Questions about batch operations (involving renaming, customizing sizes, and converting formats)

[Eyion]

Can this software rename (for example, replace spaces with -), customize the size (for example, specify the width, and the height will automatically adjust according to the proportion), and convert the format (for example, convert jpg, png to webp, avif) in one operation? For a large number of pictures, and there are nested folders.
Thanks for all!

[barats]

specify the width, and the height will automatically adjust according to the proportion

No

and convert the format (for example, convert jpg, png to webp, avif) in one operation?

Currently, avif is not supported.

You probably should download a copy of executable file and try it yourself.