# SYNTEX Privacy Shield

> Blocks trackers and strips browser fingerprinting headers so websites can't identify or profile you. Runs entirely in your browser. No data leaves your device. Free forever. Donations welcome.

Canonical page: [https://chrome-stats.com/d/syntex\_privacy\_shield](https://chrome-stats.com/d/syntex_privacy_shield)

## Overview

- **ID:** `syntex_privacy_shield`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** SYNTEX Security
- **Category:** privacy-security
- **Daily users:** 1
- **Version:** 4.0.0
- **Last updated:** 2026-04-17
- **First published:** 2025-11-08
- **Size:** 42 KB
- **Data as of:** 2026-09-14
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/syntex_privacy_shield/)
- **Website:** [https://www.syntexsecurity.com](https://www.syntexsecurity.com/)

## Description

SYNTEX Privacy Shield v4.0 — rebuilt from the ground up.

WHAT IT DOES                                              

Tracker Blocking                                        
Blocks outright requests to known analytics and surveillance infrastructure:
Google Analytics, Facebook Pixel, DoubleClick, Hotjar, Segment, Amplitude,  
Mixpanel, FullStory, Intercom, LinkedIn Insights, Criteo, and more.
<ul><li>Fingerprint Header Stripping                              </li><li>Removes the browser fingerprinting headers sites use to identify you across</li><li>sessions — the entire sec-ch-ua-* family, x-client-data, sec-gpc, and others —</li><li>before they leave your device.</li><li>Traffic Pattern Obfuscation                                                   </li><li>Randomizes Accept-Language and Accept-Encoding values and shuffles header order on   every request. Disrupts behavioral fingerprinting that tracks you by how your browser talks, not just what it says.                                </li></ul>
No fake data injection, no promises about being "undetectable," no premium tier. Privacy tools that over claim are security liabilities. This does what it says, nothing more.                                                          

PRIVACY                                                                     
No telemetry. No analytics. No data collection. Everything runs locally in your browser. Source available at <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/fd449290431e3250dc9eaf5a7cacfb452b744244e446963b68ab12fbbb81414f/http%3A//codeberg.org/SYNTEX/firefox_privacy_shield" rel="nofollow">codeberg.org/SYNTEX/firefox_privacy_shield</a>.                  

SUPPORT
Free forever. If it's useful, donations keep development going — button is in 
the extension popup.                                                         

Works on Firefox desktop and Firefox for Android.

## Rankings

- #116,334 — Overall
- #207 — data privacy
- #230 — privacy

## Permissions and access

### Permissions

- `storage`
- `webRequest`
- `webRequestBlocking`
- `activeTab`
- `alarms`
- `tabs`

### Host permissions

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/syntex_privacy_shield)