Images from digital cameras tend to be rather large, so that they can be viewed on large screens or printed. Images on websites are generally much smaller and that is a problem. Very large images may never upload and large images may not be processed by the website's software. Due to security constraints, it is impossible for a website to 'know' whether an image can be processed, until it has successfully uploaded. Since that may never happen you can see that we are in choppy waters. So, what can we do? We need to determine the properties of images we wish to upload, eg the image dimensions in pixels, and/or the physical file size on your hard-drive. How do we do that? If you use Windows XP, or later, navigate to where the images are using Windows Explorer, then hover over the file of interest. You will see something like this: The yellow panel gives the information we need. The image is 2449 pixels wide by 3445 pixels high and is 2.39 MB in size That will NOT upload, it is too big! 2.39 MB = 2,390 KB The image needs to be about 1000 x 750 and less than 800 KB, to be fairly certain that it will upload. For earlier versions of Windows, hover over the file, right-click and select 'Properties' which wil give the file size. What if it is too big? If you have image manipulation software, great.  If not, then for Windows XP, download and install ImageResizer.exe from Microsoft (It is only 521 KB and very easy to use). After installation, hover over the file as above, then right-click and select 'Resize Pictures'. Tick the 'Large (fits a 1024 x 768 Screen)' box and press OK If the file was called XCD001.jpg it will create a re-sized COPY named XCD001 (Large).jpg in the same Folder. For luddites, who use Windows 98 / 2000 or XP then download Photo Gadget It is very similar, but with a few more facilities. For other Operating Systems, try Googling 'image re-size VISTA' or similar, there are free solutions out there.