Ignore file extension when checking for existing files

[Miroslav-Cetojevic]

Background: I'm looking to reduce image file sizes on my disk, which mostly involves saving images to a different extension. When I update a folder with new art, I would like to avoid gallery-dl to re-download files that I saved to a different format. I don't

Is there a way to make gallery-dl ignore extensions when comparing filenames already in the folder?

[mikf]

Ignoring filename extensions has not been implemented.
A download archive file could work in your situation, although that would also use a bit of extra disk space.

[Miroslav-Cetojevic]

Would the archive also work if I just run gallery-dl on images that have been already downloaded? I.e. gallery-dl skips the actual downloads but still records the images as downloaded in the archive?

[mikf]

It would. Files get recorded in the archive file when they've been successfully downloaded or the download is skipped because the target file already exists. Using --no-download or even -s would also add any encountered files to an archive, even though no actual download happens.