Custom Emojis for Slack and Discord

Q: How do I get an emoji from Emojify into Slack?

Generate the emoji, tap Save to add it to Photos (or Copy for the clipboard), then in Slack go to your workspace's Customize / Add emoji screen, upload the image, and give it a :name:. Slack scales it down automatically.

Q: What are the upload requirements?

Slack wants square images up to 128×128 (it resizes larger uploads) under 128KB; Discord custom emojis are capped at 256KB and also display tiny. Both accept PNG. Bold, simple designs survive the shrink best.

Q: Who can add custom emojis?

In Slack, any member unless admins restrict it. In Discord, you need the Manage Expressions permission on that server, and the server's emoji slots depend on its boost level.

Every good Slack workspace has one: the custom emoji that says exactly what “:thumbsup:” can't. The bottleneck was always making the image. Now the image takes one sentence.

The pipeline: prompt → PNG → :party_croissant:

Generate. Describe the emoji your team needs — “ship with party hat”, “on-fire deadline calendar” — and let Emojify render it. Simple, bold prompts work best here (see the shrink test below).
Export. On the emoji's detail screen, tap Save to drop a PNG into Photos — or Copy if you're pasting straight into a desktop upload via AirDrop/Universal Clipboard.
Upload to Slack: workspace name → Customize workspace → Add custom emoji → upload, then name it :like_this:. Slack resizes automatically.
Upload to Discord: Server Settings → Emoji → Upload Emoji (needs the Manage Expressions permission; slot count depends on the server's boost level).

The shrink test

Workspace emojis display at roughly 20–32 pixels — postage-stamp scale. Before uploading, zoom your Photos thumbnail way out: if you can still tell what it is, it'll work. Designs that survive shrinking share three traits: one subject, strong silhouette, high contrast. “Heart-shaped pizza” reads at 20px; “detailed office scene with five coworkers” becomes noise.

Emojis teams actually use

Process reactions: shipped-it rocket variants, code-review magnifying glass, the on-call fire extinguisher.
Team in-jokes: the standup phrase, the legendary typo, the product mascot doing things.
Status shorthand: “in a meeting” coffee cup, “heads-down” headphones bear, “Friday brain” melting ice cream.
Celebrations: launch-day croissants, anniversary donuts — generated the morning of, in seconds.

Workspace etiquette: custom emojis are shared space — name them predictably (:team_ship:, not :img_2847:), and when a joke retires, delete its emoji. A curated emoji list is the Slack equivalent of a clean kitchen.

Your workspace's next legend

Generate it, save the PNG, upload it — done before standup. Free on iPhone.

Download on the App Store

FAQ

How do I get an emoji from Emojify into Slack?

Save it as a PNG, then upload via Customize workspace → Add custom emoji and give it a :name:.

What are the upload requirements?

PNG works everywhere; Slack resizes to 128×128, Discord caps files at 256KB. Bold designs survive the tiny display.

Who can add custom emojis?

Slack: any member unless restricted. Discord: whoever holds Manage Expressions on that server.