diff --git a/src/components/Board/Customize/form.ts b/src/components/Board/Customize/form.ts
index b65463dbc..5bd77a6e8 100644
--- a/src/components/Board/Customize/form.ts
+++ b/src/components/Board/Customize/form.ts
@@ -1,43 +1,10 @@
 import { DEFAULT_THEME, MANTINE_COLORS, MantineColor } from '@mantine/core';
 import { createFormContext } from '@mantine/form';
 import { z } from 'zod';
-
-const schema = z.object({
-  layout: z.object({
-    leftSidebarEnabled: z.boolean(),
-    rightSidebarEnabled: z.boolean(),
-    pingsEnabled: z.boolean(),
-  }),
-  gridstack: z.object({
-    sm: z.number().min(1).max(8),
-    md: z.number().min(3).max(16),
-    lg: z.number().min(5).max(20),
-  }),
-  pageMetadata: z.object({
-    pageTitle: z.string(),
-    metaTitle: z.string(),
-    logoSrc: z.string(),
-    faviconSrc: z.string(),
-  }),
-  appearance: z.object({
-    backgroundSrc: z.string(),
-    primaryColor: z.custom<MantineColor>(
-      (value) => typeof value === 'string' && MANTINE_COLORS.includes(value)
-    ),
-    secondaryColor: z.custom<MantineColor>(
-      (value) => typeof value === 'string' && MANTINE_COLORS.includes(value)
-    ),
-    shade: z
-      .number()
-      .min(0)
-      .max(DEFAULT_THEME.colors['blue'].length - 1),
-    opacity: z.number().min(10).max(100),
-    customCss: z.string(),
-  }),
-});
+import { boardCustomizationSchema } from '~/validations/dashboards';
 
 export const [
   BoardCustomizationFormProvider,
   useBoardCustomizationFormContext,
   useBoardCustomizationForm,
-] = createFormContext<z.infer<typeof schema>>();
+] = createFormContext<z.infer<typeof boardCustomizationSchema>>();
diff --git a/src/pages/board/[slug]/customize.tsx b/src/pages/board/[slug]/customize.tsx
index a3edd6a94..389ec6e9d 100644
--- a/src/pages/board/[slug]/customize.tsx
+++ b/src/pages/board/[slug]/customize.tsx
@@ -1,10 +1,13 @@
 import { Button, Container, Group, Paper, Stack, Text, Title } from '@mantine/core';
+import { showNotification, updateNotification } from '@mantine/notifications';
 import {
   IconArrowLeft,
   IconBrush,
   IconChartCandle,
+  IconCheck,
   IconDragDrop,
   IconLayout,
+  IconX,
   TablerIconsProps,
 } from '@tabler/icons-react';
 import { GetServerSideProps } from 'next';
@@ -12,6 +15,7 @@ import { useTranslation } from 'next-i18next';
 import Link from 'next/link';
 import { useRouter } from 'next/router';
 import { ReactNode } from 'react';
+import { z } from 'zod';
 import { AppearanceCustomization } from '~/components/Board/Customize/Appearance/AppearanceCustomization';
 import { GridstackCustomization } from '~/components/Board/Customize/Gridstack/GridstackCustomization';
 import { LayoutCustomization } from '~/components/Board/Customize/Layout/LayoutCustomization';
@@ -21,44 +25,91 @@ import {
   useBoardCustomizationForm,
 } from '~/components/Board/Customize/form';
 import { MainLayout } from '~/components/layout/main';
+import { createTrpcServersideHelpers } from '~/server/api/helper';
+import { getServerAuthSession } from '~/server/auth';
 import { getServerSideTranslations } from '~/tools/server/getServerSideTranslations';
 import { dashboardNamespaces } from '~/tools/server/translation-namespaces';
+import { api } from '~/utils/api';
+import { useI18nZodResolver } from '~/utils/i18n-zod-resolver';
+import { boardCustomizationSchema } from '~/validations/dashboards';
+
+const notificationId = 'board-customization-notification';
 
 export default function CustomizationPage() {
   const query = useRouter().query as { slug: string };
-  const { t } = useTranslation([
-    'settings/customization/general',
-    'settings/customization/color-selector',
-  ]);
+  const utils = api.useContext();
+  const { data: config } = api.config.byName.useQuery({ name: query.slug });
+  const { mutateAsync: saveCusomization, isLoading } = api.config.saveCusomization.useMutation();
+  const { i18nZodResolver } = useI18nZodResolver();
   const form = useBoardCustomizationForm({
     initialValues: {
       layout: {
-        leftSidebarEnabled: false,
-        rightSidebarEnabled: false,
-        pingsEnabled: false,
+        leftSidebarEnabled: config?.settings.customization.layout.enabledLeftSidebar ?? false,
+        rightSidebarEnabled: config?.settings.customization.layout.enabledRightSidebar ?? false,
+        pingsEnabled: config?.settings.customization.layout.enabledPing ?? false,
       },
       appearance: {
-        backgroundSrc: '',
-        primaryColor: 'red',
-        secondaryColor: 'orange',
-        shade: 8,
-        opacity: 50,
-        customCss: '',
+        backgroundSrc: config?.settings.customization.backgroundImageUrl ?? '',
+        primaryColor: config?.settings.customization.colors.primary ?? 'red',
+        secondaryColor: config?.settings.customization.colors.secondary ?? 'orange',
+        shade: (config?.settings.customization.colors.shade as number | undefined) ?? 8,
+        opacity: config?.settings.customization.appOpacity ?? 50,
+        customCss: config?.settings.customization.customCss ?? '',
       },
       gridstack: {
-        sm: 3,
-        md: 6,
-        lg: 12,
+        sm: config?.settings.customization.gridstack?.columnCountSmall ?? 3,
+        md: config?.settings.customization.gridstack?.columnCountMedium ?? 6,
+        lg: config?.settings.customization.gridstack?.columnCountLarge ?? 12,
       },
       pageMetadata: {
-        pageTitle: '',
-        metaTitle: '',
-        logoSrc: '',
-        faviconSrc: '',
+        pageTitle: config?.settings.customization.pageTitle ?? '',
+        metaTitle: config?.settings.customization.metaTitle ?? '',
+        logoSrc: config?.settings.customization.logoImageUrl ?? '',
+        faviconSrc: config?.settings.customization.faviconUrl ?? '',
       },
     },
+    validate: i18nZodResolver(boardCustomizationSchema),
   });
 
+  const handleSubmit = async (values: z.infer<typeof boardCustomizationSchema>) => {
+    if (isLoading) return;
+    showNotification({
+      id: notificationId,
+      title: 'Saving customization',
+      message: 'Please wait while we save your customization',
+      loading: true,
+    });
+    await saveCusomization(
+      {
+        name: query.slug,
+        ...values,
+      },
+      {
+        onSettled() {
+          void utils.config.byName.invalidate({ name: query.slug });
+        },
+        onSuccess() {
+          updateNotification({
+            id: notificationId,
+            title: 'Customization saved',
+            message: 'Your customization has been saved',
+            color: 'green',
+            icon: <IconCheck />,
+          });
+        },
+        onError() {
+          updateNotification({
+            id: notificationId,
+            title: 'Error',
+            message: 'Unable to save customization',
+            color: 'red',
+            icon: <IconX />,
+          });
+        },
+      }
+    );
+  };
+
   return (
     <MainLayout>
       <Container>
@@ -76,7 +127,7 @@ export default function CustomizationPage() {
               </Button>
             </Group>
             <BoardCustomizationFormProvider form={form}>
-              <form>
+              <form onSubmit={form.onSubmit(handleSubmit)}>
                 <Stack spacing="xl">
                   <Stack spacing="xs">
                     <SectionTitle type="layout" icon={IconLayout} />
@@ -94,7 +145,9 @@ export default function CustomizationPage() {
                     <SectionTitle type="appereance" icon={IconBrush} />
                     <AppearanceCustomization />
                   </Stack>
-                  <Button type="submit">Save changes</Button>
+                  <Button type="submit" loading={isLoading}>
+                    Save changes
+                  </Button>
                 </Stack>
               </form>
             </BoardCustomizationFormProvider>
@@ -124,11 +177,34 @@ const SectionTitle = ({ type, icon: Icon }: SectionTitleProps) => {
   );
 };
 
-export const getServerSideProps: GetServerSideProps = async ({ req, res, locale }) => {
+const routeParamsSchema = z.object({
+  slug: z.string(),
+});
+
+export const getServerSideProps: GetServerSideProps = async ({ req, res, locale, params }) => {
+  const routeParams = routeParamsSchema.safeParse(params);
+  if (!routeParams.success) {
+    return {
+      notFound: true,
+    };
+  }
+
+  const session = await getServerAuthSession({ req, res });
+  if (!session?.user.isAdmin) {
+    return {
+      notFound: true,
+    };
+  }
+
+  const helpers = await createTrpcServersideHelpers({ req, res });
+
+  helpers.config.byName.prefetch({ name: routeParams.data.slug });
+
   const translations = await getServerSideTranslations(dashboardNamespaces, locale, req, res);
 
   return {
     props: {
+      trpcState: helpers.dehydrate(),
       ...translations,
     },
   };
diff --git a/src/pages/board/index.tsx b/src/pages/board/index.tsx
index 8a8f8ad82..680a2a606 100644
--- a/src/pages/board/index.tsx
+++ b/src/pages/board/index.tsx
@@ -2,7 +2,13 @@ import { Button, ButtonProps, Text, Title, Tooltip } from '@mantine/core';
 import { useHotkeys, useWindowEvent } from '@mantine/hooks';
 import { openContextModal } from '@mantine/modals';
 import { hideNotification, showNotification } from '@mantine/notifications';
-import { IconApps, IconBrandDocker, IconEditCircle, IconEditCircleOff } from '@tabler/icons-react';
+import {
+  IconApps,
+  IconBrandDocker,
+  IconEditCircle,
+  IconEditCircleOff,
+  IconSettings,
+} from '@tabler/icons-react';
 import Consola from 'consola';
 import { GetServerSideProps, InferGetServerSidePropsType } from 'next';
 import { useSession } from 'next-auth/react';
@@ -75,6 +81,7 @@ export const HeaderActions = () => {
     <>
       <DockerButton />
       <ToggleEditModeButton />
+      <CustomizeBoardButton />
     </>
   );
 };
@@ -91,6 +98,18 @@ const DockerButton = () => {
   );
 };
 
+const CustomizeBoardButton = () => {
+  const { name } = useConfigContext();
+
+  return (
+    <Tooltip label="Customize board">
+      <HeaderActionButton component={Link} href={`/board/${name}/customize`}>
+        <IconSettings size={20} stroke={1.5} />
+      </HeaderActionButton>
+    </Tooltip>
+  );
+};
+
 type SpecificLinkProps = {
   component: typeof Link;
   href: string;
diff --git a/src/server/api/helper.ts b/src/server/api/helper.ts
new file mode 100644
index 000000000..58d1a820b
--- /dev/null
+++ b/src/server/api/helper.ts
@@ -0,0 +1,16 @@
+import { createServerSideHelpers } from '@trpc/react-query/server';
+import { CreateNextContextOptions } from '@trpc/server/adapters/next';
+import { GetServerSidePropsContext } from 'next';
+import superjson from 'superjson';
+
+import { rootRouter } from './root';
+import { createTRPCContext } from './trpc';
+
+export const createTrpcServersideHelpers = async (
+  props: Pick<GetServerSidePropsContext, 'req' | 'res'>
+) =>
+  createServerSideHelpers({
+    router: rootRouter,
+    ctx: await createTRPCContext(props as CreateNextContextOptions),
+    transformer: superjson,
+  });
diff --git a/src/server/api/routers/config.ts b/src/server/api/routers/config.ts
index f2d9ee94a..87a3e6987 100644
--- a/src/server/api/routers/config.ts
+++ b/src/server/api/routers/config.ts
@@ -1,13 +1,19 @@
+import { MantineTheme } from '@mantine/core';
 import { TRPCError } from '@trpc/server';
 import Consola from 'consola';
 import fs from 'fs';
 import path from 'path';
 import { z } from 'zod';
+import { configExists } from '~/tools/config/configExists';
+import { getFrontendConfig } from '~/tools/config/getFrontendConfig';
 import { BackendConfigType, ConfigType } from '~/types/config';
+import { boardCustomizationSchema } from '~/validations/dashboards';
 import { IRssWidget } from '~/widgets/rss/RssWidgetTile';
 
 import { getConfig } from '../../../tools/config/getConfig';
-import { createTRPCRouter, publicProcedure } from '../trpc';
+import { adminProcedure, createTRPCRouter, publicProcedure } from '../trpc';
+
+const configNameSchema = z.string().regex(/^[a-zA-Z0-9-_]+$/);
 
 export const configRouter = createTRPCRouter({
   all: publicProcedure.query(async () => {
@@ -17,10 +23,10 @@ export const configRouter = createTRPCRouter({
     // Strip the .json extension from the file name
     return files.map((file) => file.replace('.json', ''));
   }),
-  delete: publicProcedure
+  delete: adminProcedure
     .input(
       z.object({
-        name: z.string(),
+        name: configNameSchema,
       })
     )
     .mutation(async ({ input }) => {
@@ -60,10 +66,10 @@ export const configRouter = createTRPCRouter({
         message: 'Configuration deleted with success',
       };
     }),
-  save: publicProcedure
+  save: adminProcedure
     .input(
       z.object({
-        name: z.string(),
+        name: configNameSchema,
         config: z.custom<ConfigType>((x) => !!x && typeof x === 'object'),
       })
     )
@@ -124,6 +130,8 @@ export const configRouter = createTRPCRouter({
             },
           })),
         ],
+        // Settings can only be changed in the configuration file
+        settings: previousConfig.settings,
       };
 
       newConfig = {
@@ -160,4 +168,59 @@ export const configRouter = createTRPCRouter({
         message: 'Configuration saved with success',
       };
     }),
+  byName: publicProcedure
+    .input(
+      z.object({
+        name: configNameSchema,
+      })
+    )
+    .query(async ({ ctx, input }) => {
+      if (!configExists(input.name)) {
+        throw new TRPCError({
+          code: 'NOT_FOUND',
+          message: 'Configuration not found',
+        });
+      }
+
+      return await getFrontendConfig(input.name);
+    }),
+  saveCusomization: adminProcedure
+    .input(boardCustomizationSchema.and(z.object({ name: configNameSchema })))
+    .mutation(async ({ input }) => {
+      const previousConfig = getConfig(input.name);
+      const newConfig = {
+        ...previousConfig,
+        settings: {
+          ...previousConfig.settings,
+          customization: {
+            ...previousConfig.settings.customization,
+            appOpacity: input.appearance.opacity,
+            backgroundImageUrl: input.appearance.backgroundSrc,
+            colors: {
+              primary: input.appearance.primaryColor,
+              secondary: input.appearance.secondaryColor,
+              shade: input.appearance.shade as MantineTheme['primaryShade'],
+            },
+            customCss: input.appearance.customCss,
+            faviconUrl: input.pageMetadata.faviconSrc,
+            gridstack: {
+              columnCountSmall: input.gridstack.sm,
+              columnCountMedium: input.gridstack.md,
+              columnCountLarge: input.gridstack.lg,
+            },
+            layout: {
+              ...previousConfig.settings.customization.layout,
+              enabledLeftSidebar: input.layout.leftSidebarEnabled,
+              enabledRightSidebar: input.layout.rightSidebarEnabled,
+              enabledPing: input.layout.pingsEnabled,
+            },
+            logoImageUrl: input.pageMetadata.logoSrc,
+            metaTitle: input.pageMetadata.metaTitle,
+            pageTitle: input.pageMetadata.pageTitle,
+          },
+        },
+      } satisfies BackendConfigType;
+      const targetPath = path.join('data/configs', `${input.name}.json`);
+      fs.writeFileSync(targetPath, JSON.stringify(newConfig, null, 2), 'utf8');
+    }),
 });
diff --git a/src/server/api/trpc.ts b/src/server/api/trpc.ts
index cef582ff5..a1ec1e477 100644
--- a/src/server/api/trpc.ts
+++ b/src/server/api/trpc.ts
@@ -128,3 +128,30 @@ const enforceUserIsAuthed = t.middleware(({ ctx, next }) => {
  * @see https://trpc.io/docs/procedures
  */
 export const protectedProcedure = t.procedure.use(enforceUserIsAuthed);
+
+/** Reusable middleware that enforces users are logged in before running the procedure. */
+const enforceUserIsAdmin = t.middleware(({ ctx, next }) => {
+  if (!ctx.session?.user) {
+    throw new TRPCError({ code: 'UNAUTHORIZED' });
+  }
+  if (!ctx.session?.user.isAdmin) {
+    throw new TRPCError({ code: 'FORBIDDEN' });
+  }
+
+  return next({
+    ctx: {
+      // infers the `session` as non-nullable
+      session: { ...ctx.session, user: ctx.session.user },
+    },
+  });
+});
+
+/**
+ * Admin (authenticated) procedure
+ *
+ * If you want a query or mutation to ONLY be accessible to logged in admins, use this. It verifies
+ * the session is valid, guarantees `ctx.session.user` is not null and the user is an admin.
+ *
+ * @see https://trpc.io/docs/procedures
+ */
+export const adminProcedure = t.procedure.use(enforceUserIsAdmin);
diff --git a/src/validations/dashboards.ts b/src/validations/dashboards.ts
index e4bc4e3d4..a4d3fc3c5 100644
--- a/src/validations/dashboards.ts
+++ b/src/validations/dashboards.ts
@@ -1,5 +1,40 @@
+import { DEFAULT_THEME, MANTINE_COLORS, MantineColor } from '@mantine/core';
 import { z } from 'zod';
 
 export const createDashboardSchemaValidation = z.object({
   name: z.string().min(2).max(25),
 });
+
+export const boardCustomizationSchema = z.object({
+  layout: z.object({
+    leftSidebarEnabled: z.boolean(),
+    rightSidebarEnabled: z.boolean(),
+    pingsEnabled: z.boolean(),
+  }),
+  gridstack: z.object({
+    sm: z.number().min(1).max(8),
+    md: z.number().min(3).max(16),
+    lg: z.number().min(5).max(20),
+  }),
+  pageMetadata: z.object({
+    pageTitle: z.string(),
+    metaTitle: z.string(),
+    logoSrc: z.string(),
+    faviconSrc: z.string(),
+  }),
+  appearance: z.object({
+    backgroundSrc: z.string(),
+    primaryColor: z.custom<MantineColor>(
+      (value) => typeof value === 'string' && MANTINE_COLORS.includes(value)
+    ),
+    secondaryColor: z.custom<MantineColor>(
+      (value) => typeof value === 'string' && MANTINE_COLORS.includes(value)
+    ),
+    shade: z
+      .number()
+      .min(0)
+      .max(DEFAULT_THEME.colors['blue'].length - 1),
+    opacity: z.number().min(10).max(100),
+    customCss: z.string(),
+  }),
+});