How to use
My custom emoji packs should work on any platform that supports using custom images as emojis or stickers. Below are instructions for just some of these platforms.
Pleroma, Akkoma
Pleroma, Akkoma and possibly other forks provide a command line utility to browse and import emoji packs: https://docs.pleroma.social/backend/administration/CLI_tasks/emoji/
The required manifest for my emojis is located at https://volpeon.ink/emojis/pleroma.json.
Pass this URL as manifest parameter.
Misskey, Firefish, Sharkey, Iceshrimp
Open the section "Custom Emoji" in the Control Panel. There, open the three-dot-menu and click "Import." Select the emoji pack's ZIP file.
Note that the Control Panel is only available if you have permission to manage custom emojis.
GoToSocial
While GoToSocial doesn't have direct support for emoji packs or even bulk uploads in the UI, you can leverage the API to easily upload many emojis at once.
Here's a Bash script by Kianga to do so.
FluffyChat
Go to "Settings" → "Chat" → "Custom emotes and stickers". There, open the three-dot-menu and choose "Import from zip file". Select the emoji pack's ZIP file.