JShelter

Extension for increasing security and privacy level of the user.

JShelter is a powerful browser extension designed to enhance your online privacy and security. It acts like a firewall for browser APIs, allowing users to control and restrict what data websites can access through JavaScript, thereby preventing tracking and fingerprinting techniques.

With JShelter, you can choose to block or limit certain actions on websites, such as masking precise geolocation information. This protection extends to counteracting attacks targeting your browser, operating system, or hardware. For a deeper understanding, explore their FAQ, blog, and detailed threat model. The extension is also backed by academic research available here.

Manifest V3
Users:
3,000+
Rating:
4.52
(25)
Version:
0.20.1 (Last updated: 2025-04-12)
Creation date:
2020-06-22
Permissions:
  • storage
  • tabs
  • webRequest
  • declarativeNetRequest
  • webNavigation
  • notifications
  • scripting
  • userScripts
Host permissions:
  • <all_urls>
Size:
454.66K
Full description:
See detailed description
Updated:
a day ago

Other platforms

JShelter (v0.20.1)
472 4.44 (43)

User reviews

JShelter is praised for significantly enhancing privacy by randomizing browser fingerprint data with an easy-to-use interface and customizable settings. Users appreciate its immediate effectiveness and site-specific JavaScript blocking. However, multiple reviews report issues including high CPU/memory usage causing freezes, breaking website functionalities like reCAPTCHA, intrusive notification pop-ups, and a confusing bug reporting process. While it is a strong privacy tool, usability challenges affect user experience.
Pros
  • Effectively enhances user privacy by randomizing fingerprinting parameters.
  • Provides a user-friendly graphical interface with easy-to-understand settings.
  • Works well out-of-the-box with no need for complicated initial setup.
  • Offers extensive customization options for advanced users.
  • Successfully blocks unwanted JavaScript pop-ups site-by-site, allowing selective blocking.
Cons
  • Causes high CPU and memory usage leading to system freezes on some pages.
  • Breaks functionality of websites using reCAPTCHA and DisQus services.
  • Notification pop-ups are intrusive and difficult to disable without advanced knowledge.
  • Some features like slider adjustments are informational only and do not change behavior.
  • Bug reporting and user support system is cumbersome, requiring account creation with difficult login processes.
Recent reviews
Great addon!
by Michael A, 2025-01-12

t's incredibly and unnecessarily complex. The notification pop-ups can't be stopped without being a developer or advanced knowledge of the extension which is incredibly frustrating. The slider options for manual adjustments are useless, they are for information purposes only even when in Chrome extension Developer Mode. Also, unlike the now malware ridden Fingerprint Spoofing extension, JShelter randomly spoofs your GPU instead of just stating "Unknown" at the recommended setting. The number of CPU cores can't be blocked even if you use a custom setting. Basically, you're stuck with the various presets unless you create your own custom level. And given what happened with Fingerprint Spoofing and other extensions (infected with malware), you should continuously back-up (pack extension) of all the extensions you feel are critical. However, if Google flags your extension, it disables it permanently.
by Google User, 2024-08-04

Благодарность разработчикам. Правда, поднагружает процессор (это неточно, проверьте)
by М, 2024-03-14
View all user reviews

Extension safety

Risk impact
Very high risk impact

JShelter requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood
Low risk likelihood

JShelter has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
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Upgrade to see full risk analysis details

Promo images

JShelter marquee promo image
Marquee promo image
Small promo image

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