What tools are available to prepare images for web publishing?

Question

Google

Compression, removal of all EXIF ​​and so on.
I wonder who is using what.
Whether it's an OS program or a web service.
PS I heard that Google has such a page where you can compress images, but I could not find it.

Answer 1

Well, in Photoshop "Save for Web" is.

Answer 2

Gimp, reduce the size, apply watermarks, save as JPG, choose an appropriate compromise between size and quality.