How to open a .bmp file: without installing anything

How to open a .bmp file

A .bmp is a BMP file: Uncompressed Windows bitmap. Huge files, trivially simple. 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 .bmp 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 .bmp

BMP → PNG BMP → JPG BMP → WebP BMP → AVIF BMP → JPEG XL BMP → ICO BMP → MP4 BMP → WebM

Questions

What program opens a .bmp file?

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

Why won't my .bmp open?

Either the viewer does not know BMP (uncompressed windows bitmap. huge files, trivially simple.), or the file is damaged or misnamed. Converting to PNG fixes the first case.

Is it safe to open a .bmp here?

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