Are you doing File>Save (or Save As)? Or are you using Save for Web? You should be using the Save for Web option.
CR
Sorry, I should have mentioned that the image was originally a multi layer Photoshop file that was flattened and saved as a JPG. The image is currently a JPG file. I tried saving it as a GIF with a limited number of colors, but the resulting file was four times larger than the JPG file (at "quality = 0"). How do I shrink this JPG image down below its current 100k file size without messing with the 800 x 600 @ 72dpi specs?
Thanks.
Steve
You didn’t answer Chris’ question.
Save For Web is always smaller with same settings than Save As. Removes any header info, etc.
If you are at 0 quality setting in Save for Web, no Progressive, no ICC Profile, that’s all there is.
If photo image, must look pretty darn rough, though.
M
Steve, i am really curious….what kind of image is this that you are not concerned with quality ? Save for web ‘0 quality’ looks really bad. Anyways, if quality makes no difference then you can always reduce the opacity of the image in the editor before saving for web. It will knock down a few kb’s but it will be washed out a little…pale.
Would turning it into B&W also reduces the size of the file? I haven’t tried it…
Ray
It is a purposely distorted web graphic; if there was such a thing as "quality = negative 100" the image would still have more than enough "quality" for my purposes. My only problem concerns maintaining the 800×600 @72dpi image size while slashing the file size as much as possible.
The description of your project is awfully confusing. What is it that you are REALLY trying to do? I have a feeling that you might be taking the wrong approach to solving your problem. If you can describe what you are trying to do, I’m sure some of the highly qualified people who contribute in this forum would be able to help you find a solution.
If it’s a graphic and not a photograph (or even a very ‘graphic’ photo), reduce the number of colours from 24 or 32-bit (16-million colours plus) to 15/16-bit or even 8-bit (256 colours only). You generally have to do that outside of jpeg. But you can then convert to jpeg afterward if need be. I’ve really lost touch, but I seem to remember that there were utility programs designed to reduce the number of colours based on analysis of the image itself (DeBabelizer?).
steven,
as you target the web, you are limited to file formats web browsers are able to show (if you don’t want helper applications to do it…) so this is jpg, gif, png. they come with their compression algorithms, which means you just can’t get smaller file sizes unless you tweak your images in favour of some algorithm.
all you can do is tweak your image: make it b/w, reduce bits per color, use a mosaic effect.
extreme example:
manually map all your colors to 1 color, say white.
your compression ratio will be amazing… 😉 SCNR