LeakLens - Privacy Inspector Firefox

LeakLens - Privacy Inspector

By: POLPROG
Inspect trackers, cookies, fingerprinting, WebRTC leaks, permissions and security headers locally in your browser.

Features & Capabilities

LeakLens is a privacy inspector that shows what data websites can access and what privacy risks appear while you browse. Analyze trackers, cookies, fingerprinting attempts, WebRTC and network leaks, security headers, permissions, redirects, and URL tracking parameters directly in the browser.

🔍 REAL-TIME PRIVACY AUDIT

• See a privacy score from 0 to 100 and a risk grade from A to F for the active website • Review trackers, cookies, fingerprinting signals, security headers, and permission activity in one view • Follow a timeline of privacy-relevant events for each domain

🛡 TRANSPARENT TRACKER BLOCKING

• Block trackers in Balanced, Strict, or Custom mode • See which rule matched and why a request was blocked • Manage domain-level rules and editable tracker lists without external connections

🔐 FINGERPRINTING DETECTION

• Detect Canvas, WebGL, Audio, and WebRTC fingerprinting attempts in real time • Use Detect, Prompt, or Mitigate modes depending on how much control you want • Review per-signal counters and last-seen timestamps

🧹 URL AND REDIRECT CLEANER

• Remove UTM, gclid, fbclid, and other tracking parameters from URLs • Edit the parameter list to match your own privacy preferences • Clean redirects and navigation events quietly in the background

🌐 WEBRTC AND NETWORK LEAK SHIELD

• Help prevent WebRTC IP leaks by controlling browser IP handling behavior • Detect and block requests to private IP ranges • Review TLS and certificate details where the browser platform allows it

⏱ TEMPORARY PERMISSIONS

• Grant geolocation, camera, microphone, or notifications only for a limited time • Use Allow once, 10 minutes, 1 hour, or Always • Automatically revoke temporary permission grants when the timer expires

🔒 SECURITY HEADERS AND SESSION CONTROL

• Analyze HSTS, CSP, Permissions-Policy, X-Frame-Options, and related headers • Use a Security Posture Score from 0 to 100 with actionable recommendations • Isolate tab sessions and manage cookies per domain

📌 PANEL, OVERLAY AND QUICK ACTIONS

• Use a clean popup with tabbed navigation and live scores • Pin a draggable overlay on supported pages while browsing • Run quick actions from the context menu, including inspect, shield, clear data, and open in isolation

🧠 UNDERSTAND WHAT SITES SHARE

Make trackers, cookies, fingerprint scripts, URL tracking parameters, security headers, permissions, and network leaks visible in one focused interface.

Explainable results help you understand what happened, why it matters, and what action you can take.

🔒 PRIVACY FIRST

The extension does not collect personal data, track browsing behavior, run analytics or profiling, or contact external servers.

Domain rules, event logs, and settings are stored locally in the browser and remain on the device.

🏢 ABOUT THE AUTHOR

LeakLens is developed by POLPROG, a Polish technology company creating browser extensions, web applications, and mobile apps with a focus on privacy.

Website: https://polprog.pl/ LeakLens product page: View product page Browser version: View in Chrome Web Store

User Growth & Download Statistics

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
POLPROG
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/leaklens/
Email:
co*****@polprog.pl
Website:
https://polprog.pl/

Publisher Change History

2026-07-01: po*****@gmail.com to co*****@polprog.pl

Upgrade to see full email

Permission Change History

2026-03-10: Version 1.3.0 → 1.4.0
Add Permissions: webRequestBlocking
2026-03-09: Version 1.1.0 → 1.3.0
Remove Permissions: scripting
Remove Optional permissions: webNavigation

Is LeakLens - Privacy Inspector Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

LeakLens - Privacy Inspector 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.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
  • High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
  • High *** ****** ******* ********* ***** ** ******** *** ********** **** ********
  • Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

LeakLens - Privacy Inspector may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details
  • High This extension has recently changed publisher email (might be a transfer in ownership)
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Extension Guard
Extension Guard

Discover every extension in use, analyze risks, and enforce blocking policies with Extension Guard

Secure Your Browser
Upgrade to see full risk analysis details

Best LeakLens - Privacy Inspector Alternatives

Here are some Firefox add-ons that are similar to LeakLens - Privacy Inspector: