diff --git a/commafeed-client/package-lock.json b/commafeed-client/package-lock.json
index 1e73a244..9339a0d1 100644
--- a/commafeed-client/package-lock.json
+++ b/commafeed-client/package-lock.json
@@ -25,6 +25,7 @@
         "dayjs": "^1.11.7",
         "interweave": "^13.1.0",
         "mousetrap": "^1.6.5",
+        "re-resizable": "^6.9.9",
         "react": "^18.2.0",
         "react-async-hook": "^4.0.0",
         "react-contexify": "^6.0.0",
@@ -10035,6 +10036,15 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/re-resizable": {
+      "version": "6.9.9",
+      "resolved": "https://registry.npmjs.org/re-resizable/-/re-resizable-6.9.9.tgz",
+      "integrity": "sha512-l+MBlKZffv/SicxDySKEEh42hR6m5bAHfNu3Tvxks2c4Ah+ldnWjfnVRwxo/nxF27SsUsxDS0raAzFuJNKABXA==",
+      "peerDependencies": {
+        "react": "^16.13.1 || ^17.0.0 || ^18.0.0",
+        "react-dom": "^16.13.1 || ^17.0.0 || ^18.0.0"
+      }
+    },
     "node_modules/react": {
       "version": "18.2.0",
       "resolved": "https://registry.npmjs.org/react/-/react-18.2.0.tgz",
diff --git a/commafeed-client/package.json b/commafeed-client/package.json
index 1f97656f..098bf7b2 100644
--- a/commafeed-client/package.json
+++ b/commafeed-client/package.json
@@ -31,6 +31,7 @@
     "dayjs": "^1.11.7",
     "interweave": "^13.1.0",
     "mousetrap": "^1.6.5",
+    "re-resizable": "^6.9.9",
     "react": "^18.2.0",
     "react-async-hook": "^4.0.0",
     "react-contexify": "^6.0.0",
diff --git a/commafeed-client/src/App.tsx b/commafeed-client/src/App.tsx
index 0e2d0f34..7f844545 100644
--- a/commafeed-client/src/App.tsx
+++ b/commafeed-client/src/App.tsx
@@ -66,6 +66,7 @@ function Providers(props: { children: React.ReactNode }) {
 const ApiDocumentationPage = React.lazy(() => import("pages/app/ApiDocumentationPage"))
 
 function AppRoutes() {
+    const sidebarWidth = useAppSelector(state => state.tree.sidebarWidth)
     return (
         <Routes>
             <Route path="/" element={<Navigate to={`/app/category/${Constants.categories.all.id}`} replace />} />
@@ -74,7 +75,7 @@ function AppRoutes() {
             <Route path="register" element={<RegistrationPage />} />
             <Route path="passwordRecovery" element={<PasswordRecoveryPage />} />
             <Route path="api" element={<ApiDocumentationPage />} />
-            <Route path="app" element={<Layout header={<Header />} sidebar={<Tree />} />}>
+            <Route path="app" element={<Layout header={<Header />} sidebar={<Tree />} sidebarWidth={sidebarWidth} />}>
                 <Route path="category">
                     <Route path=":id" element={<FeedEntriesPage sourceType="category" />} />
                     <Route path=":id/details" element={<CategoryDetailsPage />} />
@@ -135,8 +136,11 @@ function FaviconHandler() {
     const root = useAppSelector(state => state.tree.rootCategory)
     useEffect(() => {
         const unreadCount = categoryUnreadCount(root)
-        if (unreadCount === 0) Tinycon.reset()
-        else Tinycon.setBubble(unreadCount)
+        if (unreadCount === 0) {
+            Tinycon.reset()
+        } else {
+            Tinycon.setBubble(unreadCount)
+        }
     }, [root])
 
     return null
diff --git a/commafeed-client/src/app/constants.ts b/commafeed-client/src/app/constants.ts
index 4aecc298..0d56234a 100644
--- a/commafeed-client/src/app/constants.ts
+++ b/commafeed-client/src/app/constants.ts
@@ -88,7 +88,6 @@ export const Constants = {
     layout: {
         mobileBreakpoint: DEFAULT_THEME.breakpoints.md,
         headerHeight: 60,
-        sidebarWidth: 350,
         entryMaxWidth: 650,
         isTopVisible: (div: HTMLElement) => div.getBoundingClientRect().top >= Constants.layout.headerHeight,
         isBottomVisible: (div: HTMLElement) => div.getBoundingClientRect().bottom <= window.innerHeight,
diff --git a/commafeed-client/src/app/slices/tree.ts b/commafeed-client/src/app/slices/tree.ts
index 5b32bfa2..82c22777 100644
--- a/commafeed-client/src/app/slices/tree.ts
+++ b/commafeed-client/src/app/slices/tree.ts
@@ -9,10 +9,12 @@ import { redirectTo } from "./redirect"
 interface TreeState {
     rootCategory?: Category
     mobileMenuOpen: boolean
+    sidebarWidth: number
 }
 
 const initialState: TreeState = {
     mobileMenuOpen: false,
+    sidebarWidth: 350,
 }
 
 export const reloadTree = createAsyncThunk("tree/reload", () => client.category.getRoot().then(r => r.data))
@@ -27,6 +29,9 @@ export const treeSlice = createSlice({
         setMobileMenuOpen: (state, action: PayloadAction<boolean>) => {
             state.mobileMenuOpen = action.payload
         },
+        setSidebarWidth: (state, action: PayloadAction<number>) => {
+            state.sidebarWidth = action.payload
+        },
     },
     extraReducers: builder => {
         builder.addCase(reloadTree.fulfilled, (state, action) => {
@@ -54,5 +59,5 @@ export const treeSlice = createSlice({
     },
 })
 
-export const { setMobileMenuOpen } = treeSlice.actions
+export const { setMobileMenuOpen, setSidebarWidth } = treeSlice.actions
 export default treeSlice.reducer
diff --git a/commafeed-client/src/pages/app/Layout.tsx b/commafeed-client/src/pages/app/Layout.tsx
index b25daebe..1ba32e5a 100644
--- a/commafeed-client/src/pages/app/Layout.tsx
+++ b/commafeed-client/src/pages/app/Layout.tsx
@@ -16,7 +16,7 @@ import {
 import { useViewportSize } from "@mantine/hooks"
 import { Constants } from "app/constants"
 import { redirectToAdd, redirectToRootCategory } from "app/slices/redirect"
-import { reloadTree, setMobileMenuOpen } from "app/slices/tree"
+import { reloadTree, setMobileMenuOpen, setSidebarWidth } from "app/slices/tree"
 import { reloadProfile, reloadSettings, reloadTags } from "app/slices/user"
 import { useAppDispatch, useAppSelector } from "app/store"
 import { Loader } from "components/Loader"
@@ -26,28 +26,34 @@ import { OnMobile } from "components/responsive/OnMobile"
 import { useAppLoading } from "hooks/useAppLoading"
 import { useWebSocket } from "hooks/useWebSocket"
 import { LoadingPage } from "pages/LoadingPage"
+import { Resizable } from "re-resizable"
 import { ReactNode, Suspense, useEffect } from "react"
 import { TbPlus } from "react-icons/tb"
 import { Outlet } from "react-router-dom"
 
 interface LayoutProps {
     sidebar: ReactNode
+    sidebarWidth: number
     header: ReactNode
 }
 
 const sidebarPadding = DEFAULT_THEME.spacing.xs
 const sidebarRightBorderWidth = "1px"
 
-const useStyles = createStyles(theme => ({
+const useStyles = createStyles((theme, props: LayoutProps) => ({
+    sidebarContentResizeWrapper: {
+        padding: sidebarPadding,
+        minHeight: "100vh",
+    },
     sidebarContent: {
-        maxWidth: `calc(${Constants.layout.sidebarWidth}px - ${sidebarPadding} * 2 - ${sidebarRightBorderWidth})`,
+        maxWidth: `calc(${props.sidebarWidth}px - ${sidebarPadding} * 2 - ${sidebarRightBorderWidth})`,
         [theme.fn.smallerThan(Constants.layout.mobileBreakpoint)]: {
             maxWidth: `calc(100vw - ${sidebarPadding} * 2 - ${sidebarRightBorderWidth})`,
         },
     },
     mainContentWrapper: {
         paddingTop: Constants.layout.headerHeight,
-        paddingLeft: Constants.layout.sidebarWidth,
+        paddingLeft: props.sidebarWidth,
         paddingRight: 0,
         paddingBottom: 0,
         [theme.fn.smallerThan(Constants.layout.mobileBreakpoint)]: {
@@ -55,7 +61,7 @@ const useStyles = createStyles(theme => ({
         },
     },
     mainContent: {
-        maxWidth: `calc(100vw - ${Constants.layout.sidebarWidth}px)`,
+        maxWidth: `calc(100vw - ${props.sidebarWidth}px)`,
         padding: theme.spacing.md,
         [theme.fn.smallerThan(Constants.layout.mobileBreakpoint)]: {
             maxWidth: "100vw",
@@ -76,8 +82,8 @@ function LogoAndTitle() {
     )
 }
 
-export default function Layout({ sidebar, header }: LayoutProps) {
-    const { classes } = useStyles()
+export default function Layout(props: LayoutProps) {
+    const { classes } = useStyles(props)
     const theme = useMantineTheme()
     const viewport = useViewportSize()
     const { loading } = useAppLoading()
@@ -85,6 +91,8 @@ export default function Layout({ sidebar, header }: LayoutProps) {
     const dispatch = useAppDispatch()
     useWebSocket()
 
+    const handleResize = (element: HTMLElement) => dispatch(setSidebarWidth(element.offsetWidth))
+
     useEffect(() => {
         dispatch(reloadSettings())
         dispatch(reloadProfile())
@@ -122,14 +130,30 @@ export default function Layout({ sidebar, header }: LayoutProps) {
             navbar={
                 <Navbar
                     id="sidebar"
-                    p={sidebarPadding}
                     hiddenBreakpoint={Constants.layout.mobileBreakpoint}
                     hidden={!mobileMenuOpen}
-                    width={{ md: Constants.layout.sidebarWidth }}
+                    width={{ md: props.sidebarWidth }}
                 >
-                    <Navbar.Section grow component={ScrollArea} mx="-xs" px="xs">
-                        <Box className={classes.sidebarContent}>{sidebar}</Box>
-                    </Navbar.Section>
+                    <Resizable
+                        enable={{
+                            top: false,
+                            right: true,
+                            bottom: false,
+                            left: false,
+                            topRight: false,
+                            bottomRight: false,
+                            bottomLeft: false,
+                            topLeft: false,
+                        }}
+                        onResize={(e, dir, el) => handleResize(el)}
+                        minWidth={120}
+                    >
+                        <Box className={classes.sidebarContentResizeWrapper}>
+                            <Navbar.Section grow component={ScrollArea} mx="-xs" px="xs">
+                                <Box className={classes.sidebarContent}>{props.sidebar}</Box>
+                            </Navbar.Section>
+                        </Box>
+                    </Resizable>
                 </Navbar>
             }
             header={
@@ -147,19 +171,19 @@ export default function Layout({ sidebar, header }: LayoutProps) {
                         {!mobileMenuOpen && (
                             <Group>
                                 <Box mr="sm">{burger}</Box>
-                                <Box sx={{ flexGrow: 1 }}>{header}</Box>
+                                <Box sx={{ flexGrow: 1 }}>{props.header}</Box>
                             </Group>
                         )}
                     </OnMobile>
                     <OnDesktop>
                         <Group>
-                            <Group position="apart" sx={{ width: Constants.layout.sidebarWidth - 16 }}>
+                            <Group position="apart" sx={{ width: props.sidebarWidth - 16 }}>
                                 <Box>
                                     <LogoAndTitle />
                                 </Box>
                                 <Box>{addButton}</Box>
                             </Group>
-                            <Box sx={{ flexGrow: 1 }}>{header}</Box>
+                            <Box sx={{ flexGrow: 1 }}>{props.header}</Box>
                         </Group>
                     </OnDesktop>
                 </Header>