Hi @Pavel83, welcome to the community.
You have 3 options
-
no-code Use a backend service like https://www.bannerbear.com/ and on the save button you make the action
External URL
and have it point to the API you setup at banner bear with &dl as the last parameter - some-code Create a custom component specific that will do what you want
- heavy-code get into the Adalo native code and inject a screenshot saver where you need it