Guides

Everyday photo and document jobs, explained: why, when and in what order to do them. Every guide leads to the CatTower tool that does the job.

• How to reduce a photo's file size before you upload it

  You reduce a photo's file size by lowering its pixel dimensions and saving it in a compressed format such as JPEG or WebP at a sensible quality. For most forms and email attachments, those two steps are enough.