twineconvert

free · in-browser · no upload

ICO to GIF
Converter

Drop your ICO file. We'll convert it to GIF right here in your browser, your file never leaves your device.

or drop your file

Select your file here to get started

or drop your file here.

Accepts .ico

nothing uploaded no file size cap no signup

How it works

Three steps. No upload, no signup.

  1. 1

    Drop your file

    Click the dropzone above or drag a ICO from your desktop. Files of any size, there's no upload, so there's no upload limit.

  2. 2

    Convert in your browser

    The conversion runs entirely in this tab using JavaScript and WebAssembly. Your file never touches our servers, we don't have any.

  3. 3

    Download

    Get your GIF the moment the conversion finishes. Convert another, or close the tab.

Files stay on your device

Your file is never uploaded. The entire conversion runs in your browser using WebAssembly. We can't see what you convert because we have no server to see it.

No file size limit

Server converters cap free users at 1-2 GB and gate larger files behind a paid plan. Since nothing uploads, our limit is whatever your browser can handle.

Free, no signup, no ads on conversions

No account required. No watermark on the output. No queue. Drop a file, get a converted file.

Why convert ICO → GIF

What this conversion is actually for

GIF is universally supported by chat apps, forums, and legacy tools that do not accept newer formats. This converts ICO images to GIF entirely in your browser, so the file never leaves your device. Animated sources export the first frame as a static GIF.

A real example

You have a ICO image and need GIF for a site, app, or workflow that requires it. Drop the ICO here and download the GIF, no upload.

Troubleshooting

My animated source became one frame.

Canvas reads a single frame, so animated sources export their first frame as a static GIF.

Formats involved

About ICO and GIF

ICO, Icon

ICO is Microsoft's icon format, a single file containing the same icon at multiple sizes (typically 16, 32, 48, 64, 128, 256 pixels). Browsers use the favicon at the top of every tab. Modern websites can use PNG favicons too, but ICO remains the universally-supported choice especially for older browsers and Windows desktop integration.

How to open

Browsers and Windows recognize ICO natively. macOS treats them as standard images. Modern image editors read multi-resolution ICOs; some older tools only see the first size.

Full ICO format guide →
GIF, Graphics Interchange Format

GIF dates to 1987 and is best known today for animated short clips. The format is limited to 256 colors per frame, which is why photographic GIFs look blotchy, but for low-color animations and reaction loops it's the universal compatibility format. For any animation longer than a few seconds, MP4 is dramatically smaller (often 10-20×) and every social platform converts uploaded GIFs to MP4 internally.

How to open

Every browser and OS displays GIFs inline. Windows, macOS, iOS, Android, and Linux all open them by default with no extra software.

Full GIF format guide →

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FAQ

Common questions

Is this ICO → GIF converter really free?

Yes. No signup, no watermark, no daily file count limit. Every conversion runs in your browser, your file never touches our servers because there are no servers.

Where does my file go when I convert it?

Nowhere. The conversion runs entirely in your browser using JavaScript and WebAssembly. Your file is never uploaded to our servers. We don't have any servers handling files, there's nothing for us to log, store, or accidentally leak.

What's the maximum file size?

Whatever your browser can hold in memory. Practically, this means a few hundred MB on most computers, significantly larger than the 1-2 GB caps that server-upload converters charge for. Very large files (multi-GB) may require closing other browser tabs first.

Why convert ICO to GIF?

Browser favicons and Windows desktop icons. Short animated loops; reaction images; legacy compatibility. The most common reason to convert is compatibility, GIF works in places where ICO doesn't, or vice versa.

How do I open a ICO file in the first place?

Browsers and Windows recognize ICO natively. macOS treats them as standard images. Modern image editors read multi-resolution ICOs; some older tools only see the first size.

Does this work offline?

Once the page is loaded, the conversion itself runs entirely offline. The first time you use a tool, your browser downloads the conversion library (a one-time cache). If you reload while offline, the page won't load, but you can install the site as a Progressive Web App for full offline use.

Can I convert multiple files at once?

Single file at a time for now. Batch conversion is on the roadmap, for now, drop one file, download the result, then convert the next.