r/FirefoxCSS↗
Firefox CSS
Suggestions for and help with customizing the Firefox UI using CSS only.
42k subscribers141 posts / mo in Sep 2026 (incl. ~1% by known bots)117 authors / mosince 2017
r/FirefoxCSS has 42k members (+16% over the last 12 months). It gets about 141 posts a month from 117 people. Top topics: Browser Tabs Management, Tab Management and BookmarksSyncManagement.
When to post on r/FirefoxCSS
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How r/FirefoxCSS has grown
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Subscribers over time
Monthly activity
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Topics and brands on r/FirefoxCSS
Top topics
Share of the subreddit's posts
- Browser Tabs Management13%
- Tab Management8.2%
- BookmarksSyncManagement3.0%
- Firefox Updates & News2.6%
- Browser Search Bars2.5%
Brands people mention
Most-mentioned brands and sites, last 12 months
Posting rules for r/FirefoxCSS
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How often posts get removed on r/FirefoxCSS
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What works on r/FirefoxCSS
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Who posts on r/FirefoxCSS
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What people ask for on r/FirefoxCSS
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Subreddits like r/FirefoxCSS
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Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research