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CSS Backdrop Filter

- UNOFF

Method of applying filter effects (like blur, grayscale or hue) to content/elements below the target element.

IE

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

Edge

  1. 12 - 16: Not supported
  2. 17 - 18: Supported
  3. 79 - 102: Supported
  4. 103: Supported

Firefox

  1. 2 - 69: Not supported
  2. 70 - 101: Disabled by default
  3. 102: Disabled by default
  4. 103 - 104: Supported

Chrome

  1. 4 - 46: Not supported
  2. 47 - 75: Disabled by default
  3. 76 - 102: Supported
  4. 103: Supported
  5. 104 - 106: Supported

Safari

  1. 3.1 - 8: Not supported
  2. 9 - 15.4: Supported
  3. 15.5: Supported
  4. 16.0 - TP: Supported

Opera

  1. 9 - 33: Not supported
  2. 34 - 63: Disabled by default
  3. 64 - 85: Supported
  4. 86: Supported
  5. 87: Supported

Safari on iOS

  1. 3.2 - 8.4: Not supported
  2. 9 - 15.4: Supported
  3. 15.5: Supported
  4. 16.0: Supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 103: Supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 64: Supported

Chrome for Android

  1. 103: Supported

Firefox for Android

  1. 101: Disabled by default

UC Browser for Android

  1. 12.12: Not supported

Samsung Internet

  1. 4: Not supported
  2. 5 - 11.2: Disabled by default
  3. 12.0 - 16.0: Supported
  4. 17.0: Supported

QQ Browser

  1. 10.4: Disabled by default

Baidu Browser

  1. 7.12: Disabled by default

KaiOS Browser

  1. 2.5: Not supported
Resources:
WebKit bug to unprefix `-webkit-backdrop-filter`
MDN Web Docs - CSS backdrop filter
Blog post