PNG -> ICO · Local tool
PNG to ICO
Turn a PNG into a .ico holding every size a favicon needs.
Last updated
01 / Your device
the file stays here
02 / Browser memory
the work runs locally
03 / Back to you
saved on this device
When you would use this
Situations, not settings.
- A site that still needs a favicon file
- Browsers look for favicon.ico at the root before they read any of your HTML, so one file sitting there covers every visitor including the old ones.
- A Windows shortcut or installer
- Windows draws an icon at several sizes and takes .ico only. A PNG cannot be set as a shortcut icon however it is renamed.
- A design tool that exports PNG and stops
- Figma, Canva and Illustrator all end at PNG. This writes the container they leave out, without installing anything.
How it works / no cloud
A conversion engine, not an upload form.
A browser cannot write this format: canvas.toBlob asked for image/x-icon hands back a PNG instead, silently. So filetity draws your image at each size and writes the ICO container itself, byte by byte, in the page. Nothing is uploaded.
- Offline ready
- Installable app
- No file limit queue
Straight answers
No accordion. Nothing hidden.
- Is it free?
- Yes, with no watermark and no page limit.
- Does it need an account?
- No. There is no account system.
- Is my file processed on my device?
- Yes. The file is read by your browser and never uploaded. There is no server to send it to.
- What formats are supported?
- PNG in. ICO out, one file holding 16, 32, 48, 64, 128 and 256 pixel versions, or a ZIP when you convert several.
- What are the limits?
- Sizes larger than your image are left out rather than scaled up, because enlarging adds blur and bytes and no detail. A 64 pixel PNG therefore yields four sizes, not six. Icons are square, so a wider image is centred on transparency rather than cropped.
- Does it work on mobile?
- Yes, on any modern mobile browser. Large files are limited by the memory the phone gives the browser.
- Does it work offline?
- Yes, once the page has loaded. The tool keeps working with no network connection.
- Why not just rename my PNG to favicon.ico?
- Browsers will often display it, because they read the file rather than the name. Windows will not, and neither will some older readers, because the file is not an icon at all. This writes a real ICO.
- Which sizes go in the file?
- 16, 32, 48, 64, 128 and 256 pixels, minus any that are larger than your image. The page lists them before you convert. 16 and 32 are what a tab and a bookmark bar draw; the larger ones are for Windows shortcuts.
- Does it keep transparency?
- Yes. Each size inside the file is stored as a PNG, so the alpha channel survives. A logo on a clear background stays clear rather than gaining a white square.
- What should I name the file?
- favicon.ico, at the root of your site, if you want browsers to find it without any HTML. The download uses your original file name, so rename it after saving.
Keep working locally
4 available · more coming