OpenRaster

File Format
Name	OpenRaster
Ontology	Electronic File Formats Graphics OpenRaster
Extension(s)	.ora
MIME Type(s)	image/openraster
PRONOM	fmt/998

OpenRaster is a file format for layered raster images. It is designed to be an open alternative to Photoshop's PSD format, and similar formats used by graphics editors. It uses ZIP as a container format.

Identification

One of the files in the ZIP container is named "mimetype", and its contents are the ASCII string "image/openraster". Ideally, that's the first file in the container, and it's stored without compression.

Specifications

• OpenRaster Specification
• Draft OpenRaster Specification

Software

• Krita
• GIMP

Sample files

• http://gitorious.org/openraster/openraster-example-files/trees/master
• https://telparia.com/fileFormatSamples/archive/ora/

Related formats

• XML - Used by some of the internal files
• PNG - Used by some of the internal files

Links

• Wikipedia article
• http://www.freedesktop.org/wiki/Specifications/OpenRaster/