Bug reporting
for the internet.

Report bug

How It Works


Report a bug for any website or browser.


Our team of volunteers diagnoses the bug.


We send a fix to the site owner or browser.

Latest Untriaged Issues

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Help Us Improve the Web

Webcompat.com is a gathering place for the web compatibility community. This site is a place to report bugs from any website across the web - whether you are a developer or not. Started by the Mozilla Web Compatibility team, this initiative is a global task force on a mission to improve the web one bug at a time. Join us! Let's work together to make the web a better place to work and play. Learn more about how to contribute.

Three Ways to Contribute \o/

Report bugs

Bug Reporting

Report compatibility issues that you come across on the web.

Report bugs
Diagnose bugs

Bug Diagnosis

Figure out what is causing the issue and help to find a fix.

Diagnose bugs
Reach out to sites

Site Outreach

Locate a contact and reach out to sites to help solve the issue.

Reach out to sites


Thanks to BrowserStack for providing the infrastructure that allows us to test in real browsers.