Mass export Krita files in the CLI

To mass export Krita files on the command line, you can treat the Krita file as a zip file and extract mergedimage.png. For example, in bash: ¹

unzip -p image.kra mergedimage.png >image.png

To export all Krita documents in a directory, in bash: ²

for a in *.kra; do file=$(basename $a .kra); unzip -p $file.kra mergedimage.png >$file.png; optipng $file.png; done

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According to the documentation, you can also invoke the Krita program with an export flag, but this didn’t work for me and I end up with a blank image instead: ¹

krita image.kra --export --export-filename image.png

Footnotes

1. 20241008204358 ↩ ↩²

2. 20250303201836 ↩