FB Customizer — Themes, Dark Mode & Wallpaper for Facebook

Themes, dark mode, wallpaper & custom colors for Facebook. Applies live, runs 100% locally, and never touches your feed. Free.

FB Customizer gives Facebook a personal look — real themes, a true dark mode, and wallpaper backgrounds — applied live on desktop Facebook, entirely in your browser. THEMES & DARK MODE • 12 curated themes, each with light and dark variants — Midnight, Ocean, Forest, Sunset, and more. • Deep theming: cards, dialogs, comments, menus, tooltips, settings popups, and form fields all follow your palette — not just the page background. • Your colors, too: accent, background, cards, text, muted text, and borders. FONTS, SIZE & WALLPAPER • Choose from built-in fonts and scale the text from 85% to 130%. • Set any image as your Facebook wallpaper, with a frosted-glass transparency slider so text stays readable. LIVE, LOCAL, PRIVATE • Everything applies live on supported Facebook desktop pages — no reload. • Runs 100% locally: no accounts, no servers, no analytics, no network requests. • It changes only how pages look — it never reads, filters, or modifies your feed. POWER TOOLS • Presets: save your whole setup under a name, switch anytime, export and import as files. • Quick theme previews in the popup, a safe-mode switch, and a full reset whenever you want. SUPPORTED • Chrome desktop on facebook.com. Mobile, Messenger, and other browsers are not supported. • Facebook changes its pages often; updates keep the themes working. FB Customizer is free and unofficial. It is not affiliated with, endorsed by, or connected to Meta Platforms, Inc. or Facebook.