I've recently discovered that I really need to shrink my image files. They are taking up way too much space and bandwidth. Problem is, I need to keep the quality and clarity of each one. It seems there are dozens (if not hundreds) of choices out there for lossless image compression. My question is: which is the best?
I intend to make a comprehensive listing on this topic if I can (or if somebody hasn't done a fine job of it elsewhere, already). Please help me compile a list of all the lossless compressors you have ever used, along with your insights on the benefits and shortcomings of each. I'd eventually hope to grade them on the following criteria:
1) Resulting image quality : it's either truly lossless, or it's not
2) Versatility: what file types does it accept, what file types does it output, is it an application or does it run through a browser, file size limits, etc.
3) Efficacy: by how much does it shrink file sizes, what does it discard
4) Usability: user-friendliness, speed of use, etc.
Let's do it.
Starting the list:Smush.itPunyPNG
PS: If there is or has been a thread like this in the past, will somebody kindly point me to it, thankyouverymuch.