I'm trying to reduce the size of my photo. I have tried all solutions given on this website.
My current image size is 159 KB and I have to reduce to 10 KB with 5L x 3.6w.
Open image in Photoshop CS3. Go to Image->image size->. A small window will show. Put your desired size on the text of document size. If your size is not accepted, uncheck scale style, constrain proportions, and resample the image. After noting your size, check those three options again and then reduce the pixel dimensions. It will decrease you KB size. But it may be not 159kb to 10kb. For that there will be some online software.
I'd recommend playing around with the Save for Web feature in Photoshop. It is designed for making small jpeg files and will allow you to mess around with resizing the number of pixels as well as the compression level and will allow you to preview the results.
A word of warning however, the display dimensions and the file size you are looking for are almost certainly going to result in a horribly distorted image that will not serve the purpose well. 10kb is an exceptionally small amount of information.
I thought I'd pull some comparison shots out to show the sort of reduction you're going to be looking at. Though, of course, the effectiveness of this technique will depend on the specific image you're working with, this example should give you an idea on what you're looking at.
At 157 kb, the image is:
This comes from Photoshop CS 5.5's "Save For Web" resizing from a RAW, on Medium Quality at about 20% of the pixel size.
At a shade over 10 kb, this becomes:
This is about 10% of the original picture size, and on the Low Quality setting.
Both of these suffer from compression, but this should give you a rough idea of what you're sacrificing for image size.
I don't quite understand what "5L x 3.6w" means, but the obvious thing to do here is to just to scale the photo down. I'm presuming that this will be used as a thumbnail or similar (if you're trying to do anything else with a 10 kB JPEG, give up now!) so pure image quality shouldn't be too important.