All tools for image formatting, compression, and rule-based/bulk processing should be tested for quality before being put into active use.
We spend quite a deal of time and effort to make images that look really great, and it’s silly to throw that away just because the bulk-processing tool at the last step is convenient. Because customer experience and our site’s performance both depend a lot on the speed of the page, we should do everything possible to balance image-quality and image-size concerns.
By processing, resizing, and compressing these images, we can compare any new tools back against the originals and against a full-quality photoshop export w/ the same constraints (the .psd file is there too).
Processes we’ve tested:
- ImageMagik