TinyJPG

I've been using TinyPNG (https://tinypng.com/) for a couple of years now for all my web development projects. Super fast and simple, compression is great and quality is always amazing. I'm super excited to see the product expand to JPGs now! Web devs out there will love this, I'm sure :)

Pretty much http://kraken.io for files up to 5MB. Still useful though! Related: are there any good Mac apps for doing this?

Amazing! I use JPGmini (http://www.jpegmini.com/) and imageOptim (https://imageoptim.com/). Both are great and are on my mac. @brian_lovin - do you use it via terminal in any way? Or do you just throw your images to the site, convert, then DL back to your computer?

I have been using https://miniimagesvideos.com for image compression and https://miniimagesvideos.com/com... for video compression. Great results till now with minimal loss of quality