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Re:Show HN: Plus – Self Updating Screenshots by netcraft on Tuesday January 17, 2023 @02:19PM (#34417285)
something like https://playwright.dev/ might fit your needs.
Re:Show HN: Plus – Self Updating Screenshots by adieuadieu on Tuesday January 17, 2023 @02:22PM (#34417324)
Specifically writing some tests with the "Visual comparisons" feature might work.

https://playwright.dev/docs/test-snapshots