Krita

File Format
Name	Krita
Ontology	Electronic File Formats Graphics Krita
Extension(s)	.kra
MIME Type(s)	application/x-krita
PRONOM	fmt/999
Released	2004

Krita is an open source graphics editor. It has a native layered raster graphics format called .kra or Krita document. The format uses a ZIP container, and appears to be similar to OpenRaster.

Identification

Similar to OpenRaster, one of the files in the ZIP container is named "mimetype", and its contents are the ASCII string "application/x-krita". Ideally, that's the first file in the container, and it's stored without compression. This means that, because of the way ZIP works, Krita documents should have "mimetypeapplication/x-krita" at offset 30, but we've observed some that lack this signature.

Sample files

• https://github.com/KDE/krita/tree/master/krita/data/templates/ .../*.kra
• dexvert samples — archive/kra

Links

• Krita website
  • Krita History
  • KRITA Documentation: *.kra - Very minimal information about the .kra format
• Wikipedia: Krita