anytools

Image tools

GIF to ICO

Build a favicon from a GIF. An ICO holds one still image, so an animated source arrives as its opening frame, wrapped in a PNG.

Runs on your device. The file is never uploaded.

GIF to ICO puts a single still image in the directory, a PNG of your opening frame. The palette rides along, so a 16-colour source stays a 16-colour picture, and every browser since IE11 reads the result. An animated favicon is what people arrive wanting, and the format cannot hold one.

Input

Questions

Does GIF to ICO upload my files?

No. GIF to ICO runs inside this browser tab, in a Web Worker on your own machine, and no part of your file is sent anywhere. There is no upload step to skip — the tool cannot reach a server even if it wanted to, and the counter on the homepage shows the number of outbound requests the page has made: zero.

How many files can I use at once?

Drop as many as you like. Each file is handled separately and comes back as its own result, so twenty files in means twenty results out.

What can I change about the result?

Nothing to configure — it does one thing, and the result is the same every time you run it on the same input.

Is GIF to ICO free, and do I need an account?

It is free and there is no account, no sign-in and no quota. Nothing is metered because nothing runs on a server — the only limit is your own device's memory, which is what decides how large a file it can handle.

Does it work offline?

Yes. The whole site is stored in your browser after the first visit, so GIF to ICO keeps working with the network off. Tools that use a machine-learning model download that model once, on first use, and run offline afterwards.

Can I use GIF to ICO outside the browser?

Yes. Every tool here is the same code on three surfaces: this page, a CLI command, and an MCP tool an AI agent can call. `gif-to-ico` is the name it goes by on all three.

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