Free GIF Tools — Edit, Convert, and Optimize Animated GIFs
A focused toolkit for streamers, modders, and meme makers — pick a single transformation, or chain several into a full emote workflow.
EmoteSizer's tool suite covers every step between a raw GIF and a platform-ready emote. The all-in-one Emote Optimizer makes the common decisions for you — pick a target platform, drop in a file, get a properly sized and compressed download — while the focused tools below give you direct manual control over a single transformation, like adjusting playback speed, cropping a region, or extracting individual frames. Every tool runs entirely on your own device using WebAssembly and the Canvas API, so there is no upload step and no waiting room. Open any tool, drop in a file, and the work starts immediately.
Edit 5
Effects 3
Convert 4
Which GIF Tool Should I Use?
"I want to make a Twitch or Discord emote from a GIF I already have." Open the Emote Optimizer. Drop the file in, pick the target platform, and download a zip of the required sizes. This is the fastest path from a single GIF to a finished emote because the optimizer handles trimming, cropping, resizing, and Smart Compression in one pass.
"I want to find a GIF first, then turn it into an emote." Start at Search, browse trending GIFs and stickers by keyword or category, then click "Use as emote" on any result to hand it off to the optimizer with the source URL pre-loaded.
"I just need to shrink the file size — the dimensions are already correct." Use the GIF compressor. It runs eleven different reduction strategies in order of aggressiveness so you only sacrifice as much quality as the target size demands.
"I need to change the dimensions or square-crop a non-square clip." Use the resizer for exact pixel dimensions, or the cropper for picking a specific rectangular region from the source frame.
"I need to shorten the animation or change how fast it plays." The trimmer removes frames from the start or end; the speed changer rewrites the per-frame delays so the same frames play faster or slower.
"I want to combine several still images into a single animated GIF." The GIF maker takes a sequence of PNGs or JPEGs, lets you reorder them, set per-frame timing, and exports a looping GIF.
How These Tools Work Together
Most emote workflows touch three or four tools in sequence. A typical chain starts with Search to find a candidate clip, moves to the trimmer to cut the clip down to the few seconds that matter, then to the cropper to square the frame around the subject. From there the resizer sets the target dimensions for the platform you have in mind, and the compressor handles the file-size constraint last, since file size is the easiest thing to negotiate against image quality at the end of the pipeline.
If running through that chain manually feels like a lot of steps for a single emote, that is exactly what the Emote Optimizer is for — it bundles trim, crop, resize, and Smart Compress into one screen with the platform's size and file-size limits already filled in.
All Processing Happens in Your Browser
Every tool on this site runs its image work locally — there is no upload step and no server-side rendering of your files. We achieve this with three browser APIs working in concert: WebAssembly builds of FFmpeg and gifsicle for video and GIF transforms, the OffscreenCanvas API for per-frame pixel work, and a small JavaScript glue layer that schedules the work in chunks so the page stays interactive on long files.
The practical implications: nothing you upload is ever sent to or stored on our infrastructure, the tool keeps working if your network drops mid-edit (only the initial page load needs the network), and the time to first byte on a download is roughly the time to encode rather than the time to encode plus a round trip.
Frequently Asked Questions
Which tool should I use to make a Twitch emote?
For a one-shot conversion from a GIF or image to a Twitch-ready emote, use the Emote Optimizer — it handles 28x28, 56x56, and 112x112 in a single export and applies Smart Compress automatically if the result exceeds 1 MB. Use the focused tools (resize, crop, compress) when you want manual control over a specific step.
Do I have to use the tools in a specific order?
No — every tool reads and writes a standard GIF, so you can chain them in any order that makes sense for your source material. That said, the order trim → crop → resize → compress tends to give the best output quality, because each step removes data the next step would otherwise have to operate on.
Can I use these tools on my phone?
Yes. The tools are responsive and the underlying WebAssembly modules run on iOS Safari and Chrome on Android. Performance scales with your device — encoding a long GIF on a phone takes longer than on a laptop, but the workflow is identical.
What's the difference between the Optimizer and the individual tools?
The Optimizer is opinionated: it picks resize mode, file-size target, and compression aggressiveness from the platform you choose. The individual tools are unopinionated — you set every parameter directly. Use the Optimizer when you want a finished emote in three clicks; use the individual tools when you want to inspect every intermediate result.
Are there any file size or quantity limits?
The upload size cap is 20 MB per file across the suite. There's no per-day quantity limit because nothing about your usage is metered server-side — you're rate-limited only by your own device's CPU and memory.
Why do all these tools say "no upload to server"? How does that work?
Modern browsers ship with WebAssembly, OffscreenCanvas, and File System Access APIs powerful enough to run real image and video pipelines client-side. We compile FFmpeg and gifsicle to WebAssembly, fetch the wasm modules on first page load, and execute every encode in a worker thread on your device. The "Upload" button is technically a file picker that hands the bytes to the in-page worker — they never traverse the network.