FirefoxCSS-StoreCommunity Firefox themes
A quiet theme inspired by Linear and Apple Notes. No borders: the toolbar, tab list and page melt into one surface that takes on each site's colour. Tabs on the left or on top, an optional hover sidebar, a sun and moon dark/light button, and an ultrawide-friendly toolbar. Inter included.
A modern, clean redesign of Firefox focused on a more pleasant and visually appealing experience. Rounded corners across the interface, including the tab bar, menus, navigation area, and webpage container. The background adapts to the selected theme, creating a cohesive, smooth, and harmonious look.
Planus is a custom CSS theme for Firefox’s interface, tabs, tab previews and New Tab page, with flatter controls and consistent spacing.
Firefox OneLine Safari Style Theme Cloned from FoxOne theme. Added transparency and Bonjourr new tab plugin custom styles.
A 3 mode theme with less padding all the way around. Meant to blend in with WinUI and Windows Explorer Styled in [Micabar from Windhawk](https://github.com/ramensoftware/windows-11-file-explorer-styling-guide/blob/main/Themes/MicaBar/README.md). Built on [FoxOne by Firnschnee](https://github.com/firnschnee/foxone). StockMica+ supports [PWAsForFirefox](https://github.com/filips123/PWAsForFirefox)
A personal CSS theme that makes parts of the Firefox interface and home page more transparent, with navy blue and gold accents.
A refined light Firefox CSS theme inspired by modern macOS Safari, featuring a compact single-row navigation layout, Liquid Glass styling for Firefox Home, polished menus and panels, subtle animations, and optional wallpapers.
A minimal, gesture-driven Firefox setup — zero window chrome, multi-row tabs, and a UI that gets out of your way.
A premium, vibrant Aurora Neon glass-morphic setup pack for Firefox.
Transform your browsing experience with LUXE, a premium, dark-gold aesthetic custom setup pack for Firefox. Designed for cross-platform performance, this theme overhauls your browser user interface into a sleek, modern, and minimalist workspace.
Dissolves the toolbar band ; tab strip, address bar and bookmarks bar ; into your desktop instead of painting a solid bar. Includes an optional wallpaper mode that keeps your wallpaper visible even when other windows sit behind Firefox.
Custom classic theme for firefox 155 A mix of custom code alongside Echelon and customcssforfx bits
Morpheon Element is a dark theme for Firefox built around smooth gradients and authentic skeuomorphic styling. Inspired by Morpheon Dark for Google Chrome, Enlightenment GTK, and Microsoft Zune.
Windows의 mica에 리퀴드 글래스 느낌을 섞은 FireFox의 userChrome 테마입니다. This is a FireFox userChrome theme that blends the feel of liquid glass with Windows Mica.
My first firefox theme, I hope you will like it.
Mostly just custom color scheme and a disappearing nav bar that reappears when you hover near the top. Very minimal. Very demure.
A theme for Opera GX Skin Lovers. Complete compatibility with the stable version of the browser. 一款专为 Opera GX 皮肤爱好者打造的主题。与浏览器稳定版完全兼容。
A highly refined, premium CSS theme that brings the sleek, flawless macOS Safari aesthetic to Firefox and Firefox based browsers. Built on top of the GWfox-T theme, this project fixes common visual glitches, perfects the UI elements, and introduces true Safari-like "Compact Mode" to firefox
The “Human” theme for Firefox 152, like the “Human” theme for GTK 2.24 / 3.24 / 4.8..4.23 & Qt 5.15 / 6.x, to harmonize the appearance of your programs within your classic MATE desktop environment. It uses icons from gnome-theme on Linux.
Foxlim is a slim, compact, and simple oneline stylesheet for the Proton UI Refresh in Firefox Desktop.
A custom CSS theme that transforms Firefox to seamlessly integrate with Windows 11's design language.
Beautiful, modern, usable, yet extremely customizable theme for Firefox and its forks. Natsumi keeps your browser's design familiar while adding a modern touch to it.
Every UI panel is hidden by default, leaving nothing but your content. Inspired by ShyFox.
A minimalistic one-line theme for Firefox. The theme collapses the tab bar and URL bar into a single row. Non-essential icons are hidden by default and slide in on hover with transitions. The hamburger menu sits next to the window controls instead of floating in the toolbar.
Minimal mint&blue theme for Firefox
Dark, dynamic (based on the system's accent color), theme for Firefox
Minimalist keyboard oriented theme with tab numbering for easier navigation.
Simple transparent title bar theme for Firefox and Thunderbird
A minimal medieval animated theme for Firefox
A tasty theme modification for Firefox 🦊
A minimal Firefox theme inspired by the aesthetics of Gruvbox and GNOME.
An automation tool for installing userChrome Themes
A lightweight Firefox userChrome theme designed to optimize screen space without sacrificing accessibility.
A minimalistic, mouse centered CSS theme for FireFox.
A simple Firefox theme using Sidebery sidebar.
Default Floorp Fluential UI modded
A sleek and modern dark blue Firefox theme with smooth, rounded elements for a refined browsing experience.
A modular UI customization for Firefox, using Sidebery for vertical tabs.
a simple, cool-esque, cyan monospace theme.
Firefox reimagined
Minimal Aesthetic Firefox CSS
🦊 Firefox user CSS theme looks similar to Chrome.
A theme for firefox with dark green colors.
buttons are for nerds.
A simple light theme I made to explore the world of Firefox theming.
A compact oneliner navbar css theme.
The mix of nostalgia and compact.
Keeps the original new tab page layout while making it look as glassy as possible.
Resurrecting a very Clean Firefox userChrome Mod
Modern blue glass theme with side bookmark bar
Minimal light Firefox theme with Arc like design with vertical tabs
Aims to make Firefox more compact and give a tiny bit more web view area for low-screen devices.
The Firefox theme with too many options
Combining the sleekness of Microsoft Edge and the aesthetics of the Arc browser
Safari-like minimalistic theme with system accent color
Another simple, oneline, minimal, keyboard-centered Firefox CSS theme.
A MacOSX Safari theme for Firefox 80+
make firefox flow like arc
A new way to view your web content. Like looking at photos printed from an old Polaroid camera.
UserChrome.css theme to bring Arc Browser look from Windows to Firefox!
Chicago 95 & Windows95/98-like theme for firefox
A very shy little theme that hides the entire browser interface in the window border
A Minimalist Dark Themed Firefox enabling vertical tabs support and modern URL Bar
A Minimal, Cozy, Vertical Optimized Firefox Theme
A color-customizable, zero navbar padding skin, modified from Starry Fox
Super clear desktop browser with zero buttons and gesture controls
A minimal oneliner, to minimizing the space used for url and tab bar
Compact, beautiful and minimalistic theme for the Firefox web browser.
Dress Firefox with the Opera One skin
Party like it's Firefox 57-88!
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
A minimal looking oneliner, with modular code for easy editing
A compact theme based on use multiple rows
A minimalist theme that uses animation to hide visual clutter.
A Firefox CSS Theme that aims to recreate the look and feel of the Chromium version of Microsoft Edge in the style of Dracula.
A single bar for Firefox's UI.
A minimalistic Firefox userChrome.css that integrates well with tiling window managers like i3
Bringing the classic Modern Modoki Netscape theme back
A minimalistic-retro theme based off the UWP interface
A fork of SimpleFox that uses feather icons!
A firefox Theme CSS
A firefox context menu theme and background wallpaper support with linux desktops being the main focus
Firefox Theme to Opera-GX skin Lovers.
Firefox CSS stylesheets for the Dark Space Theme. Matching more UI elements with the theme.
AuroraFox is a clean rounded Firefox theme, made using CSS, to match with the trendy 'Aurora' Colour Palette.
A simple theme that compacts a lot of the UI elements
KeyFox is A simple, minimal OneLiner Keyboard-centered CSS for Firefox.
Brave-Fox is a Firefox Theme that brings Brave's design elements into Firefox.
A minimalist one line theme
Clean theme with as much transparency as Firefox lets you do Compatibility: V91+
A Firefox theme, which features gentle curves, transparency and a minimal interface. Compatibility: V91+
A simple theme to maximize the vertical space of your monitor Compatibility: V91+
This theme supports all the window buttons layouts from Tweaks and it blends into the elementary OS Odin user interface. Compatibility: V91+
A Black n White AMOLED theme for Firefox, inspired by the Preto color scheme. Compatibility: V91+
A bunch of CSS code to make Firefox look closer to GNOME's native apps. Compatibility: V91+
A responsive "One-Line" theme based on SimpleFox for the new ProtonUI. Compatibility: V91+
A theme that uses MacOS Vibrancy and is styled after other Apple Apps Compatibility: V91+
Recreates the feel of Quantum with its squared tabs and menus. No rounded corners to be seen. Compatibility: V91+
An oneline userChrome.css theme for Firefox, which aims to keep the Proton experience Compatibility: V89+
Add macOS vibrancy to the Proton titlebar. Supports dark and light mode. Compatibility: V89+
Really simple userChrome.css to make the active tab stand out more; 61 lines. Compatibility: V89+
a proton based theme to make it even better Compatibility: V89+
Adaptive Theme to Firefox Themes Compatibility: V89+
![Gradient rounded tabs redesign and ultra compact mode [Proton UI] screenshot](/assets/img/themes/proton-ui-gradient-rounded-tabs-display.webp)
Firefox Proton UI minimal changes with nav-bar-connected rounded tabs, reduced compact mode, nightly color gradient accents etc.. Compatibility: V89+
🦊 I tried to preserve Proton’s feeling while preserving Photon’s strengths. Icons, Padding, Tab Design... Compatibility: V89+
🦊 I respect proton UI and aim to fix it. Icons, Padding, Tab Design... Compatibility: V89+
Vertical tabs in Firefox using tree style tabs. Vibrant tab selectors, full dark mode, titlebar text in nav-bar and much more. Compatibility: V89+
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+
Dark Theme to Firefox with Fuchsia Colors Compatibility: V89+
Theme to Make Firefox Compact and keep it's Beauty Compatibility: V89+
A dark indigo theme integrated with extensive functional and visual scripts. Compatibility: V89+
Theme to Blue and Alpenglow lovers Compatibility: V89+
Make your Firefox look like Safari. MacOS Big Sur inspired theme for Firefox on MacOS & Windows. Compatibility: V89+
Hides and improves interface Firefox and YouTube, giving maximum space for content and aiding concentration
A mininmalist Firefox theme with a lot of about: pages edited to act as resources. Updates about every month.
A dark userstyle for Firefox inspired by moonlight-vscode-theme and github-moonlight
Elegant Nord Theme with material design
A simple rounded theme
A Firefox userChrome.css theme that aims to recreate the look and feel of Microsoft Edge.
Is a userchrome that imitates (or attempts to imitate) the style of Microsoft's Edge Chromiun browser.
Emulates the Windows 10 context menus in Firefox.
A custom minimalist theme for Firefox with Tree Style Tab support
A theme that follows UWP styling. Featuring the original MDL2 design and Sun Valley refresh
A Material Design-inspired userChrome.css theme for Firefox
A minimal, yet functional configuration for Firefox!
Tested 84.0.1 Windows 10 / Default Dark Theme
Welcome to the repo for my Firefox theme, a theme that aims to look nice and clean while not compromising functionality. Compatibility: V89+
Firefox userChrome.css theme, based on https://github.com/AnubisZ9/Global-Dark-Nordic-theme/.
A modern Firefox CSS Theme
A minimal Firefox Theme for those who would like to properly enjoy my Simplify 10 Darkish - Windows 10 Themes Compatibility: V89+
A minimal Firefox Theme for those who would like to properly enjoy my Simplify 10 Silver Peach - Windows 10 Themes Compatibility: V89+
Custom userChrome.css for firefox based on Material Fox and Flying Fox with few small changes.
A compact & minimal Firefox theme built for macOS.
Minimal Firefox theme and user.js focused on speed and design
No published themes match the current filters.