https://pipl.com This website will also show you how many % match with your original photo. URL and photo upload both are allow.
You can also try "
Cloud Vision":
- Apart from checking duplicate pictures, it also helps with extracting texts from images
[and few other things...] (useful for checking plagiarized content in whitepapers that are made from images/screenshots only
[instead of a normal PDF format]).
It appears the above two services have altered their system (no longer suitable for finding duplicate pictures
[you might want to remove them from the list]).