Convert bmp to pgm
Converted on your device. Files never leave this tab.
Nothing is uploaded
The converter runs inside this page. Cut your network after it loads and it still works.
No account, no daily limit
No sign-up, no daily limit, no watermark, no queue behind other people's files. Batch as many BMP files as you like.
Real PGM output
Encoded by magick, the same library the command-line tools use — not a renamed extension.
About BMP
Windows Bitmap
Microsoft's bitmap format, which usually stores pixels uncompressed, so files are large for their dimensions. Almost every Windows program can read it. Convert to BMP when an older Windows tool or embedded device only accepts it; convert away from it to save space.
About PGM
Portable Graymap
The grayscale member of the Netpbm family: uncompressed pixels after a short text header. Use it to feed grayscale images to computer vision and image-processing code that reads Netpbm.