CSS Userchrome

Open-source CSS projects categorized as Userchrome

Top 18 CSS Userchrome Projects

  • GitHub repo MaterialFox

    A Material Design-inspired userChrome.css theme for Firefox

    Project mention: Firefox Release 89.0 | news.ycombinator.com | 2021-06-01
  • GitHub repo CustomCSSforFx

    Custom CSS tweaks for Firefox

    Project mention: Firefox 89 Proton Feedback Megathread | reddit.com/r/firefox | 2021-06-04

    Take a look at Aris-T2 CustomCSSforFx This is nothing but just one of many similar projects that users Firefox's ability to accept different styles and interface forms through css files.

  • GitHub repo FlyingFox

    An opinionated set of configurations for firefox.

    Project mention: Microsoft, Opera, Brave, Vivaldi ... be like | reddit.com/r/linuxmemes | 2021-05-30

    Yeah me too. I use this css theme on it: https://github.com/akshat46/FlyingFox

  • GitHub repo SimplerentFox

    🦊 A Userstyle theme for Firefox minimalist, transparent and Keyboard centered

    Project mention: Foxdust | reddit.com/r/desktops | 2021-02-25

    Firefox: Mod of One Lienr Simplerent Fox by Miguel Ravila

  • GitHub repo Quantum-Nox-Firefox-Dark-Full-Theme

    A customizable full dark theme for Firefox. You can also add extra functions using the CSS and JS files here apart from the theme.

    Project mention: Firefox 89 Proton Feedback Megathread | reddit.com/r/firefox | 2021-06-04

    As for the rest of the UI I mainly relied on CustomCSSforFx by Aris-t2: https://github.com/Aris-t2/CustomCSSforFx a bit of CSS from Quantum-Nox-Firefox-Dark-Full-Theme: https://github.com/Izheil/Quantum-Nox-Firefox-Dark-Full-Theme by Izheil and some CSS that I liked.

  • GitHub repo elementaryos-firefox-theme

    This theme for Firefox supports all the window buttons layouts from Tweaks and it blends into the elementary OS user interface.

    Project mention: Firefox scrolling is jittery/laggy sometimes in 5.1.7 Hera | reddit.com/r/elementaryos | 2021-05-29

    I installed this theme: https://github.com/Zonnev/elementaryos-firefox-theme/tree/elementaryos-odin-firefox-theme

  • GitHub repo Prismatic-Night

    A dark themed startpage and dark themes for Firefox and Linux inspired by Material design and Adapta.

    Project mention: Add-ons width changes to a fixed value when placed in overflow menu | reddit.com/r/FirefoxCSS | 2021-05-10

    Found one beautiful startpage on github

  • GitHub repo slick-fox

    :fox_face: A firefox config that has rounded tabs and a url bar that can disappear when not selected on. It works with any theme.

    Project mention: Slick-Fox Proton Update | reddit.com/r/FirefoxCSS | 2021-06-04

    Here is the GitHub Repo: https://github.com/etesam913/slick-fox

  • GitHub repo simpleMenuWizard

    Hide contextmenu items in Firefox Photon

    Project mention: Firefox context menu | reddit.com/r/firefox | 2021-06-12

    There is Simple Menu (not sure that can change order) : https://github.com/stonecrusher/simpleMenuWizard

  • GitHub repo Firefox-UWP-Style

    MDL2 Theme for Firefox

    Project mention: Lepton - v1.0 Release | reddit.com/r/firefox | 2021-06-08
  • GitHub repo FirefoxW10ContextMenus

    Emulates the Windows 10 context menus in Firefox.

    Project mention: Make Bookmark Toolbar Drop-down and Selection Match Theme | reddit.com/r/FirefoxCSS | 2021-03-11

    if you wanna save some time styling this stuff, I'd suggest just reading through the stylesheet I just sent you and testing the rules to see how they affect it. keep in mind there are variables in there for colors and stuff, the variables are set in uc-variables.css on the same repo. I'd just replace them unless you're gonna use the whole thing. you can also do the same kinda thing with this stylesheet, it's of a similar scope to mine but with a different style. I think it might be missing a couple of the newer context menus though, so if you're going to use the selectors from one of these, I would suggest using my selectors. I update this repo pretty frequently and new context menu stuff gets added to firefox pretty frequently too.

  • GitHub repo Remove-Firefox-Megabar

    Remove the new Firefox Megabar using CSS

    Project mention: Firefox Tabs on Bottom of address bar! | reddit.com/r/firefox | 2021-04-22

    Have my CSS (using it in 84, probably breaks in proton of course). Depends on this CSS file for the 'megabar'.

  • GitHub repo Safari-Theme-for-Firefox

    Make Firefox look more native on macOS. Light Mode / Dark Mode.

    Project mention: Safori with minor changes, works great on Proton! | reddit.com/r/FirefoxCSS | 2021-06-03

    Based on https://github.com/diedummydie/Safari-Theme-for-Firefox and https://github.com/floriandierickx/Safari-Theme-for-Firefox

  • GitHub repo ff-ultra-compact-mode

    A Better Compact Mode for Firefox Proton

    Project mention: About userChrome.css files. | reddit.com/r/FirefoxCSS | 2021-06-05
  • GitHub repo Firefox-Theme

    Sweet_Pop! Beautify, Customize Firefox. Minimalist oneliner theme for Firefox perfectly matching Sweet Dark.

    Project mention: Need One Line UI solution for Proton Design | reddit.com/r/FirefoxCSS | 2021-05-17

    I made one https://github.com/PROxZIMA/Firefox-Theme/

  • GitHub repo rainfox

    It's like Photon, but better.

    Project mention: Firefox 89 - where are my tabs? | reddit.com/r/firefox | 2021-06-09
  • GitHub repo Quietfox-Proton

    Quietfox release for Proton, upgrades and improvments from myself, and from the Lepton project

    Project mention: I too updated Quietfox to 89, here's my take | reddit.com/r/FirefoxCSS | 2021-06-06
  • GitHub repo Firefox-Browser-Proton-Custom

    A custom userChrome.css for Firefox 86+ (February 2021). For personal purpose only.

    Project mention: I really hope the "playing" indicator is reversed to how it looked before proton. It looks awful at the moment. | reddit.com/r/firefox | 2021-02-21

    Sample CSS for Proton

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2021-06-12.


What are some of the best open-source Userchrome projects in CSS? This list will help you:

Project Stars
1 MaterialFox 1,583
2 CustomCSSforFx 1,271
3 FlyingFox 928
4 SimplerentFox 758
5 Quantum-Nox-Firefox-Dark-Full-Theme 344
6 elementaryos-firefox-theme 318
7 Prismatic-Night 246
8 slick-fox 243
9 simpleMenuWizard 187
10 Firefox-UWP-Style 107
11 FirefoxW10ContextMenus 103
12 Remove-Firefox-Megabar 66
13 Safari-Theme-for-Firefox 54
14 ff-ultra-compact-mode 37
15 Firefox-Theme 26
16 rainfox 14
17 Quietfox-Proton 5
18 Firefox-Browser-Proton-Custom 4