PNG to ICO Converter
Drop a PNG file below and get a ICO back in seconds. No upload, no sign-up, no watermark.
Why convert PNG to ICO?
Why ICO?
ICO (Windows Icon) is the favicon format — browsers and Windows read it natively, and one file can bundle several sizes.
What's wrong with PNG?
PNG files are lossless but often large, especially photos or detailed screenshots.
How to convert PNG to ICO
- Upload — drag your PNG file(s) onto the box, click to browse, or paste from the clipboard.
- Adjust — pick the output format if you change your mind, and set the quality or icon sizes.
- Download — grab each ICO individually, or all of them at once as a ZIP.
What we measured
We converted a 640 x 420 PNG into an icon file with this tool and opened the result with an image library.
| Setting | Result |
|---|---|
| Sizes inside the ICO | 16 x 16, 32 x 32 and 48 x 48 |
| File size | 5.8 KB |
One ICO file with several sizes covers browser tabs, bookmarks and desktop shortcuts. Full method and numbers: favicon size guide.
Frequently asked questions
Will I lose quality converting PNG to ICO?
No. ICO is lossless — the converted image is pixel-for-pixel identical to what your browser decoded from the PNG file.
Can I convert several PNG files at once?
Yes. Drop as many files as you like — each one is converted individually and you can grab them one by one or all together as a ZIP.
Which icon sizes should I pick?
16×16, 32×32 and 48×48 (the defaults) cover browser tabs, bookmarks and Windows shortcuts. Add 64–256 px if you also need high-DPI or app-icon use.
Is this tool free?
Yes — every tool on ConvertPicto is completely free, with no account, no watermark and no file limits. The site is supported by ads.
Are my images uploaded to a server?
No. ConvertPicto runs entirely inside your browser using the Canvas API. Your files are read locally, processed on your device and never sent anywhere — we don't even have a server that could receive them.
Does it work on my phone?
Yes. The site is fully responsive and works in any modern mobile browser (Chrome, Safari, Firefox, Edge). Processing large images is naturally slower on a phone than on a laptop.