Privacy Shield Firefox

Privacy Shield

By: Arthur
See what websites know about you. Detects fingerprinting, trackers, and manipulative UI tricks. Works offline, no data leaves your browser

Features & Capabilities

Browser extension that shows you what websites know about you. Detects fingerprinting, trackers, and dark patterns. 100% offline and private.

Fingerprint Detection 🔍

Detects 19+ fingerprinting techniques:

  • Canvas - Drawing patterns unique to your GPU
  • WebGL - GPU renderer and vendor info
  • Audio - AudioContext processing differences
  • Fonts - List of installed fonts
  • Screen - Resolution, color depth, pixel ratio
  • Navigator - User agent, language, platform
  • Hardware - CPU cores, device memory
  • WebRTC - Local IP address leaks
  • Timezone - Timezone offset fingerprinting
  • Plugins - Installed browser plugins
  • Battery - Battery status API
  • Client Rects - Element rendering differences
  • Speech - Available speech synthesis voices
  • Storage Estimate - Available storage detection
  • Media Devices - Connected media devices
  • Permissions - Granted permissions fingerprinting
  • CSS Media - Media query fingerprinting
  • Gamepad - Connected gamepads

Tracker Detection 📊

Identifies known trackers:

  • Google Analytics, Facebook Pixel, TikTok, etc.
  • Ad networks (Criteo, Taboola, DoubleClick)
  • Analytics services (Hotjar, Mixpanel, Segment)
  • Session replay tools
  • Social media widgets
  • Tracking cookies & URL parameters
  • Bounce trackers & beacon trackers

API Monitoring

Alerts when pages access:

  • Geolocation
  • Camera / Microphone
  • Clipboard (read/write)
  • Notifications
  • Local storage usage

Dark Patterns (16 categories)

Detects manipulative UI patterns:

  • Confirmshaming - Guilt-trip decline buttons
  • Visual Misdirection - Hidden/tiny reject buttons
  • Fake Urgency - Countdown timers, "only X left"
  • Pre-selection - Pre-checked marketing consent
  • Hidden Cost - Surprise fees at checkout
  • Cookie Banner Manipulation - Deceptive cookie dialogs
  • Obstruction - Hard to cancel/unsubscribe
  • Sneaking - Adding items to cart without consent
  • Trick Questions - Confusing double-negatives
  • Disguised Ads - Ads that look like content
  • Forced Continuity - Hard to cancel subscriptions
  • Nagging - Repeated popups and interruptions
  • Privacy Zuckering - Confusing privacy settings
  • Social Proof - Fake reviews/activity notifications
  • Roach Motel - Easy to sign up, hard to leave
  • Notification Spam - Excessive push notification requests

Privacy Score Each page gets a privacy score (0-100) and grade (A-F) based on:

  • Fingerprinting techniques detected
  • Number of trackers
  • Tracking cookies
  • Sensitive API access
  • Dark patterns found

Settings

  • Toggle individual detection modules
  • Sensitivity levels (low/medium/high)
  • Auto-scan on page load
  • Show badge count on icon
  • Notify on high-risk sites
  • Highlight detected elements on page
  • Whitelist trusted domains

Statistics

  • Total scans performed
  • Average privacy score
  • Total trackers/patterns detected
  • Worst and best sites list

Privacy

100% Offline & Private:

  • All detection happens in your browser
  • No data sent to external servers
  • No tracking, no analytics
  • No account required
  • Settings stored locally only
  • Open source

User Growth & Download Statistics

Manifest V3 Add-on
By:
Arthur
Daily users:
12 2
Rating:
5.00
(1)
Version:
1.0.0 Last updated: 2026-01-13
Version code:
6117576
Creation date:
2026-01-10
Risk:
Moderate risk impact Moderate risk likelihood
Permissions:
Host permissions:
  • <all_urls>
Content scripts matches:
  • <all_urls>
Size:
123.60KB
Email:
sh*****@developer.expert
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-04
Compare stats and ranking:

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:
Arthur
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/privacy-shield-ext/
Email:
sh*****@developer.expert
Website:
https://privacy-shield.developer.expert/

Is Privacy Shield 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.

Privacy Shield requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • 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.

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

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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