JPEG

I saved a 1x1 white pixel jpeg at highest compression with photoshop and it ended up being 8KB. After opening it up with a hex editor I was able to get rid of 7KB of extraneous junk. So is there a way to get photoshop not to add crap? or is there a program out there that will remove this stuff by the batches?

I saved a 1x1 white pixel jpeg at highest compression with the gimp and it ended up being 0.7KB. After opening it up with a hex editor I was able to get rid of 0.4KB of extraneous junk. So is there a way to get the gimp not to add crap? or is there a program out there that will remove this stuff by the batches?

I think thats because image editing programs also save information on the program used to create the picture in the jpeg (or any other image format) you save. For example when you see a picture on the internet and right-click it, it gives you information on the program used and even the camera that was used to take the picture, if applicable. Such information is saved with the image file.

LOL Photoshop, always sucking so much at saving anything.

I saved a 1x1 white pixel jpeg at highest compression with Paint Shop Pro and it ended up being 0.6 KB. After opening it up with a hex editor I realized I was wasting my time. So there's no need to get Paint Shop Pro not to add crap because it doesn't in the first place. By the way, Paint Shop Pro supports batch processing, Python scripting and interactive script recording.

I hand code my jpegs in a hex editor. Draw out my Huffman trees on napkins. Just can't trust something important like image compression to a computer program.

>>5
Win.

I was just wondering, how do you get rid of the junk data in a jpeg file? I mean, I know how to use a hex editor but how do you know what to remove?

>>7
Why? 7kB is nothing even on dial-up.

7kB on dialup is about two seconds.

Dialup sucks.

>>8
Well I need to minimize the file size of the jpeg pictures I want to send to my cellphone, obviously so that I can store more. If it is possible to greatly reduce a jpeg's file size by removing junk data in it, I would be interested in knowing how to.

>>10
You can often save a couple kB by removing the JFIF thumbnail if present, removing EXIF data, and (losslessly) converting to progressive encoding. There's probably an open sauce tool out there somewhere that can do this, but if you Google for specs you can find enough info to code your own.

There's probably an operating system to run that application on, but if you Google for theory and architecture specs you can find enough info to code your own.

>>12
Apples & oranges.

I pick particles of sand out of my garden with tweezers.