[digiKam-users] Thumbnails are in Progessive Graphics File (PGF)

Gilles Caulier caulier.gilles at gmail.com
Wed Apr 10 19:57:35 BST 2019


ImageMAgick do not have a PGF support yet.

The libpgf project provide a CLI converter based on freeImage library :



Gilles Caulier

Le mer. 10 avr. 2019 à 20:42, Tac Tacelosky <tacman at gmail.com> a écrit :

> After digging around a bit, I think I have the answer to the question
> about how the thumbnails are stored, which is PGF:
> https://en.wikipedia.org/wiki/Progressive_Graphics_File
> Unfortunately, I cannot for the life of me find something in PHP that will
> convert from PGF to JPEG or PNG.
> Not surprisingly, it takes up a lot of space, but is wasted bandwidth for
> using a remote database.
> Any suggestions on how to convert it?
> Tac
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