Baseline Features

As part of the Best Practices suite of audits in Lighthouse, DevTools tells you the Baseline status of features used on the current page.

The Baseline Features Lighthouse audit showing all the web feature IDs detected on page along with their current Baseline status.

This is a diagnostic audit

This audit provides the following information:

• The web feature ID (from the web-features package), linked to the web feature ID's entry on webstatus.dev.
• The Baseline status, either Limited availability, Newly available, or Widely available.
• Where one occurrence of the feature's usage was found in the site's source code.

The audit also gives you information about web features used in third-party scripts, and any active extensions.

Resources

• Source code for the Baseline Features audit
• Baseline on the WebDX Community Group site
• Baseline on web.dev