Twitch Emote Resizer

Resizing an emote sounds like one job and is really four. The image has to land on an exact pixel grid, because Twitch rejects a file that is one pixel off. It has to stay square, because every emote slot on every platform is square. It has to come in under a file size ceiling that is different on each platform and different again once the file moves. And if it does move, every frame has to survive the resize with its timing intact.

Most image editors do the first two and leave you to guess at the rest. An emote resizer built for the job does all four and then tells you which rule you are about to break. That is what the tool at the top of this page is: drop one image, get back the exact set of files a platform will accept, filenames already correct, with a report of anything that failed a check.

Nothing is uploaded to make that happen. Decoding, resampling, palette quantising and compression all run inside your own browser in a Web Worker, which means the tool works with your network disconnected and the Network tab stays empty while it does.

There is no emote maker here that will draw for you. The tool takes artwork you already have and turns it into files Twitch will accept — but the drawing is what decides whether an emote works, so it is worth saying what makes a good one before the mechanics.

First, design for 28 pixels rather than for 112. The inline chat size is where nearly every emote falls apart: thin outlines vanish, text turns to grey mush, and a detailed face becomes a smudge. Big shapes, high contrast, one readable idea.

Second, export a square source at 512x512 or larger, as a PNG with a transparent background. Downscaling from a large original is always cleaner than scaling a small one up.

Third, drop it onto the tool above and pick the Emote preset. All three sizes come back at once, rendered side by side so you can judge the smallest one immediately.

Fourth, read the warnings before you download. A non-square source stops and asks whether you want to crop to the centre or pad with transparency. An animated source is checked against the 60-frame cap and the flashing rule, and the check names whichever one failed.

Fifth, download the zip and upload the three files in the Twitch creator dashboard under Emotes. The whole loop takes about a minute, which is the point: it is cheap to go back to step one when the 28px version tells you the design is too busy.

The three Twitch emote sizes are 112x112, 56x56 and 28x28, all square PNGs, all with transparent backgrounds. A manual upload wants all three. The auto-resize upload wants one square file anywhere between 112x112 and 4096x4096 and generates the smaller two for you.

The number that gets repeated wrongly is the file size. A static Twitch emote may be up to 1 MB. The 25 KB figure that turns up on emote size pages across the web belongs to subscriber badges, which are a separate upload at 72, 36 and 18 pixels with their own much tighter ceiling. Well-known resizer sites have those two filed under the wrong heading, which is why people crush emotes to a quarter of the quality they are allowed for no reason at all.

If you want the whole table rather than the summary — every dimension, every limit, each with the date it was read off Twitch’s own guidelines and a link to the source — the Twitch emote size page has it, and the resizer on it doubles as a size converter for emotes you have already made.

An animated Twitch emote is a GIF, and three things decide whether the upload is accepted. Frame count is capped at 60. File size is capped at 1 MB for the single auto-resize file, and at 512 KB per file when you upload the three sizes manually — the second number is the one most tools forget to mention. And no emote may flash more than three times in any one second, an accessibility rule aimed at photosensitive viewers that is written into the guidelines.

The animated emote resizer here checks all three before you upload rather than after Twitch bounces you. Frames over the cap are dropped evenly across the timeline and the survivors re-timed, so a 90-frame loop still runs for its original length instead of playing at double speed.

Flashing is measured by relative luminance per WCAG, against both the light and the dark chat background, over the whole frame and again on a 3x3 grid, and you are shown the worst result rather than the average. Colour is handled by locking one palette across every frame instead of rebuilding it per frame, which removes the drift that makes flat artwork shimmer after upload and makes the file smaller at the same time.

Discord publishes no dimension requirement for custom emoji at all. 128x128 is a community convention rather than a rule, and the platform re-encodes whatever you send it. What it does enforce is a hard 256 KB ceiling, and the rejection message names that number when you cross it.

So resizing a Discord emoji is really compressing one, and dimensions are the least effective lever you have. Frame rate is the most effective: halving it roughly halves the file. Palette is next, and dropping from 256 colours to 64 often takes another third off flat artwork with nothing visible lost. The Discord emoji resizer shows the file size updating live as you move those sliders, so you stop at the point where it fits instead of guessing and re-uploading.

One thing worth knowing before you switch format to save bytes: an animated AVIF uploaded to a test server on 26 August 2026 was accepted and then flattened to a single frame. Smaller is no use if the animation is gone. For anything that moves on Discord, use GIF.

Emotes are not the only square this site cuts. The square cropper takes any image to any square size you type. The PFP cropper and the profile picture cropper do the same at avatar sizes with a circle preview beside the square one, because Discord, Twitch and almost everything else mask an avatar to a circle and quietly throw the corners away — which is much easier to design around before you upload than after.

The GIF cropper and the animated GIF resizer treat moving files with the same care as the emote tools: every frame decoded, GIF disposal handled properly rather than naively, timing preserved, one locked palette on the way out.

All of it is free, none of it watermarks anything, there is no account and there is no daily limit — not as a promotion, but because the page is static and has no server that could meter you in the first place.