What is the difference between using "image" or "web link" in defining processes?

Hi there,

I am under way documenting processes at my organisation and I have come upon a choice: do I upload screenshots as images and give a common title, or do I use web links and caption the web link in a specific process?

It seems to me that one is tidy but inflexible (image) while the other is unnecessary work and not coordinated (web link)?

I am wondering if there is a rule of thumb or other expectation (like that searching processes for specific images is easier) that helps decide which to use?

Thanks.