emojicon

Tiny vanilla JS drop-in that turns emoji in page text into text emoticons / kaomoji.

<script src="emojicon.js" defer></script>

It runs on load and watches for new text incase of ajax/SPA.

• Replaces mapped emoji in text nodes ((^_^), <3, ᕙ(≧▽≦)ᕗ, etc.)
• Leaves unmapped emoji alone
• Skips script, style, noscript, form fields, contenteditable, and code-ish tags (code, pre, kbd, samp)

Emoji are taken from Unicode's official emoji test data:

https://unicode.org/Public/emoji/latest/emoji-test.txt

emojicon.run();           // whole body
emojicon.run(someElement) // one subtree

Open demo.html in a browser.