I was here just to request the same functionality, with a good argument i.m.h.o.
Why: I added a new image size while developing a custom theme for a client.
Therefore I needed to regenerate thumbnails fast for this new image format.
I used WP CLI for that as that is the fastest method. But now none of my cropped images are tiny anymore. I will have to run it through back-end again which is slower, AND I will have to use extra tinyPNG credit to “re-tiny” the images that were already tiny before, but were undone by the WP CLI command.
This feature is highly requested for me, I work for an agency and we are planning to implement tinyPNG on all future client websites from now on. Under the condition that WP CLI is supported.
EDIT:
For the fun of it, check this image:
https://imgur.com/a/9fjt5YY -36.2% savings (yes, minus)
Thanks
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This reply was modified 4 years, 7 months ago by
Vinobe. Reason: Added screenshot