Yes, with no account, no watermark and no per-file limit.

Are my files uploaded?

No. The conversion runs entirely in your browser and the file never leaves your device.

Convert farbfeld to ICO

ICO packages an image for use as a Windows or browser icon. Everything happens locally: farbfeld files are decoded by your browser and written back out as ICO without ever touching a server.

Checking your browser's codec support…

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Drop your farbfeld files here or

Batch supported · files never leave your device

Output format Quality 92%

What is farbfeld?

A deliberately minimal lossless format from the suckless project. Sixteen bits per channel, no compression, no metadata — the point is that the format is trivially correct.

Why convert farbfeld to ICO?

ICO packages an image for use as a Windows or browser icon.

It exists to be an intermediate, not an archive. You convert out of it when the pipeline is finished and you need a file humans can actually open.

How this converter handles farbfeld

16-bit RGBA samples are decoded and mapped down to 8 bits per channel.

Why the conversion happens on your device

This page is a static file. There is no upload endpoint, no queue and no server-side conversion step — the work is done by JavaScript running in your own browser. That has three practical consequences:

Nothing is transmitted. Open your browser's network panel and confirm it yourself.
No file size limit. Server-based converters cap uploads and throttle repeat use. Your machine has no such quota.
No queue. Conversion starts immediately and runs at local speed.

Frequently asked questions

Is this really free?: Yes, with no account, no watermark and no per-file limit. There is no server cost to recover because no server is involved.
Are my files uploaded?: No. The page has no backend to upload to. You can verify this in your browser's developer tools, or by loading the page and disconnecting from the internet before converting.
Does converting farbfeld to ICO lose quality?: No. ICO is lossless, so the pixels are preserved exactly. The file may be larger or smaller than the original, but it will look identical.
Can I convert many files at once?: Yes — drop a batch and they are processed one after another.
What if my browser cannot decode farbfeld?: For formats browsers do not support natively (TGA, QOI, PPM/PGM/PBM, farbfeld, BMP, ICO) FormatAtlas ships its own decoder, so support does not depend on your browser version.