What to do when a Discord emoji exceeds 256KB

Discord custom emoji have a file size limit, and going over it means the upload is rejected. Here is what PochiSta exports for Discord.

Even at a small 128×128px, it is easy to blow past the limit. There are three main causes.

• Too many colors: photos and gradients defeat PNG compression
• Animation: you are storing one image per frame, so it is several times the size of a static emote
• The source image is too big: a high-resolution photo keeps a lot of detail even after downscaling, which stays expensive

Work down this list — the earlier items have the bigger effect.

1. Reduce the number of colors

   PNG drops sharply in size when you use fewer colors. For simple artwork like text with an outline, the result looks essentially identical.

2. Do not use gradients

   Flat fills compress extremely well, and at emoji size a gradient is barely visible, so there is little to lose.

3. Use fewer animation frames

   The motion gets less smooth, but this is the single biggest saving. Raising the playback speed keeps it convincing with fewer frames.

4. Lower the effect intensity

   The wider the shake or rotation, the more each frame differs from the last, and the less compression can do.

PochiSta adjusts automatically at export time so the limit is not exceeded.

• Static: if it is over the limit, colors are reduced step by step until it fits
• Animated: it re-encodes by reducing colors first, then dropping frames. If it still does not fit, the export screen shows the actual size next to the limit

If you see that warning, use the tips above to adjust the design itself.

Discord has both custom emoji and stickers, and their specs differ. Export whichever you actually need.

• Emoji: mixed into a message, displayed small
• Stickers: sent on their own, displayed larger than emoji

For animation, emoji use GIF and stickers use APNG. APNG keeps full colour and real transparency, so gradients and drop shadows stay clean instead of banding the way they do in a 256-colour GIF. PochiSta picks the right format for each spec automatically.

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