Emoji by Saverio Morelli (Sav22999)

📢 For dated versions of Firefox:
If you see an empty screen after the update, and you want to use "Twemoji", please don't use "Twemoji (Recommended)", instead use the font "Twemoji (temporary fix)" (you will not be able to see the new emojis in Unicode 14) or another font-family

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It's an open-source project which permits you to copy and insert easily an emoji – you can enable "Also insert directly the emoji" which will insert directly the emoji in the active element of the page.
You can search by keywords or use the "most used emojis". Or just looking for the perfect emoji navigating in the sections.

https://www.emojiaddon.com

You can customise the add-on, in fact you can enable or disable various options, which make the add-on personal and unique!

You can use the shortcut: Ctrl+Alt+A on Windows and Linux and Cmd+Option+A on macOS (you can customise this in Settings).

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Some information about fonts used in the app:
- The main font and, in my opinion, the most beautiful one is Twemoji, developed by Twitter. You can read more about it for free (it's also open-source!) here: https://twemoji.twitter.com/

- OpenMoji, which is my second favourite emoji-font. Read more here: https://openmoji.org/

- Noto sans, by Google. Read more here: https://www.google.com/get/noto/help/emoji/

Other fonts, like "OS emoji font" depends by your OS settings, so you should see them licences.