It doesn't effect when pictures are “webp” format

[srun007]

Is your feature request related to a problem? Please describe.
It doesn't effect when pictures are “webp” format. It works when the format are png & jpeg, but when copy a batch pictures from internet , the default format become webp, and the rules uneffect!

Describe the solution you'd like
hope to support webp format , especially copy a batch pictures from internet!

Describe alternatives you've considered
when copy some words and pictures more than one , the format changed, from png or jpeg become webp, and rename rules useless

it works when copy a single png picture

It doesn't effect when pictures are “webp” format (copy more pictures become webp format)