This free online image analysis tool gives you a lot of information found in the given image (JPEG, PNG, WebP and GIF).
There are a lot of articles about online image compression tools in the net, most of them are very superficial. Usually they end with a simple: "It generates smaller pictures, so it's got to be better."
Learn why such statements are most of the time meaningless, understand the technical background, and find out which tool you should use as of today.
A devoted Compress-or-Die user ("mad scientist") sent a welcome surprise of an unsolicited donation of $100.00 and mentioned how important the tool is to her business. She said she wanted to show her appreciation in a tangible way. I'm overwhelmed. With this donation [1/2]