SUMMARY When using Spectacle to create a screenshot, and saving it into PNG, I found that using afterward the 'optipng' program on the generated PNG always reduce the file size quite a bit (without affecting the quality). When creating jpeg files, jpegoptim also reduce the overall size of the generated jpeg, without too much quality loss. Could it be possible for Spectacle to automatically use such optimization program if present on the system, and if checked (by default, do not check that option, so that on low hardware computers, saving a file does not take too much time) ?
In principle this would be pretty cool.