You shouldn’t believe your eyes: how to identify fake images online
One of the first and most useful things you can do is to perform a reverse image search, using a service like Google Images orTinEye. You may want to use both, because they sometimes provide different results.
.. “If you find any matches, look for the earliest appearance. If the earlier version looks different than the version you have, then your version is probably modified. Even if the image doesn’t appear modified, you may discover that the image is not what it claims to be. For example, it’s not uncommon for an image to appear on social media claiming to be of a crowd in a recent protest, but reverse image searches then reveal that the image was actually taken in a completely different city years earlier.”