Limited Availability

Multiple import maps

Multiple <script type="importmap"> HTML elements merge to produce the overall import map.

Baseline Status: This feature is currently Limited (not yet Baseline). Latest engine implementation shipped on Mar 31, 2025.

Desktop Browser Engine Support

Google Chrome

133

Supported

Mozilla Firefox

—

Unsupported

Apple Safari

18.4

Supported

Microsoft Edge

133

Supported

Mobile Browser Engine Support

Chrome Android

133

Firefox Android

—

Safari iOS

18.4

Specifications and References

MDN Browser Compat Data Keys: