Question: what is the difference between baseline and progressive in photoshop?
Answer: The baseline vs. progressive trendline is the same: images 10K or bigger are better optimized when using progressive encoding. The overall compression is better: the median is 10.85% optimization for baseline JPEGs (jpegtran saved 9.04%) and 13.25% for progressive JPEGs (11.45% with jpegtran) There is some quality loss ...