For all that Facebook lets you do -- play games, chat with friends, organize events and share links and videos, among thousands of other things -- it doesn't have the options for uploading and sharing photos that a dedicated photo website might. You can upload and download photos and tag your friends in these photos, but you don't have a lot of control over photo sizes. This is especially true of photos that don't belong to you.
Log in to Facebook and click on the "Photos" link on the left-hand side of the screen. This displays all of your friends' photos in the main panel and shows you a few more options down the side, including your photos (or "My Uploads") and recent albums by your friends. To add high-resolution photos, which will later enable you to download them, you'll have to upload a new album.
Click "Upload Photos" to open the Facebook photo uploader, then click "Select Photos" to begin choosing the pictures you want to upload. You can hold down "CTRL" as you click to select multiple files. When you've finished selected the photos, click on "Open" to proceed to the next step in the upload process.
Type a name for your album and tag the photos with a location if desired. Beside quality, choose "High Resolution." This setting, as Facebook tells you, copies high-resolution photos to your online album and can take up to 10 times longer than the regular photo update. Click "Create Album" to make a new album with a high-resolution copy of your photo. After the upload completes, add more photos to the album by clicking "Add Photos" at the top and then repeating this step.
Share the link to your album with your friends and networks, or specific individuals of your choosing. When your friends view a photo with a high-resolution source, they'll have a different download link than when viewing a standard-resolution photo. They can click "Download High Res" to download the original, uncompressed photo.
Tips & Warnings
- In order to download high-resolution images from your friends' albums, your friends need to have uploaded high-resolution photos. You can't download a high-resolution version when it doesn't exist. You can ask your friends to use the same upload process as you or send them a private message and ask them to email you the original image.