Twitter supports all standard emojis, and these can be inserted via emoji keyboard or picker. Alternatively emojis can be copy and pasted by choosing from the emojis on this page.
Twemoji is an open source emoji project, created and owned by Twitter. Emojis from Twemoji are found on the Twitter.com website, TweetDeck, Twitter for Android, Discord, Roblox and other apps. The native Twitter app for iOS uses native emojis provided by Apple.
In addition to these emojis, custom Twitter emojis (sometimes known as Hashflags) are enabled for some events or promotions. These only display on Twitter for a limited time, after specific hashtags.