Can I use
?

Shared Web Workers

- LS

Method of allowing multiple scripts to communicate with a single web worker.

Chrome

  1. ✅ 4 - 153: Supported
  2. ✅ 154: Supported
  3. ✅ 155 - 157: Supported

Edge

  1. ❌ 12 - 18: Not supported
  2. ✅ 79 - 153: Supported
  3. ✅ 154: Supported

Safari

  1. ❌ 3.1 - 4: Not supported
  2. ✅ 5 - 6: Supported
  3. ❌ 6.1 - 15.6: Not supported
  4. ✅ 16.0 - 26.6: Supported
  5. ✅ 27: Supported
  6. ✅ 27.1 - TP: Supported

Firefox

  1. ❌ 2 - 28: Not supported
  2. ✅ 29 - 155: Supported
  3. ✅ 156: Supported
  4. ✅ 157 - 159: Supported

Opera

  1. ❌ 9 - 10.5: Not supported
  2. ✅ 10.6 - 134: Supported
  3. ✅ 135: Supported

IE

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

Chrome for Android

  1. ✅ 154: Supported

Safari on iOS

  1. ❌ 3.2 - 4.3: Not supported
  2. ✅ 5 - 6.1: Supported
  3. ❌ 7 - 15.8: Not supported
  4. ✅ 16.0 - 26.6: Supported
  5. ✅ 27.0: Supported
  6. ✅ 27.1 - 27.2: Supported

Samsung Internet

  1. ✅ 4: Supported
  2. ❌ 5 - 29: Not supported
  3. ❌ 30: Not supported

Opera Mini

  1. ❌ all: Not supported

Opera Mobile

  1. ﹖ 10: Support unknown
  2. ✅ 11 - 12.1: Supported
  3. ❌ 80: Not supported

UC Browser for Android

  1. ❌ 15.5: Not supported

Android Browser

  1. ❌ 2.1 - 4.4.4: Not supported
  2. ✅ 154: Supported

Firefox for Android

  1. ✅ 156: Supported

QQ Browser

  1. ❌ 14.9: Not supported

Baidu Browser

  1. ❌ 13.52: Not supported

KaiOS Browser

  1. ✅ 2.5: Supported
  2. ✅ 3: Supported
Resources:
MDN article about SharedWorker
Blog post
Sitepoint article