Resource Hints: modulepreload

- LS

Using <link rel="modulepreload">, browsers can be informed to prefetch module scripts without having to execute them, allowing fine-grained control over when and how module resources are loaded.

IE

  1. 5.5 - 10
  2. 11

Edge

  1. 12 - 18
  2. 79 - 81
  3. 83

Firefox

  1. 2 - 75
  2. 76
  3. 77 - 78

Chrome

  1. 4 - 65
  2. 66 - 81
  3. 83
  4. 84 - 86

Safari

  1. 3.1 - 13
  2. 13.1
  3. TP

Opera

  1. 9 - 52
  2. 53 - 67
  3. 68

iOS Safari

  1. 3.2 - 13.3
  2. 13.4

Opera Mini

  1. all

Android Browser

  1. 2.1 - 4.4.4
  2. 81

Blackberry Browser

  1. 7
  2. 10

Opera Mobile

  1. 10 - 12.1
  2. 46

Chrome for Android

  1. 81

Firefox for Android

  1. 68

IE Mobile

  1. 10
  2. 11

UC Browser for Android

  1. 12.12

Samsung Internet

  1. 4 - 8.2
  2. 9.2 - 10.1
  3. 11.1

QQ Browser

  1. 10.4

Baidu Browser

  1. 7.12

KaiOS Browser

  1. 2.5

Unlike some other link relations, changing the relevant attributes (such as as, crossorigin, and referrerpolicy) of such a link does not trigger a new fetch. This is because the document's module map has already been populated by a previous fetch, and so re-fetching would be pointless.

Resources:
WebKit implementation bug
Gecko implementation bug
Preloading modules
Modern Script Loading