diff --git a/src/components/Article/AudioPlayer/PlayerHeader.tsx b/src/components/Article/AudioPlayer/PlayerHeader.tsx
index 11d430e1..3894af1f 100644
--- a/src/components/Article/AudioPlayer/PlayerHeader.tsx
+++ b/src/components/Article/AudioPlayer/PlayerHeader.tsx
@@ -1,7 +1,7 @@
 import { clsx } from 'clsx'
 import { Show, createSignal } from 'solid-js'
 import { Icon } from '~/components/_shared/Icon'
-import { useOutsideClickHandler } from '~/utils/useOutsideClickHandler'
+import { useOutsideClickHandler } from '~/lib/useOutsideClickHandler'
 
 import { MediaItem } from '~/types/mediaitem'
 import styles from './AudioPlayer.module.scss'
diff --git a/src/components/Article/CommentsTree.tsx b/src/components/Article/CommentsTree.tsx
index 7aeb71bf..8546e4ba 100644
--- a/src/components/Article/CommentsTree.tsx
+++ b/src/components/Article/CommentsTree.tsx
@@ -5,7 +5,7 @@ import { useLocalize } from '~/context/localize'
 import { useReactions } from '~/context/reactions'
 import { useSession } from '~/context/session'
 import { Author, Reaction, ReactionKind, ReactionSort } from '~/graphql/schema/core.gen'
-import { byCreated, byStat } from '~/lib/sortby'
+import { byCreated, byStat } from '~/lib/sortBy'
 import { Button } from '../_shared/Button'
 import { ShowIfAuthenticated } from '../_shared/ShowIfAuthenticated'
 
diff --git a/src/components/Author/AuthorBadge/AuthorBadge.tsx b/src/components/Author/AuthorBadge/AuthorBadge.tsx
index 4388e992..51ffcf82 100644
--- a/src/components/Author/AuthorBadge/AuthorBadge.tsx
+++ b/src/components/Author/AuthorBadge/AuthorBadge.tsx
@@ -13,7 +13,7 @@ import { useSession } from '~/context/session'
 import { Author, FollowingEntity } from '~/graphql/schema/core.gen'
 import { isCyrillic } from '~/intl/translate'
 import { translit } from '~/intl/translit'
-import { mediaMatches } from '~/utils/media-query'
+import { mediaMatches } from '~/lib/mediaQuery'
 import { Userpic } from '../Userpic'
 import styles from './AuthorBadge.module.scss'
 
diff --git a/src/components/Editor/AudioUploader/AudioUploader.tsx b/src/components/Editor/AudioUploader/AudioUploader.tsx
index c5e0e4f1..0e9c46e2 100644
--- a/src/components/Editor/AudioUploader/AudioUploader.tsx
+++ b/src/components/Editor/AudioUploader/AudioUploader.tsx
@@ -3,8 +3,8 @@ import { Show } from 'solid-js'
 import { isServer } from 'solid-js/web'
 import { DropArea } from '~/components/_shared/DropArea'
 import { useLocalize } from '~/context/localize'
+import { composeMediaItems } from '~/lib/composeMediaItems'
 import { MediaItem } from '~/types/mediaitem'
-import { composeMediaItems } from '~/utils/composeMediaItems'
 import { AudioPlayer } from '../../Article/AudioPlayer'
 import styles from './AudioUploader.module.scss'
 
diff --git a/src/components/Editor/EditorFloatingMenu/EditorFloatingMenu.tsx b/src/components/Editor/EditorFloatingMenu/EditorFloatingMenu.tsx
index 72dd43e5..a86bd1ef 100644
--- a/src/components/Editor/EditorFloatingMenu/EditorFloatingMenu.tsx
+++ b/src/components/Editor/EditorFloatingMenu/EditorFloatingMenu.tsx
@@ -5,8 +5,8 @@ import { renderUploadedImage } from '~/components/Editor/renderUploadedImage'
 import { Icon } from '~/components/_shared/Icon'
 import { useLocalize } from '~/context/localize'
 import { useUI } from '~/context/ui'
+import { useOutsideClickHandler } from '~/lib/useOutsideClickHandler'
 import { UploadedFile } from '~/types/upload'
-import { useOutsideClickHandler } from '~/utils/useOutsideClickHandler'
 import { Modal } from '../../Nav/Modal'
 import { InlineForm } from '../InlineForm'
 import { UploadModalContent } from '../UploadModalContent'
diff --git a/src/components/Editor/InsertLinkForm/InsertLinkForm.tsx b/src/components/Editor/InsertLinkForm/InsertLinkForm.tsx
index b409b6dd..96b6472c 100644
--- a/src/components/Editor/InsertLinkForm/InsertLinkForm.tsx
+++ b/src/components/Editor/InsertLinkForm/InsertLinkForm.tsx
@@ -2,7 +2,7 @@ import { Editor } from '@tiptap/core'
 import { createEditorTransaction } from 'solid-tiptap'
 
 import { useLocalize } from '~/context/localize'
-import { validateUrl } from '~/utils/validateUrl'
+import { validateUrl } from '~/utils/validate'
 import { InlineForm } from '../InlineForm'
 
 type Props = {
diff --git a/src/components/Editor/Panel/Panel.tsx b/src/components/Editor/Panel/Panel.tsx
index ca6d60ec..6427487a 100644
--- a/src/components/Editor/Panel/Panel.tsx
+++ b/src/components/Editor/Panel/Panel.tsx
@@ -9,8 +9,8 @@ import { Icon } from '~/components/_shared/Icon'
 import { useEditorContext } from '~/context/editor'
 import { useLocalize } from '~/context/localize'
 import { useUI } from '~/context/ui'
-import { useEscKeyDownHandler } from '~/utils/useEscKeyDownHandler'
-import { useOutsideClickHandler } from '~/utils/useOutsideClickHandler'
+import { useEscKeyDownHandler } from '~/lib/useEscKeyDownHandler'
+import { useOutsideClickHandler } from '~/lib/useOutsideClickHandler'
 import styles from './Panel.module.scss'
 
 const typograf = new Typograf({ locale: ['ru', 'en-US'] })
diff --git a/src/components/Editor/UploadModalContent/UploadModalContent.tsx b/src/components/Editor/UploadModalContent/UploadModalContent.tsx
index e6ff8f01..31ddc7fe 100644
--- a/src/components/Editor/UploadModalContent/UploadModalContent.tsx
+++ b/src/components/Editor/UploadModalContent/UploadModalContent.tsx
@@ -10,7 +10,6 @@ import { useSession } from '~/context/session'
 import { useUI } from '~/context/ui'
 import { handleImageUpload } from '~/lib/handleImageUpload'
 import { UploadedFile } from '~/types/upload'
-import { verifyImg } from '~/utils/verifyImg'
 import { InlineForm } from '../InlineForm'
 
 import styles from './UploadModalContent.module.scss'
@@ -19,6 +18,9 @@ type Props = {
   onClose: (image?: UploadedFile) => void
 }
 
+const verify = (url: string) =>
+  fetch(url, { method: 'HEAD' }).then((res) => res.headers.get('Content-Type')?.startsWith('image'))
+
 export const UploadModalContent = (props: Props) => {
   const { t } = useLocalize()
   const { hideModal } = useUI()
@@ -87,7 +89,7 @@ export const UploadModalContent = (props: Props) => {
   }
 
   const handleValidate = async (value: string) => {
-    const validationResult = await verifyImg(value)
+    const validationResult = await verify(value)
     if (!validationResult) {
       return t('Invalid image URL')
     }
diff --git a/src/components/Editor/VideoUploader/VideoUploader.tsx b/src/components/Editor/VideoUploader/VideoUploader.tsx
index 1413c0c4..6f4c9a69 100644
--- a/src/components/Editor/VideoUploader/VideoUploader.tsx
+++ b/src/components/Editor/VideoUploader/VideoUploader.tsx
@@ -5,8 +5,8 @@ import { For, Show, createSignal } from 'solid-js'
 import { VideoPlayer } from '~/components/_shared/VideoPlayer'
 import { useLocalize } from '~/context/localize'
 import { useSnackbar } from '~/context/ui'
-import { composeMediaItems } from '~/utils/composeMediaItems'
-import { validateUrl } from '~/utils/validateUrl'
+import { composeMediaItems } from '~/lib/composeMediaItems'
+import { validateUrl } from '~/utils/validate'
 
 import { MediaItem } from '~/types/mediaitem'
 import styles from './VideoUploader.module.scss'
diff --git a/src/components/Nav/AuthModal/LoginForm.tsx b/src/components/Nav/AuthModal/LoginForm.tsx
index b6cff004..7c6efc10 100644
--- a/src/components/Nav/AuthModal/LoginForm.tsx
+++ b/src/components/Nav/AuthModal/LoginForm.tsx
@@ -4,7 +4,7 @@ import { JSX, Show, createSignal } from 'solid-js'
 import { useLocalize } from '~/context/localize'
 import { useSession } from '~/context/session'
 import { useSnackbar, useUI } from '~/context/ui'
-import { validateEmail } from '~/utils/validateEmail'
+import { validateEmail } from '~/utils/validate'
 
 import { AuthModalHeader } from './AuthModalHeader'
 import { PasswordField } from './PasswordField'
diff --git a/src/components/Nav/AuthModal/RegisterForm.tsx b/src/components/Nav/AuthModal/RegisterForm.tsx
index a326d335..00ae273b 100644
--- a/src/components/Nav/AuthModal/RegisterForm.tsx
+++ b/src/components/Nav/AuthModal/RegisterForm.tsx
@@ -6,7 +6,7 @@ import { useSearchParams } from '@solidjs/router'
 import { useLocalize } from '~/context/localize'
 import { useSession } from '~/context/session'
 import { useUI } from '~/context/ui'
-import { validateEmail } from '~/utils/validateEmail'
+import { validateEmail } from '~/utils/validate'
 import { AuthModalHeader } from './AuthModalHeader'
 import { PasswordField } from './PasswordField'
 import { SocialProviders } from './SocialProviders'
diff --git a/src/components/Nav/AuthModal/SendResetLinkForm.tsx b/src/components/Nav/AuthModal/SendResetLinkForm.tsx
index 076bcb1d..f7ef038b 100644
--- a/src/components/Nav/AuthModal/SendResetLinkForm.tsx
+++ b/src/components/Nav/AuthModal/SendResetLinkForm.tsx
@@ -3,7 +3,7 @@ import { JSX, Show, createSignal, onMount } from 'solid-js'
 
 import { useLocalize } from '~/context/localize'
 import { useSession } from '~/context/session'
-import { validateEmail } from '~/utils/validateEmail'
+import { validateEmail } from '~/utils/validate'
 import { email, setEmail } from './sharedLogic'
 
 import { useSearchParams } from '@solidjs/router'
diff --git a/src/components/Nav/AuthModal/index.tsx b/src/components/Nav/AuthModal/index.tsx
index 13cee4ea..b0b118c1 100644
--- a/src/components/Nav/AuthModal/index.tsx
+++ b/src/components/Nav/AuthModal/index.tsx
@@ -4,7 +4,7 @@ import { Dynamic } from 'solid-js/web'
 
 import { useLocalize } from '~/context/localize'
 import { AuthModalSource, useUI } from '~/context/ui'
-import { isMobile } from '~/utils/media-query'
+import { isMobile } from '~/lib/mediaQuery'
 import { ChangePasswordForm } from './ChangePasswordForm'
 import { EmailConfirm } from './EmailConfirm'
 import { LoginForm } from './LoginForm'
diff --git a/src/components/Nav/Modal/Modal.tsx b/src/components/Nav/Modal/Modal.tsx
index 73319dba..666d5cfd 100644
--- a/src/components/Nav/Modal/Modal.tsx
+++ b/src/components/Nav/Modal/Modal.tsx
@@ -4,8 +4,8 @@ import type { JSX } from 'solid-js'
 import { Show } from 'solid-js'
 import { Icon } from '~/components/_shared/Icon'
 import { useUI } from '~/context/ui'
-import { isPortrait } from '~/utils/media-query'
-import { useEscKeyDownHandler } from '~/utils/useEscKeyDownHandler'
+import { isPortrait } from '~/lib/mediaQuery'
+import { useEscKeyDownHandler } from '~/lib/useEscKeyDownHandler'
 import styles from './Modal.module.scss'
 
 interface Props {
diff --git a/src/components/Nav/SearchModal/SearchModal.tsx b/src/components/Nav/SearchModal/SearchModal.tsx
index 40a30726..2c815076 100644
--- a/src/components/Nav/SearchModal/SearchModal.tsx
+++ b/src/components/Nav/SearchModal/SearchModal.tsx
@@ -7,7 +7,7 @@ import { Button } from '~/components/_shared/Button'
 import { Icon } from '~/components/_shared/Icon'
 import { useFeed } from '~/context/feed'
 import { useLocalize } from '~/context/localize'
-import { byScore } from '~/lib/sortby'
+import { byScore } from '~/lib/sortBy'
 import { restoreScrollPosition, saveScrollPosition } from '~/utils/scroll'
 import { FEED_PAGE_SIZE } from '../../Views/Feed/Feed'
 
diff --git a/src/components/NotificationsPanel/NotificationsPanel.tsx b/src/components/NotificationsPanel/NotificationsPanel.tsx
index 7409dd2d..fcdd1dff 100644
--- a/src/components/NotificationsPanel/NotificationsPanel.tsx
+++ b/src/components/NotificationsPanel/NotificationsPanel.tsx
@@ -5,8 +5,8 @@ import { throttle } from 'throttle-debounce'
 import { useLocalize } from '~/context/localize'
 import { PAGE_SIZE, useNotifications } from '~/context/notifications'
 import { useSession } from '~/context/session'
-import { useEscKeyDownHandler } from '~/utils/useEscKeyDownHandler'
-import { useOutsideClickHandler } from '~/utils/useOutsideClickHandler'
+import { useEscKeyDownHandler } from '~/lib/useEscKeyDownHandler'
+import { useOutsideClickHandler } from '~/lib/useOutsideClickHandler'
 import { Button } from '../_shared/Button'
 import { Icon } from '../_shared/Icon'
 
diff --git a/src/components/TableOfContents/TableOfContents.tsx b/src/components/TableOfContents/TableOfContents.tsx
index 0373e715..8fb7617a 100644
--- a/src/components/TableOfContents/TableOfContents.tsx
+++ b/src/components/TableOfContents/TableOfContents.tsx
@@ -4,7 +4,7 @@ import { debounce, throttle } from 'throttle-debounce'
 
 import { useLocalize } from '~/context/localize'
 import { DEFAULT_HEADER_OFFSET } from '~/context/ui'
-import { isDesktop } from '~/utils/media-query'
+import { isDesktop } from '~/lib/mediaQuery'
 import { Icon } from '../_shared/Icon'
 
 import styles from './TableOfContents.module.scss'
diff --git a/src/components/Topic/TopicBadge/TopicBadge.tsx b/src/components/Topic/TopicBadge/TopicBadge.tsx
index 3811d284..5a70e406 100644
--- a/src/components/Topic/TopicBadge/TopicBadge.tsx
+++ b/src/components/Topic/TopicBadge/TopicBadge.tsx
@@ -7,8 +7,8 @@ import { useLocalize } from '~/context/localize'
 import { useSession } from '~/context/session'
 import { FollowingEntity, Topic } from '~/graphql/schema/core.gen'
 import { getImageUrl } from '~/lib/getImageUrl'
+import { mediaMatches } from '~/lib/mediaQuery'
 import { capitalize } from '~/utils/capitalize'
-import { mediaMatches } from '~/utils/media-query'
 import styles from './TopicBadge.module.scss'
 
 type Props = {
diff --git a/src/components/Views/AllAuthors/AllAuthors.tsx b/src/components/Views/AllAuthors/AllAuthors.tsx
index bb2d736c..6ac67afe 100644
--- a/src/components/Views/AllAuthors/AllAuthors.tsx
+++ b/src/components/Views/AllAuthors/AllAuthors.tsx
@@ -11,7 +11,7 @@ import { useLocalize } from '~/context/localize'
 import type { Author } from '~/graphql/schema/core.gen'
 import { authorLetterReduce, translateAuthor } from '~/intl/translate'
 import { dummyFilter } from '~/lib/dummyFilter'
-import { byFirstChar, byStat } from '~/lib/sortby'
+import { byFirstChar, byStat } from '~/lib/sortBy'
 import { scrollHandler } from '~/utils/scroll'
 import styles from './AllAuthors.module.scss'
 import stylesAuthorList from './AuthorsList.module.scss'
diff --git a/src/components/Views/Author/Author.tsx b/src/components/Views/Author/Author.tsx
index f270dc39..e9c6aecf 100644
--- a/src/components/Views/Author/Author.tsx
+++ b/src/components/Views/Author/Author.tsx
@@ -13,9 +13,9 @@ import loadShoutsQuery from '~/graphql/query/core/articles-load-by'
 import getAuthorFollowersQuery from '~/graphql/query/core/author-followers'
 import getAuthorFollowsQuery from '~/graphql/query/core/author-follows'
 import type { Author, Reaction, Shout, Topic } from '~/graphql/schema/core.gen'
-import { byCreated } from '~/lib/sortby'
+import { byCreated } from '~/lib/sortBy'
+import { paginate } from '~/utils/paginate'
 import { restoreScrollPosition, saveScrollPosition } from '~/utils/scroll'
-import { splitToPages } from '~/utils/splitToPages'
 import stylesArticle from '../../Article/Article.module.scss'
 import { Comment } from '../../Article/Comment'
 import { AuthorCard } from '../../Author/AuthorCard'
@@ -59,7 +59,7 @@ export const AuthorView = (props: AuthorViewProps) => {
   // derivatives
   const me = createMemo<Author>(() => session()?.user?.app_data?.profile as Author)
   const pages = createMemo<Shout[][]>(() =>
-    splitToPages(sortedFeed(), PRERENDERED_ARTICLES_COUNT, LOAD_MORE_PAGE_SIZE)
+    paginate(sortedFeed(), PRERENDERED_ARTICLES_COUNT, LOAD_MORE_PAGE_SIZE)
   )
 
   // fx
diff --git a/src/components/Views/EditView/EditSettingsView.tsx b/src/components/Views/EditView/EditSettingsView.tsx
index 7a557bed..52ea6494 100644
--- a/src/components/Views/EditView/EditSettingsView.tsx
+++ b/src/components/Views/EditView/EditSettingsView.tsx
@@ -10,8 +10,8 @@ import { useGraphQL } from '~/context/graphql'
 import { useLocalize } from '~/context/localize'
 import getMyShoutQuery from '~/graphql/query/core/article-my'
 import type { Shout, Topic } from '~/graphql/schema/core.gen'
+import { isDesktop } from '~/lib/mediaQuery'
 import { clone } from '~/utils/clone'
-import { isDesktop } from '~/utils/media-query'
 import { Panel } from '../../Editor'
 import { AutoSaveNotice } from '../../Editor/AutoSaveNotice'
 import { Modal } from '../../Nav/Modal'
diff --git a/src/components/Views/EditView/EditView.tsx b/src/components/Views/EditView/EditView.tsx
index 07bdc909..7858d51c 100644
--- a/src/components/Views/EditView/EditView.tsx
+++ b/src/components/Views/EditView/EditView.tsx
@@ -26,10 +26,10 @@ import getMyShoutQuery from '~/graphql/query/core/article-my'
 import type { Shout, Topic } from '~/graphql/schema/core.gen'
 import { slugify } from '~/intl/translit'
 import { getImageUrl } from '~/lib/getImageUrl'
+import { isDesktop } from '~/lib/mediaQuery'
 import { LayoutType } from '~/types/common'
 import { MediaItem } from '~/types/mediaitem'
 import { clone } from '~/utils/clone'
-import { isDesktop } from '~/utils/media-query'
 import { Editor, Panel } from '../../Editor'
 import { AudioUploader } from '../../Editor/AudioUploader'
 import { AutoSaveNotice } from '../../Editor/AutoSaveNotice'
diff --git a/src/components/Views/Expo/Expo.tsx b/src/components/Views/Expo/Expo.tsx
index 3924cbd7..745b8a63 100644
--- a/src/components/Views/Expo/Expo.tsx
+++ b/src/components/Views/Expo/Expo.tsx
@@ -12,7 +12,7 @@ import getShoutsQuery from '~/graphql/query/core/articles-load-by'
 import getRandomTopShoutsQuery from '~/graphql/query/core/articles-load-random-top'
 import { LoadShoutsFilters, LoadShoutsOptions, Shout } from '~/graphql/schema/core.gen'
 import { LayoutType } from '~/types/common'
-import { getUnixtime } from '~/utils/getServerDate'
+import { getUnixtime } from '~/utils/date'
 import { restoreScrollPosition, saveScrollPosition } from '~/utils/scroll'
 import { ArticleCard } from '../../Feed/ArticleCard'
 import styles from './Expo.module.scss'
diff --git a/src/components/Views/Feed/Feed.tsx b/src/components/Views/Feed/Feed.tsx
index 9b0046dd..1cc0ca38 100644
--- a/src/components/Views/Feed/Feed.tsx
+++ b/src/components/Views/Feed/Feed.tsx
@@ -16,7 +16,7 @@ import { useTopics } from '~/context/topics'
 import { useUI } from '~/context/ui'
 import { loadUnratedShouts } from '~/graphql/api/private'
 import type { Author, Reaction, Shout } from '~/graphql/schema/core.gen'
-import { byCreated } from '~/lib/sortby'
+import { byCreated } from '~/lib/sortBy'
 import { FeedSearchParams } from '~/routes/feed/(feed)'
 import { CommentDate } from '../../Article/CommentDate'
 import { getShareUrl } from '../../Article/SharePopup'
diff --git a/src/components/Views/Home.tsx b/src/components/Views/Home.tsx
index 251a3e99..d3674dca 100644
--- a/src/components/Views/Home.tsx
+++ b/src/components/Views/Home.tsx
@@ -6,7 +6,7 @@ import { loadShouts } from '~/graphql/api/public'
 import { Author, Shout, Topic } from '~/graphql/schema/core.gen'
 import { SHOUTS_PER_PAGE } from '~/routes/(main)'
 import { capitalize } from '~/utils/capitalize'
-import { splitToPages } from '~/utils/splitToPages'
+import { paginate } from '~/utils/paginate'
 import Banner from '../Discours/Banner'
 import Hero from '../Discours/Hero'
 import { Beside } from '../Feed/Beside'
@@ -62,11 +62,7 @@ export const HomeView = (props: HomeViewProps) => {
   )
 
   const pages = createMemo<Shout[][]>(() =>
-    splitToPages(
-      props.featuredShouts || [],
-      SHOUTS_PER_PAGE + CLIENT_LOAD_ARTICLES_COUNT,
-      LOAD_MORE_PAGE_SIZE
-    )
+    paginate(props.featuredShouts || [], SHOUTS_PER_PAGE + CLIENT_LOAD_ARTICLES_COUNT, LOAD_MORE_PAGE_SIZE)
   )
 
   return (
diff --git a/src/components/Views/Profile/ProfileSecurity.tsx b/src/components/Views/Profile/ProfileSecurity.tsx
index e07407c4..7a6345a2 100644
--- a/src/components/Views/Profile/ProfileSecurity.tsx
+++ b/src/components/Views/Profile/ProfileSecurity.tsx
@@ -10,7 +10,7 @@ import { Loading } from '~/components/_shared/Loading'
 import { useLocalize } from '~/context/localize'
 import { useSession } from '~/context/session'
 import { DEFAULT_HEADER_OFFSET, useSnackbar, useUI } from '~/context/ui'
-import { validateEmail } from '~/utils/validateEmail'
+import { validateEmail } from '~/utils/validate'
 import styles from './Settings.module.scss'
 
 type FormField = 'oldPassword' | 'newPassword' | 'newPasswordConfirm' | 'email'
diff --git a/src/components/Views/Profile/ProfileSettings.tsx b/src/components/Views/Profile/ProfileSettings.tsx
index 6179ac2a..d986e420 100644
--- a/src/components/Views/Profile/ProfileSettings.tsx
+++ b/src/components/Views/Profile/ProfileSettings.tsx
@@ -23,7 +23,7 @@ import { getImageUrl } from '~/lib/getImageUrl'
 import { handleImageUpload } from '~/lib/handleImageUpload'
 import { profileSocialLinks } from '~/lib/profileSocialLinks'
 import { clone } from '~/utils/clone'
-import { validateUrl } from '~/utils/validateUrl'
+import { validateUrl } from '~/utils/validate'
 import { Modal } from '../../Nav/Modal'
 import { ProfileSettingsNavigation } from '../../Nav/ProfileSettingsNavigation'
 import { Button } from '../../_shared/Button'
@@ -188,6 +188,14 @@ export const ProfileSettings = () => {
     updateFormField('links', link, true)
   }
 
+  const slugUpdate = (ev: InputEvent) => {
+    const input = (ev.target || ev.currentTarget) as HTMLInputElement
+    const value = input.value
+    const newValue = value.startsWith('@') || value.startsWith('!') ? value.substring(1) : value
+    input.value = newValue
+    updateFormField('slug', newValue)
+  }
+
   return (
     <Show when={Object.keys(form).length > 0 && isFormInitialized()} fallback={<Loading />}>
       <>
@@ -293,7 +301,7 @@ export const ProfileSettings = () => {
                     <h4>{t('Address on Discours')}</h4>
                     <div class="pretty-form__item">
                       <div class={styles.discoursName}>
-                        <label for="user-address">https://{hostname()}/author/</label>
+                        <label for="user-address">{hostname()}/@</label>
                         <div class={styles.discoursNameField}>
                           <input
                             type="text"
@@ -301,7 +309,7 @@ export const ProfileSettings = () => {
                             id="user-address"
                             data-lpignore="true"
                             autocomplete="one-time-code2"
-                            onInput={(event) => updateFormField('slug', event.currentTarget.value)}
+                            onInput={slugUpdate}
                             value={form.slug || ''}
                             ref={(el) => (slugInputRef = el)}
                             class="nolabel"
diff --git a/src/components/Views/PublishSettings/PublishSettings.tsx b/src/components/Views/PublishSettings/PublishSettings.tsx
index 141e130d..023f5d79 100644
--- a/src/components/Views/PublishSettings/PublishSettings.tsx
+++ b/src/components/Views/PublishSettings/PublishSettings.tsx
@@ -144,7 +144,12 @@ export const PublishSettings = (props: Props) => {
   const handleSaveDraft = () => {
     saveShout({ ...props.form, ...settingsForm })
   }
-
+  const removeSpecial = (ev: InputEvent) => {
+    const input = ev.target as HTMLInputElement
+    const value = input.value
+    const newValue = value.startsWith('@') || value.startsWith('!') ? value.substring(1) : value
+    input.value = newValue
+  }
   return (
     <form class={clsx(styles.PublishSettings, 'inputs-wrapper')}>
       <div class="wide-container">
@@ -235,7 +240,7 @@ export const PublishSettings = (props: Props) => {
 
             <h4>{t('Slug')}</h4>
             <div class="pretty-form__item">
-              <input type="text" name="slug" id="slug" value={settingsForm.slug} />
+              <input type="text" name="slug" id="slug" value={settingsForm.slug} onInput={removeSpecial} />
               <label for="slug">{t('Slug')}</label>
             </div>
 
diff --git a/src/components/Views/Topic.tsx b/src/components/Views/Topic.tsx
index f46a4654..102b1bf7 100644
--- a/src/components/Views/Topic.tsx
+++ b/src/components/Views/Topic.tsx
@@ -8,9 +8,9 @@ import { useTopics } from '~/context/topics'
 import { loadAuthors, loadFollowersByTopic, loadShouts } from '~/graphql/api/public'
 import { Author, AuthorsBy, LoadShoutsOptions, Shout, Topic } from '~/graphql/schema/core.gen'
 import { SHOUTS_PER_PAGE } from '~/routes/(main)'
-import { getUnixtime } from '~/utils/getServerDate'
+import { getUnixtime } from '~/utils/date'
+import { paginate } from '~/utils/paginate'
 import { restoreScrollPosition, saveScrollPosition } from '~/utils/scroll'
-import { splitToPages } from '~/utils/splitToPages'
 import styles from '../../styles/Topic.module.scss'
 import { Beside } from '../Feed/Beside'
 import { Row1 } from '../Feed/Row1'
@@ -140,7 +140,7 @@ export const TopicView = (props: Props) => {
   })
   */
   const pages = createMemo<Shout[][]>(() =>
-    splitToPages(sortedFeed(), PRERENDERED_ARTICLES_COUNT, LOAD_MORE_PAGE_SIZE)
+    paginate(sortedFeed(), PRERENDERED_ARTICLES_COUNT, LOAD_MORE_PAGE_SIZE)
   )
   return (
     <div class={styles.topicPage}>
diff --git a/src/components/_shared/DropArea/DropArea.tsx b/src/components/_shared/DropArea/DropArea.tsx
index 33f4114a..e334d3de 100644
--- a/src/components/_shared/DropArea/DropArea.tsx
+++ b/src/components/_shared/DropArea/DropArea.tsx
@@ -6,7 +6,7 @@ import { useLocalize } from '~/context/localize'
 import { useSession } from '~/context/session'
 import { handleFileUpload } from '~/lib/handleFileUpload'
 import { handleImageUpload } from '~/lib/handleImageUpload'
-import { validateFiles } from '~/utils/validateFile'
+import { validateUploads } from '~/lib/validateUploads'
 
 import styles from './DropArea.module.scss'
 
@@ -62,7 +62,7 @@ export const DropArea = (props: Props) => {
       setDropAreaError(t('Many files, choose only one'))
       return
     }
-    const isValid = validateFiles(props.fileType, selectedFiles)
+    const isValid = validateUploads(props.fileType, selectedFiles)
     if (isValid) {
       await runUpload(selectedFiles)
     } else {
diff --git a/src/components/_shared/DropdownSelect/DropdownSelect.tsx b/src/components/_shared/DropdownSelect/DropdownSelect.tsx
index fe972703..af39bd93 100644
--- a/src/components/_shared/DropdownSelect/DropdownSelect.tsx
+++ b/src/components/_shared/DropdownSelect/DropdownSelect.tsx
@@ -1,7 +1,7 @@
 import { clsx } from 'clsx'
 import { For, Show, createSignal } from 'solid-js'
 
-import { useOutsideClickHandler } from '~/utils/useOutsideClickHandler'
+import { useOutsideClickHandler } from '~/lib/useOutsideClickHandler'
 
 import styles from './DropdownSelect.module.scss'
 
diff --git a/src/components/_shared/Lightbox/Lightbox.tsx b/src/components/_shared/Lightbox/Lightbox.tsx
index f1c0532e..b543e257 100644
--- a/src/components/_shared/Lightbox/Lightbox.tsx
+++ b/src/components/_shared/Lightbox/Lightbox.tsx
@@ -2,7 +2,7 @@ import { clsx } from 'clsx'
 import { Show, createEffect, createMemo, createSignal, on, onCleanup } from 'solid-js'
 
 import { getImageUrl } from '~/lib/getImageUrl'
-import { useEscKeyDownHandler } from '~/utils/useEscKeyDownHandler'
+import { useEscKeyDownHandler } from '~/lib/useEscKeyDownHandler'
 import { Icon } from '../Icon'
 
 import styles from './Lightbox.module.scss'
diff --git a/src/components/_shared/Newsletter/Newsletter.tsx b/src/components/_shared/Newsletter/Newsletter.tsx
index 91176da6..9f52b951 100644
--- a/src/components/_shared/Newsletter/Newsletter.tsx
+++ b/src/components/_shared/Newsletter/Newsletter.tsx
@@ -2,7 +2,7 @@ import { JSX, Show, createSignal } from 'solid-js'
 
 import { useLocalize } from '~/context/localize'
 import { useSnackbar } from '~/context/ui'
-import { validateEmail } from '~/utils/validateEmail'
+import { validateEmail } from '~/utils/validate'
 import { Button } from '../Button'
 import { Icon } from '../Icon'
 
diff --git a/src/components/_shared/Popup/Popup.tsx b/src/components/_shared/Popup/Popup.tsx
index 81537575..0418b4ce 100644
--- a/src/components/_shared/Popup/Popup.tsx
+++ b/src/components/_shared/Popup/Popup.tsx
@@ -1,7 +1,7 @@
 import { clsx } from 'clsx'
 import { JSX, Show, createEffect, createSignal } from 'solid-js'
 
-import { useOutsideClickHandler } from '~/utils/useOutsideClickHandler'
+import { useOutsideClickHandler } from '~/lib/useOutsideClickHandler'
 
 import styles from './Popup.module.scss'
 
diff --git a/src/components/_shared/SolidSwiper/EditorSwiper.tsx b/src/components/_shared/SolidSwiper/EditorSwiper.tsx
index fec1edbc..26d2062d 100644
--- a/src/components/_shared/SolidSwiper/EditorSwiper.tsx
+++ b/src/components/_shared/SolidSwiper/EditorSwiper.tsx
@@ -6,10 +6,10 @@ import { Manipulation, Navigation, Pagination } from 'swiper/modules'
 
 import { useLocalize } from '~/context/localize'
 import { useSnackbar } from '~/context/ui'
+import { composeMediaItems } from '~/lib/composeMediaItems'
 import { getImageUrl } from '~/lib/getImageUrl'
 import { handleImageUpload } from '~/lib/handleImageUpload'
-import { composeMediaItems } from '~/utils/composeMediaItems'
-import { validateFiles } from '~/utils/validateFile'
+import { validateUploads } from '~/lib/validateUploads'
 import { DropArea } from '../DropArea'
 import { Icon } from '../Icon'
 import { Image } from '../Image'
@@ -90,7 +90,7 @@ export const EditorSwiper = (props: Props) => {
   })
 
   const initUpload = async (selectedFiles: UploadFile[]) => {
-    const isValid = validateFiles('image', selectedFiles)
+    const isValid = validateUploads('image', selectedFiles)
 
     if (!isValid) {
       await showSnackbar({ type: 'error', body: t('Invalid file type') })
diff --git a/src/context/authors.tsx b/src/context/authors.tsx
index 34da77ff..8b0f1546 100644
--- a/src/context/authors.tsx
+++ b/src/context/authors.tsx
@@ -17,7 +17,7 @@ import {
   Shout,
   Topic
 } from '~/graphql/schema/core.gen'
-import { byStat } from '~/lib/sortby'
+import { byStat } from '~/lib/sortBy'
 import { useFeed } from './feed'
 
 const TOP_AUTHORS_COUNT = 5
diff --git a/src/context/feed.tsx b/src/context/feed.tsx
index e412de80..0fdaa6b6 100644
--- a/src/context/feed.tsx
+++ b/src/context/feed.tsx
@@ -10,7 +10,7 @@ import {
   Shout,
   Topic
 } from '~/graphql/schema/core.gen'
-import { byStat } from '../lib/sortby'
+import { byStat } from '../lib/sortBy'
 import { useGraphQL } from './graphql'
 
 export const PRERENDERED_ARTICLES_COUNT = 5
diff --git a/src/context/profile.tsx b/src/context/profile.tsx
index 821cf8d5..4c5b68b5 100644
--- a/src/context/profile.tsx
+++ b/src/context/profile.tsx
@@ -76,16 +76,21 @@ export const ProfileProvider = (props: { children: JSX.Element }) => {
     }
   })
 
+  // TODO: validation error for `!` and `@`
+
   const updateFormField = (fieldName: string, value: string, remove?: boolean) => {
+    let val = value
+    if (fieldName === 'slug' && value.startsWith('@')) val = value.substring(1)
+    if (fieldName === 'slug' && value.startsWith('!')) val = value.substring(1)
     if (fieldName === 'links') {
       setForm((prev) => {
         const updatedLinks = remove
-          ? (prev.links || []).filter((item) => item !== value)
-          : [...(prev.links || []), value]
+          ? (prev.links || []).filter((item) => item !== val)
+          : [...(prev.links || []), val]
         return { ...prev, links: updatedLinks }
       })
     } else {
-      setForm((prev) => ({ ...prev, [fieldName]: value }))
+      setForm((prev) => ({ ...prev, [fieldName]: val }))
     }
   }
 
diff --git a/src/context/topics.tsx b/src/context/topics.tsx
index 4f60da6e..b97e0cd8 100644
--- a/src/context/topics.tsx
+++ b/src/context/topics.tsx
@@ -13,7 +13,7 @@ import {
 import { loadTopics } from '~/graphql/api/public'
 import { Topic } from '~/graphql/schema/core.gen'
 import { getRandomTopicsFromArray } from '~/lib/getRandomTopicsFromArray'
-import { byTopicStatDesc } from '../lib/sortby'
+import { byTopicStatDesc } from '../lib/sortBy'
 
 type TopicsContextType = {
   topicEntities: Accessor<{ [topicSlug: string]: Topic }>
diff --git a/src/utils/composeMediaItems.ts b/src/lib/composeMediaItems.ts
similarity index 100%
rename from src/utils/composeMediaItems.ts
rename to src/lib/composeMediaItems.ts
diff --git a/src/utils/media-query.ts b/src/lib/mediaQuery.ts
similarity index 100%
rename from src/utils/media-query.ts
rename to src/lib/mediaQuery.ts
diff --git a/src/utils/useEscKeyDownHandler.ts b/src/lib/useEscKeyDownHandler.ts
similarity index 100%
rename from src/utils/useEscKeyDownHandler.ts
rename to src/lib/useEscKeyDownHandler.ts
diff --git a/src/utils/useOutsideClickHandler.ts b/src/lib/useOutsideClickHandler.ts
similarity index 100%
rename from src/utils/useOutsideClickHandler.ts
rename to src/lib/useOutsideClickHandler.ts
diff --git a/src/utils/validateFile.ts b/src/lib/validateUploads.ts
similarity index 78%
rename from src/utils/validateFile.ts
rename to src/lib/validateUploads.ts
index 8ba40887..709d2bd3 100644
--- a/src/utils/validateFile.ts
+++ b/src/lib/validateUploads.ts
@@ -1,9 +1,9 @@
 import { UploadFile } from '@solid-primitives/upload'
 
-export const validateFiles = (fileType: string, files: UploadFile[]): boolean => {
-  const imageExtensions = new Set(['jpg', 'jpeg', 'png', 'gif', 'bmp'])
-  const docExtensions = new Set(['doc', 'docx', 'pdf', 'txt'])
+export const imageExtensions = new Set(['jpg', 'jpeg', 'png', 'gif', 'bmp'])
+export const docExtensions = new Set(['doc', 'docx', 'pdf', 'txt'])
 
+export const validateUploads = (fileType: string, files: UploadFile[]): boolean => {
   for (const file of files) {
     let isValid: boolean
 
diff --git a/src/routes/(main).tsx b/src/routes/(main).tsx
index 5e003914..e3f589a3 100644
--- a/src/routes/(main).tsx
+++ b/src/routes/(main).tsx
@@ -3,7 +3,7 @@ import { Show, Suspense, createEffect, createSignal, onMount } from 'solid-js'
 import { useTopics } from '~/context/topics'
 import { loadShouts, loadTopics } from '~/graphql/api/public'
 import { LoadShoutsOptions, Shout } from '~/graphql/schema/core.gen'
-import { byStat } from '~/lib/sortby'
+import { byStat } from '~/lib/sortBy'
 import { restoreScrollPosition, saveScrollPosition } from '~/utils/scroll'
 import { HomeView, HomeViewProps } from '../components/Views/Home'
 import { Loading } from '../components/_shared/Loading'
diff --git a/src/types.ts b/src/types.ts
deleted file mode 100644
index 11f61ad9..00000000
--- a/src/types.ts
+++ /dev/null
@@ -1,29 +0,0 @@
-export interface CommentDefinition {
-  user: string
-  time_ago: string
-  content: string
-  comments: CommentDefinition[]
-}
-
-export interface StoryDefinition {
-  id: string
-  points: string
-  url: string
-  title: string
-  domain: string
-  type: string
-  time_ago: string
-  user: string
-  comments_count: number
-  comments: CommentDefinition[]
-}
-
-export interface UserDefinition {
-  error: string
-  id: string
-  created: string
-  karma: number
-  about: string
-}
-
-export type StoryTypes = 'top' | 'new' | 'show' | 'ask' | 'job'
diff --git a/src/utils/date.ts b/src/utils/date.ts
new file mode 100644
index 00000000..95aafb26
--- /dev/null
+++ b/src/utils/date.ts
@@ -0,0 +1,2 @@
+export const getShortDate = (date: Date) => date.toISOString().slice(0, 10) // 2023-12-31
+export const getUnixtime = (date: Date) => Math.floor(date.getTime() / 1000) as number
diff --git a/src/utils/getNumeralsDeclension.ts b/src/utils/getNumeralsDeclension.ts
deleted file mode 100644
index dafc15c0..00000000
--- a/src/utils/getNumeralsDeclension.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-// Usage in tsx: {getNumeralsDeclension(NUMBER, ['яблоко', 'яблока', 'яблок'])}
-export const getNumeralsDeclension = (number: number, words: string[], cases = [2, 0, 1, 1, 1, 2]) =>
-  words[number % 100 > 4 && number % 100 < 20 ? 2 : cases[number % 10 < 5 ? number % 10 : 5]]
diff --git a/src/utils/getServerDate.ts b/src/utils/getServerDate.ts
deleted file mode 100644
index 39fa4223..00000000
--- a/src/utils/getServerDate.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-export const getServerDate = (date: Date): string => {
-  // 2023-12-31
-  return date.toISOString().slice(0, 10)
-}
-
-export const getUnixtime = (date: Date): number => {
-  return Math.floor(date.getTime() / 1000)
-}
diff --git a/src/utils/paginate.ts b/src/utils/paginate.ts
new file mode 100644
index 00000000..e514a4f8
--- /dev/null
+++ b/src/utils/paginate.ts
@@ -0,0 +1,10 @@
+export function paginate<T>(arr: T[], startIndex: number, pageSize: number): T[][] {
+  return arr.slice(startIndex).reduce((acc, item, index) => {
+    if (index % pageSize === 0) {
+      acc.push([])
+    }
+
+    acc?.at(-1)?.push(item)
+    return acc
+  }, [] as T[][])
+}
diff --git a/src/utils/splitToPages.ts b/src/utils/splitToPages.ts
deleted file mode 100644
index 3946cb35..00000000
--- a/src/utils/splitToPages.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-export function splitToPages<T>(arr: T[], startIndex: number, pageSize: number): T[][] {
-  return arr.slice(startIndex).reduce((acc, article, index) => {
-    if (index % pageSize === 0) {
-      acc.push([])
-    }
-
-    acc?.at(-1)?.push(article)
-    return acc
-  }, [] as T[][])
-}
diff --git a/src/utils/validate.ts b/src/utils/validate.ts
new file mode 100644
index 00000000..8c4d14f5
--- /dev/null
+++ b/src/utils/validate.ts
@@ -0,0 +1,10 @@
+export const validateEmail = (email: string) => {
+  if (!email) return false
+
+  return /^[\w%+.-]+@[\d.a-z-]+\.[a-z]{2,}$/i.test(email)
+}
+
+export const validateUrl = (value: string) => {
+  // TODO: make it better
+  return value.includes('.') && !value.includes(' ')
+}
diff --git a/src/utils/validateEmail.ts b/src/utils/validateEmail.ts
deleted file mode 100644
index e3cd2913..00000000
--- a/src/utils/validateEmail.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-export const validateEmail = (email: string) => {
-  if (!email) {
-    return false
-  }
-
-  return /^[\w%+.-]+@[\d.a-z-]+\.[a-z]{2,}$/i.test(email)
-}
diff --git a/src/utils/validateUrl.ts b/src/utils/validateUrl.ts
deleted file mode 100644
index 9f416965..00000000
--- a/src/utils/validateUrl.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export const validateUrl = (value: string) => {
-  return value.includes('.') && !value.includes(' ')
-}
diff --git a/src/utils/verifyImg.ts b/src/utils/verifyImg.ts
deleted file mode 100644
index 0c8b3642..00000000
--- a/src/utils/verifyImg.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-export const verifyImg = (url: string) => {
-  return fetch(url, { method: 'HEAD' }).then((res) => {
-    return res.headers.get('Content-Type')?.startsWith('image')
-  })
-}
-
-const supportedExtensions = ['png', 'jpg', 'jpeg', 'gif', 'tiff', 'bpg']
-export const isImageExtension = (value: string) => {
-  return supportedExtensions.some((extension) => value.includes(extension))
-}