Can I use
?

CSS Canvas Drawings

- UNOFF

Method of using HTML5 Canvas as a background image. Not currently part of any specification.

Chrome

  1. ✅ 4 - 47: Supported
  2. ❌ 48 - 135: Not supported
  3. ❌ 136: Not supported
  4. ❌ 137 - 139: Not supported

Edge

  1. ❌ 12 - 135: Not supported
  2. ❌ 136: Not supported

Safari

  1. ❌ 3.1 - 3.2: Not supported
  2. ✅ 4 - 18.4: Supported
  3. ✅ 18.5: Supported
  4. ✅ TP: Supported

Firefox

  1. ❌ 2 - 137: Not supported
  2. ❌ 138: Not supported
  3. ❌ 139 - 141: Not supported

Opera

  1. ❌ 9 - 12.1: Not supported
  2. ✅ 15 - 34: Supported
  3. ❌ 35 - 116: Not supported
  4. ❌ 117: Not supported

IE

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

Chrome for Android

  1. ❌ 136: Not supported

Safari on iOS

  1. ✅ 3.2 - 18.4: Supported
  2. ✅ 18.5: Supported

Samsung Internet

  1. ✅ 4: Supported
  2. ❌ 5 - 26: Not supported
  3. ❌ 27: Not supported

Opera Mini

  1. ❌ all: Not supported

Opera Mobile

  1. ❌ 10 - 12.1: Not supported
  2. ❌ 80: Not supported

UC Browser for Android

  1. ❌ 15.5: Not supported

Android Browser

  1. ✅ 2.1 - 4.4.4: Supported
  2. ❌ 136: Not supported

Firefox for Android

  1. ❌ 137: Not supported

QQ Browser

  1. ❌ 14.9: Not supported

Baidu Browser

  1. ❌ 13.52: Not supported

KaiOS Browser

  1. ❌ 2.5: Not supported
  2. ❌ 3: Not supported

A similar effect can be achieved in Firefox 4+ using the -moz-element() background property

Resources:
WebKit blog post