Document Policy

- UNOFF

A mechanism that allows developers to set certain rules and policies for a given site. The rules can change default browser behaviour, limit the use of certain features or limit how many resources the website can use. Document Policy is useful both for security and performance, and is similar to Permissions Policy.

IE

  1. 5.5 - 10: Not supported
  2. 11: Not supported

Edge

  1. 12 - 83: Not supported
  2. 84: Not supported

Firefox

  1. 2 - 78: Not supported
  2. 79: Not supported
  3. 80 - 81: Not supported

Chrome

  1. 4 - 83: Not supported
  2. 84: Not supported
  3. 85 - 87: Not supported

Safari

  1. 3.1 - 13: Not supported
  2. 13.1: Not supported
  3. 14 - TP: Not supported

Opera

  1. 9 - 68: Not supported
  2. 69: Not supported

iOS Safari

  1. 3.2 - 13.3: Not supported
  2. 13.4: Not supported
  3. 14.0: Not supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 81: Not supported

Blackberry Browser

  1. 7: Not supported
  2. 10: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 46: Not supported

Chrome for Android

  1. 84: Not supported

Firefox for Android

  1. 68: Not supported

IE Mobile

  1. 10: Not supported
  2. 11: Not supported

UC Browser for Android

  1. 12.12: Not supported

Samsung Internet

  1. 4 - 11.2: Not supported
  2. 12.0: Not supported

QQ Browser

  1. 10.4: Not supported

Baidu Browser

  1. 7.12: Not supported

KaiOS Browser

  1. 2.5: Not supported

Standard support includes the HTTP Document-Policy header and policy attribute on iframes.

Resources:
W3C - Document Policy Explainer
Firefox position: non-harmful