How do some people know the url of avatar pictures while SoloLearn api is private ?

Question

For example, how do Chirag know the url of avatar pictures in this code?
https://code.sololearn.com/WdgtYIoPvwRy/?ref=app

Answer 1

For example the link to Chirag's profile is

https://www.sololearn.com/Profile/1725640/?ref=app

so the link to his profile picture is

https://api.sololearn.com/uploads/Avatars/1725640.jpg

where 1725640 is Chirag's ID

Answer 2

Thanks Siddharth

Answer 3

It's not difficult. Every sololearner is given a ID.
The profile picture is assigned the name as ID.jpg

Answer 4

So they are accessible not only inside the Sololearn.

Answer 5

Thanks a lot for the insight, I think I get it now...

Answer 6

How do some people know…