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PNG to ICO Converter
Favicons for websites and Windows applications need the .ico container format. Drop a square PNG here and get a clean multi-size ICO (16/32/48/256 px) generated locally in your browser — ideal when the artwork is not yet public.
How to convert PNG to ICO
- Drop your .png files onto the box above (or click to pick them). Batch conversion is supported.
- Press Convert to ICO. The decoding and encoding run inside your browser — there is no upload step at all.
- Save each converted .ico file with one click. That is all.
Why convert PNG to ICO locally?
Favicons are frequently created before a product launch, under NDA, or for internal tools — uploading them to a random converter site defeats the purpose. This page builds the ICO bytes on your device, nothing is transmitted.
Online converters that upload your files have three hidden costs: your privacy (unknown retention policies), your time (upload + queue + download), and often your patience (watermarks, daily caps, forced signups). A browser-based converter has none of those: the processing power is your own device, and the file never crosses the network.
FAQ
Which sizes does the generated ICO contain?
One 256×256 PNG-compressed layer, which Windows and all modern browsers scale down automatically. If you need classic hard-coded 16/32/48 layers, convert your PNG to those sizes first and check back — multi-size packing is coming.
Does the PNG need to be square?
Yes, favicons are square. Non-square images are centred and padded onto a square canvas automatically.
Where do I put the favicon.ico file?
Place it at the root of your website (yourdomain.com/favicon.ico) — browsers pick it up automatically without any HTML tag.