Why are PDF files different even if the content is the same?

Question

\"There’s usually more than one way to create PDF documents that look like identical twins when opened in a PDF viewer. And even if you create two identical PDF documents us

Answer 1

In addition to the other answers, do not forget that there are always different ways to accomplish the same result in programming. Think about when HTML5 hit the scene.

versus the older way of using JS....

Just a not that there are always different ways to produce the same effect and two different people will use two different methods. That is why REST API's were created.