- A GIF is a stack of frames. Five megabytes of the same picture, repeated ninety times, each one carrying its own palette.
- Most of those colours do nothing. Two hundred and fifty six slots per frame, and a screen recording uses maybe thirty of them.
- Gifsicle rewrites it. On your machine. A WebAssembly engine runs inside a worker thread in this tab. No upload, no queue, no server.
- Same GIF. A fraction of the weight. Drag the before and after slider, check the numbers, save it. Your file never moved.
01 / The file
A GIF is a stack of frames.
Five megabytes of the same picture, repeated ninety times, each one carrying its own palette.
File weight
5.00 MB
0% smaller
Smaller GIFs,
without the upload.
Eight GIF tools that run inside this tab. Compress, crop, resize, retime, split and convert, free and without a watermark.
- 0 bytes uploaded
- Up to 70% smaller
- Works offline after the first visit
See it happen, before you commit
Drag the divider. Same GIF, two weights, and nothing left your device to make it happen.
0%
Smaller
0 bytes
Uploaded
None
Watermark
That was the whole journey
It happens in this tab, in about two seconds.
No upload bar. No queue. No copy of your file sitting on a machine you have never heard of.
Try it on your own GIFZipGIF in numbers
0
Bytes uploaded
70%
Typical size cut
20
GIFs per batch
8
Free tools
The toolbox
Eight GIF tools, one privacy rule
Each tool does one job properly and shares the same engine, so a GIF can move from trim to crop to compress without ever touching a server.
How it works
Three steps, and none of them is "wait for the upload"
- 01
Drop the file in
Drag a GIF onto the tool, paste it from your clipboard, or point it at an image URL. It loads straight into the page.
- 02
The work happens here
A WebAssembly build of Gifsicle runs inside a Web Worker on your own machine. Nothing is sent anywhere, so nothing waits on a queue.
- 03
Compare, then download
Drag the before and after divider, check the numbers, and save the result. Batches come back as a single zip.
Privacy by architecture
We cannot look at your files, because we never get them
Most online GIF tools take your file, process it on a machine you know nothing about, and hold it for a while afterwards. ZipGIF has no upload endpoint at all. The Gifsicle engine is compiled to WebAssembly and loaded into your browser, so your GIF is decoded, rewritten and saved on the same device it started on.
- No upload, no server-side storage, no retention window
- No account, no email, no tracking of your file contents
- Works with the network off once the page is cached
- Safe for internal screen recordings and client work
Engine
Gifsicle, compiled to WebAssembly
Where it runs
A Web Worker on your device
Network calls with your file
Zero
Batch limit
20 GIFs, 200 MB each
The fair doubts
What people say before they try it
Free tools usually mean a watermark.
There is no watermark and no export limit here. The engine writes a plain GIF, byte for byte the format you started with.
I cannot send client work to a random website.
You are not sending it anywhere. Open the network tab while you compress: the only requests are for the page itself and the engine file.
Browser tools are slow.
A 5 MB GIF finishes in a couple of seconds on a laptop. Nothing waits in a queue behind other people's files.
Questions people ask first
Is ZipGIF really free?
Yes. Every tool is free with no signup, no watermark, and no daily cap. The processing runs on your computer, so there are no server bills to pass on to you.
Do my files get uploaded to a server?
No. ZipGIF loads a WebAssembly build of Gifsicle into your browser and does the work there. Your GIF never leaves your device, which is why the tools also work with the network switched off after the first load.
How much smaller can a GIF get?
Screen recordings and flat-colour animations usually drop 40% to 70%. Photographic GIFs give back less, often 15% to 30%, because their frames share fewer repeated colours.
Does it work on a phone?
Yes. The tools run in mobile Safari and Chrome. Very large files take longer on a phone because the work is limited by your device, not by us.
Drop a GIF in and watch it shrink
It takes a few seconds, costs nothing, and your file stays exactly where it is.
Start compressingLast updated: August 16, 2026 · Built and maintained by Shafiullah Tareen