): StoreAction<Promise<boolean>> => async (dispatch, getState) => {
-  const storeState = getState();
-  const state = !storeState.info.read_only!;
-  await (state ? api.enableComments() : api.disableComments());
-  dispatch(unsetCommentMode());
-  dispatch({
-    type: POST_INFO_SET,
-    info: { ...storeState.info, read_only: !state },
-  });
-  return !state;
-};
+    await (read_only ? disableComments() : enableComments());
+    dispatch(unsetCommentMode());
+    dispatch(setPostInfo({ ...info, read_only }));
+  };
+}
diff --git a/frontend/app/store/post_info/types.ts b/frontend/app/store/post_info/types.ts
index f039951d..4026b07e 100644
--- a/frontend/app/store/post_info/types.ts
+++ b/frontend/app/store/post_info/types.ts
@@ -7,11 +7,4 @@ export interface POST_INFO_SET_ACTION {
   info: PostInfo;
 }
 
-export const POST_INFO_SET_READONLY = 'COMMENTS/SET_READONLY';
-
-export interface POST_INFO_SET_READONLY_ACTION {
-  type: typeof POST_INFO_SET_READONLY;
-  readonly: boolean;
-}
-
-export type POST_INFO_ACTIONS = POST_INFO_SET_ACTION | POST_INFO_SET_READONLY_ACTION;
+export type POST_INFO_ACTIONS = POST_INFO_SET_ACTION;
diff --git a/frontend/app/store/reducers.ts b/frontend/app/store/reducers.ts
index a3e2f2a6..12f079bd 100644
--- a/frontend/app/store/reducers.ts
+++ b/frontend/app/store/reducers.ts
@@ -1,6 +1,5 @@
 import comments from './comments/reducers';
 import postinfo from './post_info/reducers';
-import sort from './sort/reducers';
 import theme from './theme/reducers';
 import user from './user/reducers';
 import userInfo from './user-info/reducers';
@@ -11,7 +10,6 @@ import provider from './provider/reducers';
 export default {
   ...comments,
   ...postinfo,
-  ...sort,
   ...theme,
   ...user,
   ...userInfo,
diff --git a/frontend/app/store/sort/actions.ts b/frontend/app/store/sort/actions.ts
deleted file mode 100644
index ec4c4d8e..00000000
--- a/frontend/app/store/sort/actions.ts
+++ /dev/null
@@ -1,40 +0,0 @@
-import { Sorting } from '@app/common/types';
-import { COOKIE_SORT_KEY } from '@app/common/constants';
-import { setCookie } from '@app/common/cookies';
-
-import { StoreAction } from '../index';
-import { fetchComments } from '../comments/actions';
-import { SORT_SET, SORT_SET_ACTION } from './types';
-
-function setSortCookie(sort: Sorting) {
-  try {
-    setCookie(COOKIE_SORT_KEY, sort, { expires: 60 * 60 * 24 * 365, path: '/' }); // save sorting for a year
-  } catch {
-    // can't save; ignore it
-  }
-}
-
-export const setSort = (sort: Sorting): StoreAction<Promise<void>> => async (dispatch, getState) => {
-  const originalSort = getState().sort;
-  setSortCookie(sort);
-
-  try {
-    const action: SORT_SET_ACTION = {
-      type: SORT_SET,
-      sort,
-    };
-
-    await dispatch(action);
-    await dispatch(fetchComments(sort));
-  } catch {
-    // restore sort in case of error, probably network error
-
-    const action: SORT_SET_ACTION = {
-      type: SORT_SET,
-      sort: originalSort,
-    };
-
-    setSortCookie(originalSort);
-    await dispatch(action);
-  }
-};
diff --git a/frontend/app/store/sort/reducers.ts b/frontend/app/store/sort/reducers.ts
deleted file mode 100644
index 6438ab98..00000000
--- a/frontend/app/store/sort/reducers.ts
+++ /dev/null
@@ -1,25 +0,0 @@
-import { Sorting } from '@app/common/types';
-import { COOKIE_SORT_KEY, DEFAULT_SORT } from '@app/common/constants';
-import { getCookie } from '@app/common/cookies';
-
-import { SORT_SET, SORT_SET_ACTION } from './types';
-
-const getDefaultSort = (): Sorting => {
-  try {
-    return (getCookie(COOKIE_SORT_KEY) as Sorting) || DEFAULT_SORT;
-  } catch (e) {
-    return DEFAULT_SORT;
-  }
-};
-
-export const sort = (state: Sorting = getDefaultSort(), action: SORT_SET_ACTION): Sorting => {
-  switch (action.type) {
-    case SORT_SET: {
-      return action.sort;
-    }
-    default:
-      return state;
-  }
-};
-
-export default { sort };
diff --git a/frontend/app/store/sort/types.ts b/frontend/app/store/sort/types.ts
deleted file mode 100644
index b65c4ac6..00000000
--- a/frontend/app/store/sort/types.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-import { Sorting } from '@app/common/types';
-
-export const SORT_SET = 'SORT/SET';
-
-export interface SORT_SET_ACTION {
-  type: typeof SORT_SET;
-  sort: Sorting;
-}
-
-export type SORT_ACTIONS = SORT_SET_ACTION;
diff --git a/frontend/app/store/user-info/actions.ts b/frontend/app/store/user-info/actions.ts
index 06224b10..bff497e6 100644
--- a/frontend/app/store/user-info/actions.ts
+++ b/frontend/app/store/user-info/actions.ts
@@ -1,27 +1,16 @@
-import api from '@app/common/api';
-import { Comment, User } from '@app/common/types';
+import { getUserComments } from '@app/common/api';
+import { Comment } from '@app/common/types';
 import { userInfo } from '@app/common/user-info-settings';
 
 import { StoreAction } from '../index';
 import { USER_INFO_SET } from './types';
 
-export const getUserComments = (userId: User['id']): StoreAction<Comment[] | null> => (_dispatch, getState) =>
-  getState().userComments![userId] || null;
-
-export const getComments = (id: User['id']): StoreAction<Comment[] | null> => (_dispatch, getState) => {
-  const comments = getState().userComments![id];
-  if (comments) {
-    return comments;
-  }
-  return null;
-};
-
 export const fetchInfo = (): StoreAction<Promise<Comment[] | null>> => async dispatch => {
   if (!userInfo.id) {
     return null;
   }
   // TODO: limit
-  const info = await api.getUserComments(userInfo.id, 10);
+  const info = await getUserComments(userInfo.id, 10);
   dispatch({
     type: USER_INFO_SET,
     id: userInfo.id,
diff --git a/frontend/app/store/user/actions.ts b/frontend/app/store/user/actions.ts
index 1033e21d..3280ff02 100644
--- a/frontend/app/store/user/actions.ts
+++ b/frontend/app/store/user/actions.ts
@@ -1,4 +1,4 @@
-import api from '@app/common/api';
+import * as api from '@app/common/api';
 import { User, BlockedUser, AuthProvider, BlockTTL } from '@app/common/types';
 import { ttlToTime } from '@app/utils/ttl-to-time';
 
@@ -12,7 +12,7 @@ import {
   USER_HIDE,
   USER_UNHIDE,
   USER_SUBSCRIPTION_SET,
-  SETTINGS_VISIBLE_SET,
+  USER_SET_ACTION,
 } from './types';
 import { unsetCommentMode } from '../comments/actions';
 import { IS_STORAGE_AVAILABLE, LS_HIDDEN_USERS_KEY } from '@app/common/constants';
@@ -20,32 +20,32 @@ import { getItem } from '@app/common/local-storage';
 import { updateProvider } from '../provider/actions';
 import { COMMENTS_PATCH } from '../comments/types';
 
-export const fetchUser = (): StoreAction<Promise<User | null>> => async dispatch => {
-  const user = await api.getUser();
-  dispatch({
+function setUser(user: User | null = null) {
+  return {
     type: USER_SET,
     user,
-  });
+  } as USER_SET_ACTION;
+}
+
+export const fetchUser = (): StoreAction<Promise<User | null>> => async dispatch => {
+  const user = await api.getUser();
+  dispatch(setUser(user));
   return user;
 };
 
 export const logIn = (provider: AuthProvider): StoreAction<Promise<User | null>> => async dispatch => {
   const user = await api.logIn(provider);
+
   dispatch(updateProvider({ name: provider.name }));
-  dispatch({
-    type: USER_SET,
-    user,
-  });
+  dispatch(setUser(user));
+
   return user;
 };
 
 export const logout = (): StoreAction<Promise<void>> => async dispatch => {
   await api.logOut();
   dispatch(unsetCommentMode());
-  dispatch({
-    type: USER_SET,
-    user: null,
-  });
+  dispatch(setUser());
 };
 
 export const fetchBlockedUsers = (): StoreAction<Promise<BlockedUser[]>> => async dispatch => {
@@ -134,9 +134,9 @@ export const setVerifiedStatus = (id: User['id'], status: boolean): StoreAction<
   getState
 ) => {
   if (status) {
-    await api.setVerifyStatus(id);
+    await api.setVerifiedStatus(id);
   } else {
-    await api.removeVerifyStatus(id);
+    await api.removeVerifiedStatus(id);
   }
   const comments = Object.values(getState().comments).filter(c => c.user.id === id);
   if (!comments.length) return;
@@ -149,14 +149,6 @@ export const setVerifiedStatus = (id: User['id'], status: boolean): StoreAction<
   });
 };
 
-export const setSettingsVisibility = (state: boolean): StoreAction<boolean> => dispatch => {
-  dispatch({
-    type: SETTINGS_VISIBLE_SET,
-    state,
-  });
-  return state;
-};
-
 export const setUserSubscribed = (isSubscribed: boolean) => ({
   type: USER_SUBSCRIPTION_SET,
   payload: isSubscribed,
diff --git a/frontend/app/store/user/reducers.test.ts b/frontend/app/store/user/reducers.test.ts
index 55bac54e..de754bbe 100644
--- a/frontend/app/store/user/reducers.test.ts
+++ b/frontend/app/store/user/reducers.test.ts
@@ -1,4 +1,4 @@
-import api from '@app/common/api';
+import * as api from '@app/common/api';
 import { User } from '@app/common/types';
 
 import { fetchUser, logIn, logout } from './actions';
diff --git a/frontend/app/store/user/reducers.ts b/frontend/app/store/user/reducers.ts
index cc98e7bb..37cc48eb 100644
--- a/frontend/app/store/user/reducers.ts
+++ b/frontend/app/store/user/reducers.ts
@@ -5,8 +5,6 @@ import {
   USER_BAN,
   USER_UNBAN,
   USER_ACTIONS,
-  SETTINGS_VISIBLE_SET_ACTION,
-  SETTINGS_VISIBLE_SET,
   USER_BANLIST_SET,
   USER_HIDELIST_SET,
   USER_HIDE,
@@ -76,14 +74,4 @@ export const hiddenUsers = (state: { [id: string]: User } = {}, action: USER_ACT
   }
 };
 
-export const isSettingsVisible = (state: boolean = false, action: SETTINGS_VISIBLE_SET_ACTION): boolean => {
-  switch (action.type) {
-    case SETTINGS_VISIBLE_SET: {
-      return action.state;
-    }
-    default:
-      return state;
-  }
-};
-
-export default { user, bannedUsers, hiddenUsers, isSettingsVisible };
+export default { user, bannedUsers, hiddenUsers };
diff --git a/frontend/app/store/user/types.ts b/frontend/app/store/user/types.ts
index 537b0cad..405075b7 100644
--- a/frontend/app/store/user/types.ts
+++ b/frontend/app/store/user/types.ts
@@ -49,13 +49,6 @@ export interface USER_UNHIDE_ACTION {
   id: User['id'];
 }
 
-export const SETTINGS_VISIBLE_SET = 'SETTINGS_VISIBLE/SET';
-
-export interface SETTINGS_VISIBLE_SET_ACTION {
-  type: typeof SETTINGS_VISIBLE_SET;
-  state: boolean;
-}
-
 export const USER_SUBSCRIPTION_SET = 'USER_SUBSCRIPTION/SET';
 
 export interface USER_SUBSCRIPTION_SET_ACTION {
@@ -71,5 +64,4 @@ export type USER_ACTIONS =
   | USER_HIDELIST_SET_ACTION
   | USER_HIDE_ACTION
   | USER_UNHIDE_ACTION
-  | SETTINGS_VISIBLE_SET_ACTION
   | USER_SUBSCRIPTION_SET_ACTION;
diff --git a/frontend/app/utils/parseQuery.test.ts b/frontend/app/utils/parseQuery.test.ts
new file mode 100644
index 00000000..15fbfc6a
--- /dev/null
+++ b/frontend/app/utils/parseQuery.test.ts
@@ -0,0 +1,24 @@
+import parseQuery from './parseQuery';
+
+describe('parseQuery', () => {
+  it('should return empty object', () => {
+    expect(parseQuery('')).toEqual({});
+    expect(parseQuery('?')).toEqual({});
+  });
+
+  it('should add empty field to object', () => {
+    expect(parseQuery('?a')).toEqual({ a: '' });
+  });
+
+  it('should add empty field and field with param to object', () => {
+    expect(parseQuery('?a&b=1')).toEqual({ a: '', b: '1' });
+  });
+
+  it('should add all params to object', () => {
+    expect(parseQuery('?a=1&b=1')).toEqual({ a: '1', b: '1' });
+  });
+
+  it('should convert urlencoded param', () => {
+    expect(parseQuery('?x=%D1%8B%D1%84%D0%B2%D0%B0%D1%84%D1%8B%D0%B2%D1%84%D1%8B')).toEqual({ x: 'ыфвафывфы' });
+  });
+});
diff --git a/frontend/app/utils/parseQuery.ts b/frontend/app/utils/parseQuery.ts
index 8f83ba53..5c800f95 100644
--- a/frontend/app/utils/parseQuery.ts
+++ b/frontend/app/utils/parseQuery.ts
@@ -1,20 +1,16 @@
 /** converts widnow.location.search into object */
-export function parseQuery(search: string): { [key: string]: string } {
+export default function parseQuery(search: string = window.location.search) {
   if (search.length < 2) return {};
+
   return search
     .substr(1)
     .split('&')
-    .map((chunk): [string, string] => {
-      const parts = chunk.split('=');
-      if (parts.length < 2) {
-        parts[1] = '';
-      } else {
-        parts[1] = decodeURIComponent(parts[1]);
-      }
-      return parts as [string, string];
-    })
-    .reduce<{ [key: string]: string }>((c, x) => {
-      c[x[0]] = x[1];
-      return c;
-    }, {});
+    .reduce((accum, param) => {
+      const [key, value] = param.split('=');
+
+      return {
+        ...accum,
+        [key]: value ? decodeURIComponent(value) : '',
+      };
+    }, {} as Record<string, string>);
 }
diff --git a/frontend/app/utils/postMessage.ts b/frontend/app/utils/postMessage.ts
index 6cdf7160..7b7c04b1 100644
--- a/frontend/app/utils/postMessage.ts
+++ b/frontend/app/utils/postMessage.ts
@@ -7,7 +7,8 @@ export type Message =
       user: User;
     }
   | { isUserInfoShown: false }
-  | { scrollTo: number };
+  | { scrollTo: number }
+  | { remarkIframeHeight: number };
 
 /**
  * Sends message to parent window
diff --git a/frontend/privacy.html b/frontend/privacy.html
index a27435d7..3bec482f 100644
--- a/frontend/privacy.html
+++ b/frontend/privacy.html
@@ -1,6 +1,7 @@
 <html>
-<title>Privacy Policy</title>
-
+<head>
+    <title>Privacy Policy</title>
+</head>
 <body>
     <h1>Privacy Policy</h1>
     <p>
@@ -39,10 +40,12 @@
     <h3>Service Providers</h3>
     <p>
         We may employ third-party companies and individuals due to the following reasons:
-        <li>To facilitate our Service</li>
-        <li>To provide the Service on our behalf</li>
-        <li>To perform Service-related services</li>
-        <li>To assist us in analyzing how our Service is used</li>
+        <ul>
+            <li>To facilitate our Service</li>
+            <li>To provide the Service on our behalf</li>
+            <li>To perform Service-related services</li>
+            <li>To assist us in analyzing how our Service is used</li>
+        </ul>
     </p>
 
     <p>
@@ -85,4 +88,4 @@
     <p>If you have any questions or suggestions about our Privacy Policy, do not hesitate to contact us.</p>
 </body>
 
-</html>
\ No newline at end of file
+</html>