How to schematically describe the functionality of a web application?

Question

IT education

Hello. After some torment, I gave birth to a site for a diploma, and in one of the sections I need to describe schematically all the functionality of my application. In my last thesis, I did this using business process diagrams (dfd, idf0, etc.). But I have no idea how to tie them to my current topic (and they infuriate me). So, I would like to know a more flexible way without any frills and so that it was visual. Thanks in advance.

Answer 1

Ordinary squares with arrows.
Sequence diagrams (to describe what users can do on the site) are also suitable in addition to them: www.visual-paradigm.com/VPGallery/diagrams/Sequenc...

Answer 2

Visio hard.

Answer 3

draw.io (integrates with google docs)

Answer 4

https://balsamiq.com/products/mockups/ninjamock.com
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