How is this your biggest problem?
Emailing an annotated screenshot or attaching to a JIRA seems better because it’s more consistent and blends with other processes. What should happen when webpages content changes or goes defunct? Now you’re also creating an archive.org… and on and on.
Do not get stuck and sink your time and effort right into a local maxima.
Maybe you will discover market [of fools] ready to invest time into this exact locally optimal solution, but I predict it’ll be disappointingly small. The issue it solves isn’t broadly substantial enough to warrant a specialized solution.
Only 1 solution to know for certain, though 😉