Extension for increasing security and privacy level of the user.

Latest Version

Version

0.19.1

Update

November 21, 2024

Size

440KiB

Developer

JShelter Extension

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?

https://jshelter.org/threatmodel/

Can I read a paper about the extension?

Yes, see https://arxiv.org/abs/2204.01392

Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "author": "Libor Pol\u010d\u00e1k, Giorgio Maone, Martin Timko, Pavel Pohner, Peter Hor\u0148\u00e1k, Mat\u00fa\u0161 \u0160vanc\u00e1r, Marek Salo\u0148, Martin Bedn\u00e1\u0159, Radek Hranick\u00fd, Martin Zmitko", "background": { "service_worker": "service_worker.js" }, "action": { "default_icon": { "16": "img/icon-16.png", "32": "img/icon-32.png", "48": "img/icon-48.png", "64": "img/icon-64.png", "96": "img/icon-96.png", "128": "img/icon-128.png", "256": "img/icon-256.png", "512": "img/icon-512.png" }, "default_title": "JShelter", "default_popup": "popup.html" }, "content_scripts": [ { "matches": [""], "all_frames": true, "match_about_blank": true, "match_origin_as_fallback": true, "js": [ "nscl/lib/browser-polyfill.js", "nscl/common/uuid.js", "nscl/content/patchWindow.js", "lib/sha256.js", "helpers.js", "document_start.js" ], "run_at": "document_start" } ], "default_locale": "en", "description": "__MSG_extensionDescription__", "homepage_url": "https://JShelter.org", "icons": { "16": "img/icon-16.png", "32": "img/icon-32.png", "48": "img/icon-48.png", "64": "img/icon-64.png", "96": "img/icon-96.png", "128": "img/icon-128.png", "256": "img/icon-256.png", "512": "img/icon-512.png" }, "web_accessible_resources": [{ "resources": ["farble.wasm"], "matches": [""] }], "manifest_version": 3, "minimum_chrome_version": "120", "name": "__MSG_extensionName__", "options_page": "options.html", "content_security_policy": { "extension_pages": "default-src 'none'; script-src 'self'; connect-src 'self'; img-src 'self' data:; style-src 'self';base-uri 'self';form-action 'self'" }, "permissions": [ "storage", "tabs", "webRequest", "webNavigation", "notifications", "scripting", "userScripts" ], "host_permissions": [""], "optional_permissions": ["browsingData"], "short_name": "JShelter", "version": "0.19.1"}

Download CRX(440KiB)

Similar Extensions

LocalCDN Extension · Productivity 0 46 ★ 22.05MiB

Font Fingerprint Defender Extension · Productivity 0 20 ★ 37.82KiB

OptMeowt Extension · Productivity 0 6 ★ 3.57MiB

Browser Fingerprint Protector Extension · Productivity 0 14 ★ 11.82KiB

Ignore Google Scripts Extension · Productivity 0 3 ★ 18.68KiB

Decentraleyes Extension · Productivity 0 226 ★ 6.92MiB

CSS Exfil Protection Extension · Developer Tools 0 3 ★ 40.85KiB

Privacy Redirect Extension · Social & Communication 0 39 ★ 58.27KiB

Canvas Fingerprint Defender Extension · Productivity 0 64 ★ 38.49KiB

Trace - Online Tracking Protection Extension · Productivity 0 57 ★ 341KiB

Security Tweaks Extension · Productivity 0 3 ★ 3.07MiB

Canvas Blocker - Fingerprint Protect Extension · Developer Tools 0 40 ★ 59.76KiB

ClearURLs Extension · Productivity 0 205 ★ 829KiB

Privacy Settings Extension · Productivity 0 11 ★ 147KiB

Privacy Tweaks Extension · Productivity 0 11 ★ 2.75MiB

All Fingerprint Defender Extension · Productivity 0 35 ★ 67.0KiB

AudioContext Fingerprint Defender Extension · Productivity 0 13 ★ 38.51KiB

Canvas Blocker for Google Chrome™ Extension · Productivity 0 0 ★ 111KiB

WebAPI Blocker Extension · Productivity 0 8 ★ 58.61KiB

Origin Requests Only (Firewall) Extension · Productivity 0 12 ★ 102KiB

WebGL Fingerprint Defender Extension · Productivity 0 28 ★ 41.71KiB

Neat URL Extension · Productivity 0 44 ★ 60.0KiB

Privacy Guard & Manager Extension · Productivity 0 2 ★ 34.69KiB

Privacy Protector Plus Extension · Productivity 0 11 ★ 516KiB

User reviews

Jacob Griffin (ID: 0000004abe1992b4) Voted 4 ★ - Updated 08/03/2023 Pretty good extension. If you're a user that found NoScript to be a little too time consuming to get setup properly etc. I'd try this out. It's basically a "set it and forget it" form of NoScript that does all the blocking you need with no initial setup or tinkering, although you can still tinker AND there are plenty of settings to tinker with.

Arioch The (ID: 0000003350ad84da) Voted 2 ★ - Updated 05/14/2023 Unusable black hole. In the first 2 hours of using (Vivaldi 5.6.2867.62 on Win7-x64): 1. Kills reCaptcha service (until JS Shield prohibited - the very essense of the extension) 2. Kills DisQus service (until JS Shield prohibited - the very essense of the extension) 3. The bug reports page can not be found from the main site 4. When finally found - it requests you to create new account (logging in with OpenID/OAuth through other sites? no, not in 21 century) just for the privileger of laying 1-2 bug reports 5. When you do - it denies to ackknowledge the already xreated and activated account and instead goes infinite circles through HTTP login screens. Well... if that is how they bug-fixing page "works" and if it is how the casual browsing becomes just after 2 hours with this "www-killer feature" you may extrapolate how it would go further...

Çınar (ID: 000000d77065ef9e) Voted 5 ★ - Updated 04/26/2023 The best plugin i ever seen i liked the fingerprint option (sorry for bad eng)

•• (ID: 00000039624664e0) Voted 1 ★ - Updated 03/09/2023 It is causing high cpu and memory usage in some pages until freezing the system, both chrome and firefox and still not fixed. Could not recommend this extention with lot of bugs. https://pagure.io/JShelter/webextension/issues

Bérenger Lieber (ID: 0000002299406529) Voted 4 ★ - Updated 02/17/2023 Does the job. BUT annoyingly breaks login and forms for websites using reCAPTCHA. Guess we can't have both.

Get source code (.Zip)

Drop .crx file here or click
the button to choose the file

JShelter