Brute forcing Hit Web Counter - Part 1 : Inspection

I found something called hit web counter which is a count button to record no. of times a web page has been visited.
So in this video we are inspecting how it works.
Figured out that it contains a URL to php script file which returns a png image containing the count.
As we access image the count increases.
Link to part 2: • Brute forcing Hit Web ...
Link to part 3: • Brute forcing Hit Web ...