Can I use
?

HTML templates

- LS

Method of declaring a portion of reusable markup that is parsed but not rendered until cloned.

Chrome

  1. 4 - 25: Not supported
  2. 26 - 34: Partial support
  3. 35 - 116: Supported
  4. 117: Supported
  5. 118 - 120: Supported

Edge

  1. 12: Not supported
  2. 13 - 14: Partial support
  3. 15 - 116: Supported
  4. 117: Supported

Safari

  1. 3.1 - 6: Not supported
  2. 6.1: Not supported
  3. 7: Not supported
  4. 7.1 - 8: Partial support
  5. 9 - 16.5: Supported
  6. 16.6: Supported
  7. 17.0 - TP: Supported

Firefox

  1. 2 - 21: Not supported
  2. 22 - 116: Supported
  3. 117: Supported
  4. 118 - 120: Supported

Opera

  1. 9 - 12.1: Not supported
  2. 15 - 21: Partial support
  3. 22 - 101: Supported
  4. 102: Supported

IE

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

Chrome for Android

  1. 117: Supported

Safari on iOS

  1. 3.2 - 7.1: Not supported
  2. 8 - 8.4: Partial support
  3. 9 - 16.6: Supported
  4. 17.0: Supported
  5. 17.1: Supported

Samsung Internet

  1. 4 - 21: Supported
  2. 22: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 73: Supported

UC Browser for Android

  1. 15.5: Supported

Android Browser

  1. 2.1 - 4.3: Not supported
  2. 4.4 - 4.4.4: Supported
  3. 117: Supported

Firefox for Android

  1. 117: Supported

QQ Browser

  1. 13.1: Supported

Baidu Browser

  1. 13.18: Supported

KaiOS Browser

  1. 2.5: Supported
  2. 3: Supported
Resources:
Template element on MDN
Polyfill script
web.dev - HTML's New template Tag