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JShelter
Use JShelter, a browser extension that mitigates JavaScript threats such as fingerprinting, tracking, and data collection.
JShelterjshelter.orgVisit siteAbout JShelter
JShelter is a browser extension that controls the APIs browsers expose to JavaScript on visited pages. It restricts what data page scripts can see and gather to mitigate fingerprinting, tracking, and data collection.
Users can forbid specific APIs on a site or allow them with restrictions, such as limiting geolocation precision to the city area. The project documents different protection levels, required permissions, and its threat model.
Key features
- Restrict browser APIs available to JavaScript on visited pages
- Forbid selected APIs on specific sites
- Allow APIs with restrictions, such as city-area geolocation
- Address fingerprinting, tracking, and data collection from scripts
- Provide different protection levels for browsing
Best for: People who want per-site control over JavaScript APIs to limit fingerprinting and tracking.
Good for
- Per-site choice to forbid APIs or allow them with restrictions
- Can limit geolocation to city area rather than only blocking
- Published under the GNU General Public License
JShelter at a glance
- Website
- jshelter.org
- Category
- Privacy & Security › Ad & Tracker Blockers
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Browser extension, Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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