File Formats
JPEG format options:
Baseline is the most used compression option. Baseline Optimized produces a slightly smaller saved file using a different compression algorithm. Progressive is used specifically on larger web images. Rather than waiting a long time for the image to load, Progressive slowly displays the image, building it up with a number of scans (set through the menu). This was designed a long time ago when the fastest modems available were 28.8 KB/s.
PSD (Photoshop) format:
There are no specific options for this excellent file format. Photoshop files are perfect if you are working with extras—masks, selections, multi-layered edits, text, and more. It's larger 
than a JPEG but smaller than a TIFF file.
TIFF format options:
Similar to the Progressive option in the JPEG panel, many of the options in this panel are redundant because the internet is lightning fast and storage drives are incredibly affordable. I generally...
