PNG to ICO Converter
Convert PNG to ICO free — no upload, no signup
To convert PNG to ICO, drop your PNG images into the box below, click Convert, then Download. Fylo does the work inside your browser, so nothing is uploaded and there's no signup or watermark. Transparent PNG logos make the cleanest favicons and Windows icons.
Drop images here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
Advanced
Non-square images are centred on a transparent square, so nothing is cropped.
How to convert PNG to ICO
Add your PNG files
Drag and drop PNG files into the box, tap to choose them, or paste with Ctrl+V. You can add many at once.
Pick icon sizes
Keep the default 16, 32, 48 and 256-pixel sizes, or choose your own under Advanced.
Convert and download
Click Convert, then download each ICO or get them all in one ZIP.
Why convert PNG to ICO?
PNG is the best source for an icon because it keeps transparent backgrounds. Converting a logo PNG to ICO gives you a favicon.ico for your website root, or a custom icon for Windows shortcuts, folders and desktop apps.
Does converting PNG to ICO affect quality or size?
Fylo resizes your image into each selected size — 16, 32, 48, 64, 128 and 256 pixels — and bundles them in one ICO using PNG-compressed entries, the format Windows Vista and later expect. Non-square images are centred on a transparent square, so nothing is cropped.
What's the difference between PNG and ICO?
PNG is a lossless format with full transparency. It keeps every pixel exact, which makes it ideal for screenshots, logos and graphics — but photos saved as PNG are large.
ICO is the Windows icon format and the classic favicon.ico. One ICO file holds several square images (16 to 256 px) so each screen can use the sharpest size.
Learn more: PNG format guide · ICO format guide
| Property | PNG | ICO |
|---|---|---|
| Compression | Lossless (DEFLATE) | PNG or uncompressed bitmap entries |
| Transparency | Yes — full 8-bit alpha | Yes |
| Animation | APNG only (rarely used) | No |
| Colour depth | Up to 48-bit + alpha | Up to 32-bit + alpha |
| Typical size, 12 MP photo | ≈ 15–25 MB | Max 256 × 256 px |
| Support | Universal — every browser and editor | All browsers (favicons), Windows |
| Best for | Screenshots, logos, graphics with text, editing | Favicons, Windows app and shortcut icons |
| Introduced | 1996 | 1985 |
Frequently asked questions
How do I add a favicon.ico to my website?
Upload the file to your site's root so it's reachable at /favicon.ico, and optionally add <link rel="icon" href="/favicon.ico"> to your page head. Browsers cache favicons aggressively, so a hard refresh may be needed to see the change.
What's the best PNG size to start from?
A square PNG of at least 256 × 256 pixels. Starting larger lets Fylo downscale cleanly into every icon size.
Are my PNG files uploaded to a server?
No. Fylo converts PNG to ICO entirely inside your browser using a background Web Worker, so your files never leave your device. That's also why it's fast — there's no upload or download wait.
Related tools
Updated