The problem with vidble.com is that it seems you can't upload by simply supplying a URL to a file. You have to save the file to your computer and then upload from there (which then requires browsing for the file), and that's much more of a pain in the neck compared to simply copying and pasting the URL of the original image and clicking upload. Also, it appears you need to have an account with vidble.com in order to upload images. For these reasons, I am going with https://imgsafe.org/.