Code Verify

Name: Code Verify
Rating: 3.2222 (27 reviews)
Author: Meta Extensions

By: Meta Extensions

An extension to verify the code running in your browser matches what was published.

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Features & Capabilities

Code Verify is an open-source browser extension designed to verify that the code running in your web browser matches the published, authentic version for apps like WhatsApp, Facebook, Instagram, and Messenger. It offers security-conscious users peace of mind by alerting them immediately if the web client has been modified or is inauthentic.

The extension works by scanning the Javascript code served to your browser and comparing it to a publicly posted "source of truth" hosted on Cloudflare. By bringing mobile app security verification protocols to the web environment, Code Verify helps prevent bad actors from serving altered versions aiming to compromise user privacy or security. Being open source, it fosters transparency and encourages broader adoption of web binary transparency for other web apps. With continuous updates and independent verification, this extension is a significant step forward for online security and privacy.

User Growth & Download Statistics

Add-on Privacy & Security Developer Tools

By:

Daily users:

Rating:

Version:

4.1.0 Last updated: 2025-09-17

Version code:

6036196

Creation date:

2022-02-18

Risk:

Permissions:

webRequest
storage
https://*.privacy-auditability.cloudflare.com/*
https://static.xx.fbcdn.net/
https://static.cdninstagram.com/
https://static.whatsapp.net/
*://*.messenger.com/*
*://*.facebook.com/*
*://*.instagram.com/*
*://*.whatsapp.com/*

Content scripts matches:

*.messenger.com
*.facebook.com
*.instagram.com
*.whatsapp.com

Size:

171.05KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-15

Compare stats and ranking:

Ranking

# 3,882 ▼ 37

Other rankings

#8 in code keyword 41

#15 in codes keyword 47

#15 in qr code keyword 59

#24 in coding keyword 6 ▼ 1

#35 in publish keyword 5

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Other platforms

Code Verify (v4.1.0)

30,000 2.20

(35)

Code Verify (v4.1.0)

7,791 3.40

(7)

For Developers

Monetize with App Pass Boost with Extension Booster

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:

Meta Extensions

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/code-verify/

Permission Change History

2025-09-17: Version 4.0.0 → 4.1.0

Add Permissions: storage

2024-03-18: Version 3.4.0 → 3.5.0

Add Permissions: https://static.whatsapp.net/

2024-02-05: Version 3.3.0 → 3.4.0

Add Permissions: https://*.privacy-auditability.cloudflare.com/*

Remove Permissions: https://*.privacy-auditability.cloudflare.com/

2023-07-19: Version 3.0.0 → 3.1.0

Add Permissions: https://static.cdninstagram.com/

2023-06-14: Version 2.1.1 → 3.0.0

Add Permissions: *://*.instagram.com/*

2023-04-07: Version 2.0.1 → 2.1.1

Add Permissions: *://*.messenger.com/* *://*.facebook.com/* *://*.whatsapp.com/*

Remove Permissions: https://web.whatsapp.com/ tabs

2022-08-04: Version 1.0.2 → 2.0.1

Add Permissions: tabs webRequest https://static.xx.fbcdn.net/

User Reviews

Across multiple reviews, the only recurring concern is inconsistent access to the source code: it isn't linked or the page's source code doesn't match what’s sent to other users. Other issues (UI toolbar visibility, greying on messenger.com, WhatsApp Web breakage, and Facebook performance slowdowns) are mentioned only in single reviews. A few users report functional use on some sites, while others report problems.

Pros

Cons

Source code is not linked or mismatched across listings (inconsistent source code)

Recent reviews

by ar*****, 2026-01-23

by Sa*****, 2026-01-13

by je*****, 2025-08-09

View all user reviews ›

Is Code Verify 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.

Code Verify requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Request access to the following domains: cloudflare.com, fbcdn.net, cdninstagram.com, whatsapp.net, messenger.com, facebook.com, instagram.com, whatsapp.com
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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.

Code Verify 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.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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