How can I export all images in a GIMP project?

[rich2005]

Various plugins and scripts for this. Here are two for Windows users. Unzip the attachment

guillotine_into_layers.exe goes in C:\Users\"yourname"\AppData\Roaming\GIMP\2.10\plug-ins
and 
export-layers-plus.scm goes in C:\Users\"yourname"\AppData\Roaming\GIMP\2.10\scripts.

Find guillotine in Image -> Transform  and export layers in File -> Export Layers


one minute example:  https://i.imgur.com/BrHHOAI.mp4

or (and I just check this script still works)  unzip sg-save-all.scm and put in your Gimp scripts folder.

Divide up your image as individual images with Image -> Slice using guides. Run Tools -> Save All.