Why convert HEIC to PPM?
HEIC is Apple's High Efficiency format and the iPhone default, storing photos at roughly half the size of JPEG. PPM is a minimal, uncompressed Netpbm format that stores raw RGB values behind a tiny text header, easy for programs to read and write.
HEIC is already a lossy format, so converting to lossless PPM will not recover detail that was discarded — but it prevents any further loss and gives you a broadly editable copy, at the cost of a larger file.
Pixohub converts HEIC to PPM entirely inside your browser using the HTML canvas API and an in-browser HEIC decoder, so your images are never uploaded to a server. That makes conversion instant, completely private, and free — turn as many HEIC files into PPM as you like. Reach for PPM whenever you need programming, image-processing pipelines, and academic use.
HEIC vs PPM: what to expect
HEIC is best for space-efficient iPhone and iPad photos, while PPM shines for programming, image-processing pipelines, and academic use. Keep your original HEIC if you may later need the source file, and export a PPM copy for compatibility and editing.
Optimizing for the web? After converting, shrink the result further with our image compressor, resize it to exact dimensions with the image resizer, or convert an entire folder in one go using bulk format convert.