Always try to use before/after visuals for your landing page (if it's applicable).
There are 3 simple steps to create great before/after visuals:
Identify your core product use case and/or problem you solve
Show the traditional way people solve the problem now (and make it look full of friction)
Show your product as the new and better alternative
It's the best way to show people your product's value because they compare visually how your product transforms the life/workflow of your users. Images or videos are always stronger than plain text.
