UnlimitedConvert
PNG to ICO Converter
Turn PNG files into ICO in seconds. Everything happens on your device: nothing is uploaded, and there's no limit.
Your images are processed in this browser tab and never uploaded.
Why convert PNG to ICO?
PNG files can be large, especially for photos.
Browsers and Windows need ICO for favicons and app icons.
What to expect
- One ICO file is created with 16, 32, 48, 64, 128 and 256 pixel sizes. Non-square images are centred on a transparent square.
Making a favicon from a PNG
Browsers look for /favicon.ico at the root of every website, and Windows uses ICO files for desktop shortcuts. One ICO from this tool holds 16, 32, 48, 64, 128 and 256 pixel versions, so it looks sharp in a browser tab, a bookmark and on the desktop.
Start with a square PNG of at least 256×256 pixels with a transparent background for the best result.
Tips
- Simplify the logo for tiny sizes: at 16 px, a single letter or symbol reads better than a full logo with text.
- Upload favicon.ico to your site's root folder, then add <link rel="icon" href="/favicon.ico" sizes="any"> in the page head.
- Modern sites often add a 180×180 PNG apple-touch-icon for iPhone home screens as well.
How to convert PNG to ICO
Add your files
Drop your PNG files into the box or tap “select files”. Add as many as you like.
Pick the options
Nothing to set: every favicon size from 16 to 256 pixels goes into one file.
Convert and download
Press Convert. Download each ICO on its own, or everything at once as a ZIP file.
PNG vs ICO
| PNG | ICO | |
|---|---|---|
| Full name | Portable Network Graphics | Windows Icon |
| Compression | Lossless | Lossless |
| Transparency | Yes | Yes |
| Animation | No | No |
| Best for | logos, screenshots, graphics with text and anything that needs a transparent background | website favicons and Windows app icons |
| Support | Opens everywhere, including all browsers and design tools. | Used by all browsers for favicons and by Windows for icons. |
About the formats
PNG (Portable Network Graphics, 1996) is a lossless format that keeps every pixel exactly. It supports full transparency, which makes it the standard for logos, screenshots and graphics with sharp edges.
ICO (Windows Icon, 1985) is the icon format used by Windows and by website favicons. One ICO file can hold several sizes (16×16 up to 256×256), so the right one is shown in tabs, desktops and taskbars.
Frequently asked questions
How do I convert PNG to ICO?
Drop your PNG files into the box above (or tap Select files), check the options, then press Convert. Each ICO downloads on its own, or you can download them all as one ZIP file.
Are my files uploaded anywhere?
No. The conversion runs entirely in your browser on your own device. Your PNG files are never sent to a server, so they stay private, and it works even on a slow connection once the page has loaded.
Is there a limit on how many PNG files I can convert?
No. Convert as many as you like, for free, without signing up. Very large batches are processed one after another so your browser stays responsive.
What size should a favicon be?
Modern sites use a 32×32 favicon, with 16×16 for older browsers and larger sizes for shortcuts. This converter puts 16, 32, 48, 64, 128 and 256 pixel versions into one ICO file, so you only need one. Use a square image for the best result.
Will I lose quality converting to ICO?
No. ICO is lossless, so the converted image keeps every pixel of the original.
What if my PNG isn't square?
It is centred on a transparent square, so nothing is cut off. For the best result crop it square yourself first.
Does it work on iPhone and Android?
Yes. It works in Safari, Chrome, Firefox and Edge on phones, tablets and computers. Nothing to install.