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PNG to ICO converter
Free PNG to ICO converter in your browser. Files stay on this device. Nothing is uploaded.
Drop images here
or click to choose. Paste works too.
Files never leave this device. Conversion runs in your browser.
Why convert PNG to ICO?
Favicons and Windows shortcuts expect an ICO container. Converting a square PNG into ICO packages the icon for browsers and desktop shells.
What changes in the file
- Both formats are lossless; pixels stay bit-stable aside from color-space handling
- Transparency is supported in the ICO output
- You can resize, adjust quality where relevant, and strip EXIF on export
- Conversion runs on this device — the file is not uploaded
How to convert PNG to ICO
- Drop one or more PNG files onto the converter (or pick them from disk).
- Confirm the output is set to ICO, then adjust quality, size, or metadata if needed.
- Download the converted ICO file — processing never left your browser.
About PNG
PNG is a lossless raster format with optional transparency. Pixels are preserved exactly, so it is the usual choice for screenshots, UI, logos, and any image that needs a clean alpha channel.
About ICO
ICO is the Windows icon container format. It can hold one or more raster images at different sizes and is still used for favicons and desktop shortcuts.
Common questions
Is this PNG to ICO converter free?
Yes. Formatly converts PNG to ICO in the browser at no charge and without an account.
Do you upload my PNG files?
No. Decoding and encoding run locally with browser APIs and WebAssembly codecs when needed. Files stay on this device.
Will converting PNG to ICO reduce quality?
ICO is lossless, so the export keeps the decoded pixels. If the source was already lossy (PNG), prior compression artifacts remain.