Seal mint
Minimal mint&blue theme for Firefox
Community Firefox themes
Discover userChrome.css themes shared by the Firefox community.
118 themes 258 tags 42,918 stars across theme repos
118 themes
Dynamic Color
Dark, dynamic (based on the system's accent color), theme for Firefox
Fennec
Minimal, customizable Firefox/LibreWolf setup with Zen-style sidebar workflow — no fork, no build.
wmfox
Minimalist keyboard oriented theme with tab numbering for easier navigation.
TransparentFox
Simple transparent title bar theme for Firefox and Thunderbird
NewFox
A minimal medieval animated theme for Firefox
Parfait
A tasty theme modification for Firefox 🦊
Gruvbox GNOMEish
A minimal Firefox theme inspired by the aesthetics of Gruvbox and GNOME.
git userChrome
An automation tool for installing userChrome Themes
FlexFox
A lightweight Firefox theme focused on usability, flexibility, and smooth performance.
LittleFox
A minimalistic, mouse centered CSS theme for FireFox.
Sakuras Simple Sidebar
A simple Firefox theme using Sidebery sidebar.
Elegant Floorp
Default Floorp Fluential UI modded
Firefox Moonlight Theme
A sleek and modern dark blue Firefox theme with smooth, rounded elements for a refined browsing experience.
DownToneUI
A modular UI customization for Firefox, using Sidebery for vertical tabs.
cyanmatrx
a simple, cool-esque, cyan monospace theme.
VP-NightSky
Firefox reimagined
MiniSthetic_Firefox
Minimal Aesthetic Firefox CSS
Material Fox Updated
🦊 Firefox user CSS theme looks similar to Chrome.
Minimalist-DarkGreen
A theme for firefox with dark green colors.
minimalistest oneliner
buttons are for nerds.
Monochrome Neubrutalism Firefox Simple
A simple light theme I made to explore the world of Firefox theming.
FireFox OneLine Navbar
A compact oneliner navbar css theme.
98/95fox Xtra Compact
The mix of nostalgia and compact.
GlassyFox
Keeps the original new tab page layout while making it look as glassy as possible.
Quietfox Reborn
Resurrecting a very Clean Firefox userChrome Mod
SnowFox
Modern blue glass theme with side bookmark bar
Minimal-Arc
Minimal light Firefox theme with Arc like design with vertical tabs
Aero Firefox
Brings the Windows 7 titlebar buttons to modern versions of Firefox
Firefox Xtra Compact
Aims to make Firefox more compact and give a tiny bit more web view area for low-screen devices.
FF Ultima
The Firefox theme with too many options
EdgyArc Fr
Combining the sleekness of Microsoft Edge and the aesthetics of the Arc browser
MacFox-Theme
Safari-like minimalistic theme with system accent color
Another Oneline
Another simple, oneline, minimal, keyboard-centered Firefox CSS theme.
WhiteSur
A MacOSX Safari theme for Firefox 80+
arcfox
make firefox flow like arc
FrameUI for Firefox
A new way to view your web content. Like looking at photos printed from an old Polaroid camera.
ArcWTF
UserChrome.css theme to bring Arc Browser look from Windows to Firefox!
98/95fox
Chicago 95 & Windows95/98-like theme for firefox
ShyFox
A very shy little theme that hides the entire browser interface in the window border
ArnimFox
A Minimalist Dark Themed Firefox enabling vertical tabs support and modern URL Bar
Shina Fox
A Minimal, Cozy, Vertical Optimized Firefox Theme
Dark Star
A color-customizable, zero navbar padding skin, modified from Starry Fox
Firefox-Alpha
Super clear desktop browser with zero buttons and gesture controls
minimal-one-line-firefox
A minimal oneliner, to minimizing the space used for url and tab bar
Essence
Compact, beautiful and minimalistic theme for the Firefox web browser.
Firefox-ONE
Dress Firefox with the Opera One skin
zap's cool photon theme
Party like it's Firefox 57-88!
DarkMatter
An intensively worked on, and highly customized dark theme made for Firefox Proton, stretching darkness into every corner of the browser and perfecting even the tiniest details
Bali10050's theme
A minimal looking oneliner, with modular code for easy editing
Three Rows Simple Compact Clean CSS
A compact theme based on use multiple rows
rounded-fox
A minimalist theme that uses animation to hide visual clutter.
Dracula
A Firefox CSS Theme that aims to recreate the look and feel of the Chromium version of Microsoft Edge in the style of Dracula.
Firefox Onebar
A single bar for Firefox's UI.
TileFox
A minimalistic Firefox userChrome.css that integrates well with tiling window managers like i3
Modoki Firefox
Bringing the classic Modern Modoki Netscape theme back
Firefox-UWP-Style-Theme-Omars-Edit
A minimalistic-retro theme based off the UWP interface
SimpleFox Feather Edition
A fork of SimpleFox that uses feather icons!
TYH Fox
A firefox Theme CSS
Elegant Fox
A firefox context menu theme and background wallpaper support with linux desktops being the main focus
Firefox-GX
Firefox Theme to Opera-GX skin Lovers.
starry-fox
Firefox CSS stylesheets for the Dark Space Theme. Matching more UI elements with the theme.
AuroraFox- Auroral Firefox
AuroraFox is a clean rounded Firefox theme, made using CSS, to match with the trendy 'Aurora' Colour Palette.
CompactFox
A simple theme that compacts a lot of the UI elements
KeyFox- A minimal, keyboard centered OneLiner CSS.
KeyFox is A simple, minimal OneLiner Keyboard-centered CSS for Firefox.
Brave-Fox: The Reimagined Browser, Reimagined
Brave-Fox is a Firefox Theme that brings Brave's design elements into Firefox.
Waterfall
A minimalist one line theme
Clean and Transparent
Clean theme with as much transparency as Firefox lets you do Compatibility: V91+
GentleFox
A Firefox theme, which features gentle curves, transparency and a minimal interface. Compatibility: V91+
Simple Oneliner
A simple theme to maximize the vertical space of your monitor Compatibility: V91+
Elementary OS Odin Firefox theme
This theme supports all the window buttons layouts from Tweaks and it blends into the elementary OS Odin user interface. Compatibility: V91+
PretoFox
A Black n White AMOLED theme for Firefox, inspired by the Preto color scheme. Compatibility: V91+
Firefox GNOME theme
A bunch of CSS code to make Firefox look closer to GNOME's native apps. Compatibility: V91+
Cascade
A responsive "One-Line" theme based on SimpleFox for the new ProtonUI. Compatibility: V91+
MacOSVibrant
A theme that uses MacOS Vibrancy and is styled after other Apple Apps Compatibility: V91+
Natura for Firefox
Nature theme for Firefox Compatibility: V91+
Proton Square
Recreates the feel of Quantum with its squared tabs and menus. No rounded corners to be seen. Compatibility: V91+
GruvFox by Alfarex2019
GruvFox is a remix of dpcdpc11's theme, featuring the gruvbox color palette. Compatibility: V91+
OnelineProton
An oneline userChrome.css theme for Firefox, which aims to keep the Proton experience Compatibility: V89+
ProtoVibrant
Add macOS vibrancy to the Proton titlebar. Supports dark and light mode. Compatibility: V89+
MartinFox
Really simple userChrome.css to make the active tab stand out more; 61 lines. Compatibility: V89+
pro-fox: enhanced firefox proton
a proton based theme to make it even better Compatibility: V89+
Chameleons-Beauty to Firefox CSS
Adaptive Theme to Firefox Themes Compatibility: V89+
![Gradient rounded tabs redesign and ultra compact mode [Proton UI] screenshot](/FirefoxCSS-Store.github.io/assets/img/themes/proton-ui-gradient-rounded-tabs-display.webp)
Gradient rounded tabs redesign and ultra compact mode [Proton UI]
Firefox Proton UI minimal changes with nav-bar-connected rounded tabs, reduced compact mode, nightly color gradient accents etc.. Compatibility: V89+
Lepton's Photon-Styled in Proton UI
🦊 I tried to preserve Proton’s feeling while preserving Photon’s strengths. Icons, Padding, Tab Design... Compatibility: V89+
Lepton(Proton Fix) in Proton UI
🦊 I respect proton UI and aim to fix it. Icons, Padding, Tab Design... Compatibility: V89+
Firefox vertical tabs (TST) UI
Vertical tabs in Firefox using tree style tabs. Vibrant tab selectors, full dark mode, titlebar text in nav-bar and much more. Compatibility: V89+
Australis like tabs in Proton UI
Changes to make the new proton UI redesign in Firefox better; including changes to tabs, more compact-compact mode, proton gradient accents in elements and much more Compatibility: V89+
DiamondFucsia Theme to Firefox Css
Dark Theme to Firefox with Fuchsia Colors Compatibility: V89+
Compact Mode to Firefox Css
Theme to Make Firefox Compact and keep it's Beauty Compatibility: V89+
duskFox
A dark indigo theme integrated with extensive functional and visual scripts. Compatibility: V89+
Alpen Blue to Firefox CSS
Theme to Blue and Alpenglow lovers Compatibility: V89+
WhiteSur Safari style for Firefox
Make your Firefox look like Safari. MacOS Big Sur inspired theme for Firefox on MacOS & Windows. Compatibility: V89+
Pseudo-fullscreen Firefox
Hides and improves interface Firefox and YouTube, giving maximum space for content and aiding concentration
Firefox Halo
A mininmalist Firefox theme with a lot of about: pages edited to act as resources. Updates about every month.
Moonlight 🌌
A dark userstyle for Firefox inspired by moonlight-vscode-theme and github-moonlight
Elegant Nord Theme
Elegant Nord Theme with material design
NicoFox
A simple rounded theme
Edge-Frfox
A Firefox userChrome.css theme that aims to recreate the look and feel of Microsoft Edge.
Firefox i3wm theme
A theme for Firefox meant to emulate qutebrowser and integrate with the i3 window manager.
EdgeFox
Is a userchrome that imitates (or attempts to imitate) the style of Microsoft's Edge Chromiun browser.
FirefoxW10ContextMenus
Emulates the Windows 10 context menus in Firefox.
Monochrome Tree
A custom minimalist theme for Firefox with Tree Style Tab support
Firefox UWP Style
A theme that follows UWP styling. Featuring the original MDL2 design and Sun Valley refresh
MaterialFox
A Material Design-inspired userChrome.css theme for Firefox
minimal-functional-fox
A minimal, yet functional configuration for Firefox!
Firefox-Mod-Blur
Tested 84.0.1 Windows 10 / Default Dark Theme
not-holar's theme
Welcome to the repo for my Firefox theme, a theme that aims to look nice and clean while not compromising functionality. Compatibility: V89+
nord-firefox
Firefox userChrome.css theme, based on https://github.com/AnubisZ9/Global-Dark-Nordic-theme/.
blurredfox
A modern Firefox CSS Theme
SimpleFox
🦊 A Userstyle theme for Firefox minimalist and Keyboard centered.
Simplify Darkish for Firefox
A minimal Firefox Theme for those who would like to properly enjoy my Simplify 10 Darkish - Windows 10 Themes Compatibility: V89+
Simplify Silver Peach for Firefox
A minimal Firefox Theme for those who would like to properly enjoy my Simplify 10 Silver Peach - Windows 10 Themes Compatibility: V89+
FirefoxCss
Custom userChrome.css for firefox based on Material Fox and Flying Fox with few small changes.
minimalFOX
A compact & minimal Firefox theme built for macOS.
Sweet_Pop!
Sweet_Pop! Minimalist oneliner theme for Firefox perfectly matching Sweet Dark.
Titlebar-Button-Fix
This theme fixes titlebar min max close buttons for Firefox in linux.
arcadia
Minimal Firefox theme and user.js focused on speed and design
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