Uploading large pictures?

I like to edit a lot of things in photoshop, and then put the pictures up on facebook, deviantart ect. Sometime's the picture will upload, but the problem is sometime's I get this error message saying the file is to big- my question is..how can you change the pictures size [for example on facebook it has to be 4mb's or less] without changing the actual comoposition?Uploading large pictures?
Under the save menu in Photoshop, go to ';save for web'; and choose if you want the image small, medium or large. I go for the smallest one that maintains decent detail to keep people form stealing images for prints.



Oh yes, and change the file name, so it won't replace the original on your hard drive.Uploading large pictures?
if you are using photoshop just change the size in photoshop in the drop down (images) under image size. Once you have it loaded you can always change the size back.
When you save, choose ';Save as...'; and you can then set the compression level. If you keep it at the highest quality (least compression, which is 12 in Photoshop Elements 5.0), it will be a large file. If you set the quality lower, it will show you the new smaller file size. Just keep dropping the quality until it meets the file size requirements. You won't have to drop it far - like maybe 10 instead of 12. It's still called ';Maximum'; quality at 10. It won't really change the quality of the image too much to its detriment, especially for your purposes of uploading to these sites.
these are all good suggestions, but... one of the easiest things you can do (to post on the web) is to reduce the DPI/resolution to 72. it won't affect the quality of your photos one bit and will drastically reduce the file size!
First of all, let's consider your format of the file. Jpeg always compresses a file some, but will have the lowest size for uploading. Personally, as a graphic designer, I do not want compressed files, so I save my files as tiffs.



Next, lets look at the resolution of the file鈥攖he ppi, or ';pixels per inch.'; If you were going to print a full color document using this art, you would want the resolution to be set at 300 ppi (not dpi), however if you are just going to post it on the web, you will only need the usual 72 ppi. That in itself will make a considerable difference in the final size of the file.



Last, but not least, if your photo is still over 4 mb, and you have the ppi at 72, you will have to downsize the photo to a smaller size.



So, there you have the 3 items that you must consider.



Best wishes, and have fun with Photoshop!