The new compatibility tables beta is now over and the new compatibility tables are now the default with the old compatibility tables being made obsolete.

See bugĀ 1493417 for details.

You're probably here because you followed the beta notice link from one of our new compatibility tables. (No? Want to see the new tables? Make yourself a beta tester.)

Thanks for helping us test these. They're part of a much larger project. We're moving all our browser compatibility data into structured JSON.

The new tables will appear on pages as the data is converted to the new format.


Our compat data has been moved into JSON files in the browser-compat-data GitHub repository.

To contribute compat data you can now submit a pull request or file an issue on the repository.

How to help

If you find a problem with the data please file an issue on the GitHub repository.

If something is wrong with the table's appearance or functionality, please click the "report an error" button in the drop down menu above the table.

If you have a moment, we'd appreciate it if you could take our survey.