Resource Hints: preload

- CR

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

IE

  1. 5.5 - 10
  2. 11

Edge

  1. 12 - 16
  2. 17 - 18
  3. 79 - 81
  4. 83

Firefox

  1. 2 - 55
  2. 56
  3. 57 - 75
  4. 76
  5. 77 - 78

Chrome

  1. 4 - 49
  2. 50 - 81
  3. 83
  4. 84 - 86

Safari

  1. 3.1 - 10.1
  2. 11
  3. 11.1 - 13
  4. 13.1
  5. TP

Opera

  1. 9 - 36
  2. 37 - 67
  3. 68

iOS Safari

  1. 3.2 - 10.3
  2. 11
  3. 11.3 - 13.3
  4. 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
  2. 5 - 10.1
  3. 11.1

QQ Browser

  1. 10.4

Baidu Browser

  1. 7.12

KaiOS Browser

  1. 2.5

Firefox has newly rewritten their implementation and plans to enable it by default in a version closely succeeding 78

Resources:
Firefox support bug
MDN Web Docs - Preloading content with rel="preload"
Preload: What Is It Good For?