Compat Report

Name: Compat Report
Rating: 4.6429 (28 reviews)
Author: Eduardo Bouças

By: Eduardo Bouças

Shows a report of browser compatibility issues using data from MDN

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Features & Capabilities

Compat Report is a Chrome extension designed to help developers identify browser compatibility issues quickly and efficiently. Using comprehensive data from MDN (Mozilla Developer Network), it generates detailed reports highlighting features and APIs that may not work consistently across all browsers. This tool streamlines the debugging process, saving time and improving user experience by ensuring web applications are robust and accessible on diverse browsing platforms.

Whether you are a frontend developer, QA tester, or web designer, Compat Report is an essential utility for maintaining compatibility standards. Its seamless integration into the browser environment allows for on-the-fly analysis without disrupting your workflow.

User Growth & Download Statistics

Add-on Developer Tools

By:

Daily users:

Rating:

Version:

0.1.1resigned1 Last updated: 2024-04-25

Version code:

5729602

Creation date:

2017-12-09

Risk:

Permissions:

<all_urls>
tabs
webNavigation

Size:

329.56KB

Email:

ma*****@eduardoboucas.com

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-05

Compare stats and ranking:

Ranking

# 5,635 ▼ 57

Other rankings

#213 in compare keyword 13 ▼ 5

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:

Eduardo Bouças

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/compat-report/

Email:

ma*****@eduardoboucas.com

User Reviews

Users find Compat Report a valuable tool for checking browser compatibility and understanding required polyfills, appreciating its convenient and clear information. However, multiple reviews highlight performance issues like lag and freezing, lack of dark mode support, and interface clunkiness such as full tab reloads when toggling stylesheets. Users also desire filtering features to improve browsing compatibility problems. Overall, while the add-on concept is praised, improvements are needed for smoother and more user-friendly operation.

Pros

Provides clear compatibility information for websites across different browsers.
Helps identify necessary polyfills for modern CSS/JavaScript usage.
Better and more convenient than manually checking compatibility websites.
Concept and functionality are appreciated and considered valuable by users.
Generally works pretty well despite some clunkiness.

Cons

Lags and freezes frequently, affecting usability.
No support for dark mode; interface is white and clashes with dark themes.
Turning off stylesheets causes entire tab to reload, not just compatibility section, making interaction clunky.
Lacks filtering options to easily browse compatibility issues.

Recent reviews

good

by hg*****, 2025-08-21

vary good app

by ja*****, 2025-08-21

by 退出*****, 2025-03-24

View all user reviews ›

Is Compat Report 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.

Compat Report requires some sensitive permissions that could impact your browser and data security. 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.
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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.

Compat Report has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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