Convert heif 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 HEIF files as you like.
Real PGM output
Encoded by magick, the same library the command-line tools use — not a renamed extension.
About HEIF
High Efficiency Image File Format
An MPEG container standard (ISO/IEC 23008-12) from 2015 for single images and image sequences. It can hold HEVC, AV1 or other codecs, along with depth maps and bursts. Convert HEIF to JPG or PNG for apps and sites that cannot read it.
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.