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BMP

Windows Bitmap

BMP stores pixels essentially uncompressed, which makes files huge and decoding trivial. It survives in Windows tooling, embedded systems and scientific instruments that were never updated.

Extensions: .bmp .dib
MIME type: image/bmp

01 Convert BMP to something else

BMP to PNG Lossless, and typically 80–95% smaller.

02 Convert something else to BMP

PNG to BMP 32-bit BGRA, bottom-up — the layout everything reads.

03 Related formats

JPG
JPEG
PNG
WebP
AVIF
GIF
ICO
SVG
HEIC

Opening a .bmp file

If you landed here because something handed you a .bmp file and nothing on your machine will open it, converting it to a format you already have a reader for is usually faster than installing new software. Every conversion above runs in this browser — the file is not uploaded, so it works on a locked-down work machine and on a file you are not allowed to send anywhere.