Simple Profanity Blocker by deepanshu
Filters profanity and foul language from web pages in real-time. Privacy-first — all processing stays local.
Available on Firefox for Android™Available on Firefox for Android™
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About this extension
Simple Profanity Blocker is a modern, lightweight Firefox extension designed to clean up your web browsing experience. Whether you want to make browsing safer for children, avoid hostile online environments, or simply prefer a cleaner web, this extension gives you complete control over the text you see.
Simple Profanity Blocker is built with a strict privacy-first architecture.
* 100% Local: All word lists, normalizations, and content-filtering run locally on your device's CPU.
* No Data Collection: The extension does not collect, track, or transmit your browsing history, webpage text, or personal information.
* No Network Requests: No analytics tracking, no external API calls, and no remote telemetry.
- Four Filter Modes:
- Blur (Default): Hides bad words with a premium glassmorphic blur. Simply hover your cursor over the word to temporarily reveal it.
- Emoji: Replaces foul words with an angry censored emoji (🤬).
- Replace: Replaces the letters with asterisks (****).
- Remove: Completely deletes the offending words from the page.
- Three Filtering Tiers: Choose your sensitivity level (Severe, Moderate, or Mild) to match your comfort level.
- Advanced Evasion Protection: Smart matching catches common tricks used to bypass simple filters, including leetspeak (a*ck), repeated characters (auuuuck), zero-width space tricks, and non-alphabetic separators (a.u.c.k).
- Whitelisting & False-Positive Guard: Uses an intelligent built-in dictionary to prevent innocent words from being accidentally blocked.
- Custom Control: Add your own custom words to filter, or remove words you don't mind seeing.
- Dynamic SPA Support: Automatically scans new content loaded dynamically via infinite scroll, React/Vue frameworks, or AJAX, keeping the page clean without requiring a refresh.
- Per-Site Overrides: Easily toggle the blocker on or off for specific websites with a single click in the extension popup.
Simple Profanity Blocker is built with a strict privacy-first architecture.
* 100% Local: All word lists, normalizations, and content-filtering run locally on your device's CPU.
* No Data Collection: The extension does not collect, track, or transmit your browsing history, webpage text, or personal information.
* No Network Requests: No analytics tracking, no external API calls, and no remote telemetry.
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Permissions and data
Required permissions:
- Access browser tabs
- Access your data for all websites
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 1.0.3
- Size
- 56.48 KB
- Last updated
- 11 hours ago (Jul 4, 2026)
- Related Categories
- License
- Mozilla Public License 2.0
- Version History
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