JPEGmini

No lossless or anyway near, it's a good tool, it can save lots of megabytes and the result is pretty good, basically it's an app that studies the compression for each image so it stops compressing when it starts to make visible artifacts, the results are very good, 99% of the original with savings in file size of 60%. BUT, it marks files with a tag to know if it was already compressed, if the algoritm was as good as they talk, then it should not be need any exif or comment tag. So I rip off the comments and exif and tried that image again to know if it would stop compressing, unfortunately it didin't, what I found out is if rip of color information in each iteration. So it's not as good as they talk on their web site, but still very good app. I think it's too expensive. The problem with Photoshop Save for the web etc, is that is not automatically for each photo, some will be perfect with 60%, others with 40%, etc, what this app does, is dynamically adapts to each photo, as that was the purpose for them in the first place (Server Script to save Disk Space). If it didn't rip color information in every iteration (only possible if i rip the "security" tag it puts on files), then it would be perfect app.

One of my unique MUST have tools for pictures!

Great little tool. Drop dead simple to use

Crushes JPEGs without any discernible loss. Other free tools do the job, but JPEG Mini really shines through on large images. I use it on web projects with really large hero images.

LOL. their intro video at their website made me laugh. as if comparing print outs could show more than the screen. but hey, great actors, kudos!

Very simple to use. Pretty. Unfortunately, its jpeg output is not as good as promised (on a par with Adobe Photoshop CS6 but falling behind Preview, ResizeMe and PhotoBatcher): https://foliovision.com/2016/01/best-image-resizer Still for its drag and drop simplicity and acceptable output quality, JPEGmini is well worth consideration.

Awesome, saves lots of space without any noticeable differences.

Perfect addition to my workflow…

I exported 14 images from Lightroom for posting to the web, and then ran them through JPEGmini to see how much space I could save. Surprisingly, JPEGmini skipped every one of the 14 images, and reported that it could not optimize them further. From this I've concluded that Lightroom does a great job optimizing images for the web, so there's no need for me to use JPEGmini.

Awesome job and easy to use