How to open a .ico file: without installing anything

How to open a .ico file

A .ico is a ICO file: Windows icon and favicon container, several sizes in one file. Windows Photos, macOS Preview, GIMP, Photoshop, any browser open it. Or drop it below: it opens and converts in your browser, nothing to install.

Drop files here or click to chooseSeveral files at once are fine.

🔒 Nothing is uploaded. Check the Network tab of your browser: it stays empty.

Three ways to open it

Drop the .ico file above: it opens and converts right here, nothing to install.
For a desktop app: Windows Photos, macOS Preview, GIMP, Photoshop, any browser.
If it still will not open, convert it to PNG, that is what most people are really after.

Convert a .ico

ICO → PNG ICO → JPG ICO → WebP ICO → AVIF ICO → JPEG XL ICO → BMP

Questions

What program opens a .ico file?

Windows Photos, macOS Preview, GIMP, Photoshop, any browser. Or drop it here, without installing anything.

Why won't my .ico open?

Either the viewer does not know ICO (windows icon and favicon container, several sizes in one file.), or the file is damaged or misnamed. Converting to PNG fixes the first case.

Is it safe to open a .ico here?

Yes: the file is read in your browser and never leaves your device.