TinyPNG
TinyPNG focuses on reducing PNG and JPEG image size.
What it does
TinyPNG reduces WebP, PNG, and JPEG file sizes.
When to use it
Before publishing site images, compare fine text edges and file sizes after compression.
Visit TinyPNG official site
Cleanup.pictures
Cleanup.pictures focuses on erasing unwanted objects from photos.
Ezgif
Ezgif focuses on editing and converting animated images.
remove.bg
remove.bg focuses on removing backgrounds around photo subjects.