YilunaiMessage stickers
iMessage sticker maker: App Store spec artwork, no design tool
Apple's sticker spec is strict about points and pixels: medium stickers are 408×408 pixels, large ones 618×618, and every file must stay under 500KB with transparency intact. The exporter renders both sizes straight from your canvas, compressed in passes until they fit.
iMessage stickers ship inside an app — Apple's own sticker-pack template in Xcode needs no code, just correctly sized artwork, which is exactly what this download gives you.
Make a iMessage sticker nowThe exact iMessage spec
| File | Format | Size | Limit |
|---|---|---|---|
| Medium sticker PNG | PNG | 408×408 | 500KB |
| Large sticker PNG | PNG | 618×618 | 500KB |
| Animated sticker GIF | GIF | 408×408 | 500KB |
How to publish on iMessage
- Design the sticker. AI-generate, upload, or pick a template. iMessage peels stickers off with a lift effect, so clean edges matter — transparent backgrounds are the norm.
- Export both sizes. One click renders the medium 408×408 and large 618×618 PNGs plus an animated GIF, each under Apple's 500KB limit.
- Drop them into Xcode. Create a Sticker Pack App project, drag the PNGs into the sticker asset catalog, set the size class, and run it on your phone — no code required.
Questions
What size are iMessage stickers?
Three size classes: small 300×300, medium 408×408 and large 618×618 pixels (100/136/206 points at @3x). Every sticker must be a PNG, APNG, GIF or JPEG under 500KB.
Do I need a Mac to publish iMessage stickers?
To put a pack on the App Store, yes — sticker packs are apps, and the simplest route is Xcode's no-code sticker pack template. The artwork itself is made here, in your browser.
Can iMessage stickers be animated?
Yes — Apple accepts animated GIF and APNG stickers under the same 500KB limit. Export the animated GIF from any motion preset here.