I use ImageMagick for my gallery image processing (with PhotoShop help).

I’ve never been satisfied with the thumbnails created; I’ve finally drilled into why my thumbnails sux.

ImageMagick issue (bad set by me); I’ve set stuff moving forward; working to fix bad old stuff.

Main issue:

convert -sample
good for full-sized pics

convert -resize
better for small (downsized stuff – icons; thumbs)

The few items I’ve put this change on are great; ah, lesson (finally) learned…