JShelter

JShelter controls the APIs provided by the browser. The goal is to improve the privacy and security of the user running the extension.

JShelter: Regain Control Over Browser Activity

JShelter is a unique Firefox extension that improves the privacy and security of your web browsing. It restricts the amount of data websites can gather by controlling the APIs provided by the browser. It can allow or forbid certain actions, reduce the precision of geolocation, and act as a protective barrier against potential threats. JShelter ensures users have control over what their browsers are doing.
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Add-on stats

Users: 483
-6
Rating: 4.44
(43)
Version: 0.19.1 (Last updated: 2024-09-13)
Creation date: 2019-02-27
Weekly download count: 20
Firefox on Android: Yes
Risk impact: High risk impact
Risk likelihood:
Moderate risk likelihood
Manifest version: 2
Permissions:
  • storage
  • tabs
  • webRequest
  • webRequestBlocking
  • webNavigation
  • dns
  • <all_urls>
  • notifications
Size: 450.64K
URLs: Website

Ranking

# 4,651 ▼ 13
Other rankings
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Other platforms

JShelter (v0.19.1)
4.50 (24) N/A
Not available on Android
Not available on Edge
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Add-on summary

Analyze keywords

What is JShelter?

JShelter is a browser extension to give back control over what your browser is doing. A JavaScript-enabled web page can access much of the browser's functionality, with little control over this process available to the user: malicious websites can uniquely identify you through fingerprinting and use other tactics for tracking your activity. JShelter aims to improve the privacy and security of your web browsing.

How does it work?

Like a firewall that controls network connections, JShelter controls the APIs provided by the browser, restricting the data that they gather and send out to websites. JShelter adds a safety layer that allows the user to choose if a certain action should be forbidden on a site, or if it should be allowed with restrictions, such as reducing the precision of geolocation to the city area. This layer can also aid as a countermeasure against attacks targeting the browser, operating system or hardware.

Please see the FAQ (https://jshelter.org/faq/) and our blog (https://jshelter.org/blog/) for more information about the extension.

What is the threat model?

See https://jshelter.org/threatmodel/

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User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Comprehensive fingerprint protection
  • Works against Creepjs fingerprinter
  • Provides extra protection when JavaScript is enabled
  • First tool to effectively eliminate cross-site tracking
Cons
  • High CPU and memory usage
  • Causes issues with many websites, especially those using CAPTCHA
  • Some sites are blocked or display messages like 'This Browser Is Out of Date'
  • Notifications can be overwhelming and become noise
Most mentioned
  • High resource usage (CPU/RAM)
  • Breaks many websites
  • Effective fingerprint protection
  • Compatibility issues with CloudFlare
User reviews
I use this with custom settings (see below) in combination with CanvasBlocker to make my browser extremely resistant to fingerprinting well maintaining web functionality. I also highly recommend using LocalCDN to reduce tracking. Check out the add-on CloudHole by scakemyer if CloudFlare is a issue or your running a VPN but I usually have no issues. JSHelter Settings: ibb. co /8KyKQ5v CanvasBlocker Settings (edit .txt to .json): pastebin .com /YMWrxu99
by Mushrooms, 2024-11-20
by Flowerpot, 2024-10-07
Extremely complex but the only working fingerprint spoofing extension out there now that the original Fingerprint Spoofing extension/add-on has been removed from Github because later reiterations are malware and developer has stopped supporting it more than 5 years ago. On Firefox, but not Chrome it ramps up CPU usage and RAM.
by What???, 2024-08-06
View all user reviews

Add-on safety

Risk impact

JShelter requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk likelihood

JShelter is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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