ThumbsPlus does a zillion things, most of them extremely well. It reads/writes/converts/edits dozens of types of raster images. It performs lossless rotations on JPEG files, batch renames files, prints contact sheets. I could go on, but I won’t. Suffice it to say that I use this software every day.
There’s only one thing that I’ve found that it doesn’t do as well as I’d like. It’s not as clean as Photoshop when it comes to scaling (resizing) images. As an image database and format convertor it’s not intended to displace Photoshop. In fact, I most often work with both applications open, using ThumbsPlus to find images, dragging them over into Photoshop for composition & editing.
Go. Now. Try this program. You can thank me later.
* Not to be confused with Sirius Cybernetics Corporation. Also, not related to Apple’s Siri.