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. In the case of the image name presented in Step 1, the image is ID ...

It should go without saying that Facebook image searches are not the same as facial recognition software, so don’t expect any miracles. Also, don’t be a creep. Using Google Image search.

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.

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.

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 ...