Browser requirements

In general, websites built using only the Drupal core (i.e., without contributed modules) are compatible with all modern browsers that support CSS and JavaScript (with minor visual differences) and are fully functional in them. Drupal only guarantees support for a list of supported browsers.

Supported Browsers

The latest release of each of the two most recent supported major versions:
Desktop browsers:

• Google Chrome
• Firefox
• Safari
• Microsoft Edge
• Opera

Mobile browsers:

• Safari for iOS

The latest supported version of the most recent major version:

Desktop browsers:

• Firefox ESR
• Internet Explorer

Mobile browsers:

• Chrome for Android
• Chrome for iOS
• UC Browser
• Opera Mini
• Samsung Internet

Browser Support Policy

Drupal accepts bug reports for supported browsers.

Contributors manually test major changes in several browsers to monitor regressions, but this is partially dependent on available contributors and the specific issue. We do not yet have full automated browser testing for our supported browsers.
By default, Drupal core does not accept bug fixes for unsupported browsers. Committers and the security team will assess risk on a case-by-case basis and make exceptions when needed.

Drupal may begin using any browser feature if all supported browsers have built-in support or a polyfill is provided. With each major release, polyfills that are no longer needed (because all supported browsers now support the feature natively) will be removed.

Contributed Modules

Some contributed modules and themes may not be compatible with all browsers. If you find a browser compatibility issue in a contributed module or theme, or with certain features in a contributed module that do not work at all without JavaScript enabled, please file an issue to report it to the module or theme maintainer.