Allow export to format ".webp"

[joaoeudes7]

Great tool!
I just missed the possibility of specifying the output format, would I have the possibility of becoming a feature?

[victordomingos]

Hi! thanks for you interest and for your feedback. In fact, I have chosen to focus on JPEG and PNG mainly because those were two complementary formats that were supported by most browsers across multiple platforms. Digging throw Pillow's documentation (that's the main library on which Optimize Images is based), it seems that it offers support for that format, so I may add it on the future, or even review and accept eventual pull requests.

[manukieli]

I'm very interesting for webp feature.