Web platform features explorer

Import maps

A <script type="importmap"> HTML element provides an import map as a JSON string. An import map controls how the browser should resolve module specifiers when importing JavaScript modules.

Status

Baseline Widely Available (since 2025-09-27)

MDN documentation

Specifications

Browser support (view on caniuse.com)

  • Chrome 89 Released on 2021-03-02
  • Chrome Android 89 Released on 2021-03-02
  • Edge 89 Released on 2021-03-04
  • Firefox 108 Released on 2022-12-13
  • Firefox for Android 108 Released on 2022-12-13
  • Safari 16.4 Released on 2023-03-27
  • Safari on iOS 16.4 Released on 2023-03-27

Usage (according to Chrome Platform Status)

~0.550% of page loads. More data at chromestatus.com.

Interop