Does not recommend this product
Hmm, not yet ready.
Tested on a few websites and it manages to stretch the some content to 500% size whilst leaving others intact, it also seems to have a scroll bar limit. - Could be a coding issue on the site but other dev tools for previewing on devices don't see issues.
When I zoom in I notice the compression on text and graphics, not the best for capturing content for presenting or showing off. https://fullpagescreencapture.com/screen/b8d0497943135bc1529f736bb28e74d5
As it only works on public facing sites, look to other tools for capturing apps with login details.
Although they have a privacy, lack of terms of service? Hummmm, Curious.