The imagelib library implements image formats such as PNG and PPM in OCaml, relying on only one external dependency: 'decompress'.

Supported image formats:

• PNG (full implementation of RFC 2083),
• PPM, PGM, PBM, ... (fully supported),
• JPG (only image size natively, conversion to PNG otherwise),
• GIF (only image size natively, conversion to PNG otherwise),
• XCF (only image size natively, conversion to PNG otherwise),
• Other formats rely on 'convert' (imagemagick).

As imagelib only requires 'decompress', it can be used together with js_of_ocaml to compile projects to Javascript. Note that some of the features of imagelib require the convert binary (and thus cannot be used from Javascript).