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High-quality kerning pairs & ligatures

- UNOFF

When used in HTML, the unofficial text-rendering: optimizeLegibility CSS property enables high-quality kerning and ligatures in certain browsers. Newer browsers have this behavior enabled by default.

Chrome

  1. ✅ 4 - 149: Supported
  2. ✅ 150: Supported
  3. ✅ 151 - 153: Supported

Edge

  1. ❌ 12 - 17: Not supported
  2. ✅ 18 - 149: Supported
  3. ✅ 150: Supported

Safari

  1. ❌ 3.1 - 4: Not supported
  2. ✅ 5 - 26.3: Supported
  3. ✅ 26.4: Supported
  4. ✅ 26.5 - TP: Supported

Firefox

  1. ❌ 2: Not supported
  2. ✅ 3 - 151: Supported
  3. ✅ 152: Supported
  4. ✅ 153 - 155: Supported

Opera

  1. ❌ 9 - 12.1: Not supported
  2. ✅ 15 - 127: Supported
  3. ✅ 131: Supported

IE

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

Chrome for Android

  1. ✅ 149: Supported

Safari on iOS

  1. ﹖ 3.2 - 4.1: Support unknown
  2. ✅ 4.2 - 26.3: Supported
  3. ✅ 26.4: Supported
  4. ✅ 26.5: Supported

Samsung Internet

  1. ✅ 4 - 29: Supported
  2. ✅ 30: 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 - 2.3: Not supported
  2. ◐ 3 - 4.3: Partial support
  3. ✅ 4.4 - 4.4.4: Supported
  4. ✅ 149: Supported

Firefox for Android

  1. ✅ 152: Supported

QQ Browser

  1. ✅ 14.9: Supported

Baidu Browser

  1. ✅ 13.52: Supported

KaiOS Browser

  1. ✅ 2.5: Supported
  2. ✅ 3: Supported

The text-rendering property is specified in SVG, though behavior there is not related to kerning pairs & ligatures.

Resources:
CSS Tricks article
MDN Web Docs - CSS text-rendering