ImageOptim cuts image filesizes in half. Why isn't everyone using it?

The usefulness extends to mobile platforms as well. While (AFAIK) the Android SDK optimises images to some minor extent as default when building an APK, I still like to run the images through various tools to get the best result.

On one of my previous apps, this resulted in a filesize decrease of approximately 300 kilobytes - effectively halving my apps size with no noticeable difference to the end user. Win!

There are 3 tools that I use extensively:

* jpegMini, for removing EXIF info from jpegs

* optiPNG, for removing extra pallettes from pngs

* gifsickle, to optimize gif's

It's amazing on how much junk bytes you can have in your images. I used them for everything, from my picture collection to my site porfolio.

ImageOptim and JPEGMini have both become parts of our pre-launch optimization, and they can easily save 50-70% of the image sizes.