A userChrome.css theme to bring Arc Browser look on Windows to Firefox. Work with Windows, Linux and macOS ✨

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• Updated Nov 14, 2025
• CSS

Dynamic theming of Firefox (and Thunderbird) using your Pywal colors

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• Updated Jun 3, 2026
• TypeScript

The hands-down best Vivaldi modpack to recreate the Zen/Arc browser Vibe.

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• Updated Aug 26, 2026
• JavaScript

A minimalistic one-line userChrome.css theme for Firefox

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• Updated Nov 10, 2026
• CSS

A theme that aims to look nice and clean while not compromising functionality.

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• Updated Oct 17, 2022
• CSS

Void theme ported to the best browser in the world Helium Browser!

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• Updated Oct 14, 2026

Minimize your Firefox toolbar to one single line [MIRROR]

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• Updated Jan 8, 2025
• CSS

Native app used alongside the Pywalfox addon

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• Updated May 2, 2026
• Python

The best dark mode web browser theme for your favorite web browser. That makes browsing the web more comfortable. The dark theme is for the following web browser Google Chrome, Firefox, and Microsoft Edge.

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• Updated Jan 23, 2026

🎨 Dynamic theming of Gecko-based browser using your Native color scheme generator

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• Updated Nov 2, 2026
• TypeScript

BlueCalm is a theme for various operating systems and browsers designed to look good and be calming.

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• Updated May 12, 2021
• Python

Codigrate themes for Chrome

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• Updated Oct 1, 2026
• JavaScript

Yet another Zen-Browser custom theme. Based on Ncurses with the gruvbox color scheme. If other colors are preffered, either let me know or change them yourself in the respected source files.

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• Updated Jun 22, 2026
• CSS

Web Browser Themes/Skins based on Init7 branding

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• Updated Jul 23, 2022

🌳️🌐️🎨️ The Bliss Browser themes module, enabling browser themes, and allowing them to be displayed correctly.

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• Updated Feb 12, 2023
• Python

Change Firefox themes with a HTTP/JSON API!

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• Updated Oct 28, 2024
• Rust

Template repository for customizing your browsing experience by designing your unique Chromium-based web browser theme from scratch

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• Updated Feb 8, 2026

Codigrate themes for Firefox

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• Updated Oct 30, 2026

Modern dark theme browser extension with customizable per-site controls

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• Updated Dec 11, 2025
• JavaScript

Inverse Contrast is a lightweight Google Chrome extension that instantly inverts webpage colors. Create a high-contrast dark mode to reduce eye strain and improve web accessibility with a single click or custom keyboard shortcut.

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• Updated Jun 19, 2026
• JavaScript