Photoshop JPEG Settings: A Great Guide.
JPEG is universal but the settings are not. Photoshop descriptions for the settings are excellent guides.
- 0 to 2 are LOW, avoid if possible.
- 3 to 5 are MEDIUM, lot of web images requires this.
- 6 to 7 are HIGH, better settings for better quality.
- 8 to 10 are MAXIMUM, best settings to use.
Paint Shop Pro is a small graphics application that I use often. Its JPG setting method is gruesome by comparison. Paint Shop Pro's JPEG settings range from 1 to 99 with no clue as to image quality levels.
I use Progressive set to Scan 3 for web images. This allows the image to build in focus from soft, medium, to sharp. The Scan 5 setting looks more like a down-loading error. Test it for yourself.
Graphic Interchange Format is great for saving graphic files. GIF files are a lot easier to handle in Paint Shop Pro. Especially the GIF transparent background color option.
The sample Photoshop menu above has a torn edge look. This would not be possible without the GIF transparent background color option.
A major draw back to the GIF format is its seriously limited color range. It only allows for 256 colors. Ordinarily, photographic images do not survive such a radical color palette reduction.
I have seen some pictures reduced to a GIF and they were quite passable. The process can require manual color palette manipulation. Try it, you will learn a lot about working with palettes.
GIF animations using photo realistic images will demand photo images to be reduced to 256 colors.