save a snapshot upon exporting?

feature requests go to If you interested in implementing it, read up on our Lua scripting support (in the manual) and take a look at the examples.

A good candidate to become a built-in feature, meanwhile you can indeed help yourself: There’s an example Lua script which does just that. The script is not bundled with releases, though:

Window > Scripting copy/paste “save”, then install it Edit > Lua Scripts > Manager > Action Hooks
(after loading the script it’s used for the current session, and newly created sessions)