Can I use
?

Push API

- WD

API to allow messages to be pushed from a server to a browser, even when the site isn't focused or even open in the browser.

Chrome

  1. ❌ 4 - 43: Not supported
  2. ◐ 44 - 49: Partial support
  3. ✅ 50 - 134: Supported
  4. ✅ 135: Supported
  5. ✅ 136 - 138: Supported

Edge

  1. ❌ 12 - 16: Not supported
  2. ✅ 17 - 18: Supported
  3. ✅ 79 - 134: Supported
  4. ✅ 135: Supported

Safari

  1. ❌ 3.1 - 6.1: Not supported
  2. ❌ 7 - 16.0: Not supported
  3. ◐ 16.1 - 17.6: Partial support
  4. ✅ 18.0 - 18.3: Supported
  5. ✅ 18.4: Supported
  6. ✅ 18.5 - TP: Supported

Firefox

  1. ❌ 2 - 43: Not supported
  2. ✅ 44: Supported
  3. ✅ 45: Supported
  4. ✅ 46 - 51: Supported
  5. ✅ 52: Supported
  6. ✅ 53 - 59: Supported
  7. ✅ 60: Supported
  8. ✅ 61 - 136: Supported
  9. ✅ 137: Supported
  10. ✅ 138 - 140: Supported

Opera

  1. ❌ 9 - 36: Not supported
  2. ﹖ 37 - 41: Support unknown
  3. ✅ 42 - 116: Supported
  4. ✅ 117: Supported

IE

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

Chrome for Android

  1. ✅ 135: Supported

Safari on iOS

  1. ❌ 3.2 - 16.3: Not supported
  2. ◐ 16.4 - 18.3: Partial support
  3. ◐ 18.4: Partial support
  4. ◐ 18.5: Partial support

Samsung Internet

  1. ✅ 4 - 26: Supported
  2. ✅ 27: Supported

Opera Mini

  1. ❌ all: Not supported

Opera Mobile

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

UC Browser for Android

  1. ✅ 15.5: Supported

Android Browser

  1. ❌ 2.1 - 4.4.4: Not supported
  2. ❌ 135: Not supported

Firefox for Android

  1. ✅ 137: Supported

QQ Browser

  1. ✅ 14.9: Supported

Baidu Browser

  1. ❌ 13.52: Not supported

KaiOS Browser

  1. ✅ 2.5: Supported
  2. ✅ 3: Supported
Resources:
MDN Web Docs - Push API
Google Developers article