I found that sites (like fb messenger) which block URLs to certain sites can be easily bypassed by using HTTP Basic Auth with empty credentials. I built a small

I found that sites (like fb messenger) which block URLs to certain sites can be easily bypassed by using HTTP Basic Auth with empty credentials. I built a small service (https://rot13.akhil.cc https://rot13.akhil.cc) that takes in a rot 13'd URL and redirects it to the original with HTTP Basic Auth. The nice part is that the credentials are cached, so visiting it again won't show the dialog.