For me, free is good and that’s the ThumbsUp app for the Mac. It’s a simple way to create thumbnails of your photos, perfect for uploading to websites or sharing with others, or putting into a photo gallery.
Drag the photos to ThumbsUp and it converts each photo to a thumbnail version (while preserving the original). ThumbsUp even renames the thumbnail file based upon your own custom criteria.
For exammple, you can add an extension, a prefix or suffix, or drop them into a folder. The thumbnails can also have icons, and you can set the size dimensions for each thumbnail photo.
There’s just nothing not to like here.
ThumbsUp takes about 30 seconds to master all the features. If a photo or image is supported by OS X then you can drag and drop it into ThumbsUp to get a thumbnail version of the image.
It eve works with PDF documents and QuickTime movies. There are added options to set the size, thumbnail quality, or scale photos by percentage or maximum size. Did I mention batch? Yes, photos can be batch converted to save time.
If you do photos then you need ThumbsUp. It’s free.