A Facebook reverse image search is the perfect way to find a friend's profile, copyright infringers, and more. Here's how to do it!

Facebook supports the JPEG and GIF file formats and can utilize many of the photos already uploaded to your Facebook account. Facebook requires that all cover photos be at least 720 pixels wide.

Something like this: 178696_436095929768187_414916441_o.jpg 2. Now copy the image ID, which is a series of numbers in the middle of the image file name, to find the source on Facebook.

Facebook recommends that you use JPEG, BMP, PMG, GIF, or TIFF images. To add a new profile picture, sign into Facebook and navigate to your profile.

The new partnership builds upon the second generation of Mozilla's mozjpeg encoder, a home-brewed solution capable of shaving an average of 5% off the size of JPEG files without a noticeable loss ...