Remove outdated thumbnail sizes

[codestylist]

I would like to request a feature to easily remove outdated image sizes without having to regenerate the thumbnails.

My situation is that I have a library of 32,000+ images, each image currently has up to 11 different thumbnail sizes. I have reduced the thumbnail sizes to 7, so four thumbnail sizes need to be deleted.

I would like to see a new parameter wp media regenerate --only-deleting added to simply delete all thumbnail sizes that are no longer needed. I know that wp media regenerate also does the job, but it also regenerates the already existing thumbnail files, which is not necessary in this case.

Hope my request makes sence for you. Thank you for all the work and time you put into wp-cli!

[swissspidy]

Thanks for filing this feature request. This sounds like a duplicate of the second part of #111:

Delete thumbnail files for old unregistered sizes in order to free up server space. This may result in broken images in your posts and pages.

[codestylist]

Thank you @swissspidy . Yes, basicly it is the same request. #111 is from 2019 (5 years old). Is there any possibility that someone will implement this request?

[swissspidy]

I think so, yes, it sounds like a useful addition :) Maybe I'll even find time myself to look into it.

[codestylist]

You are my hero 🥳. That would be really very useful! If you need someone to test it, please let me know. I would be more than happy to contribute something as well ☺️.

[swissspidy]

#199 might do the trick.

[codestylist]

You are awesome @swissspidy. I guess there is nothing I can help with, right?
Looking forward to have this implemented in the next version. Thank you very much for your time and effort!

[swissspidy]

Feel free to test the PR and leave comments there :)