After a recent Bootstrap upgrade, extensive CSS changes have been implemented across all pages of the web application I am currently working on. This particular application is designed to be mobile-friendly as well. My current task involves meticulously reviewing the user interface of every page within our application using various browsers - including IE8,9,10,11, Chrome, Firefox, iOS, and Android devices (phones, 7-inch tablets, and 10-inch tablets).
At this moment, my method involves opening both the existing version (pre-upgrade) and the updated version (post-upgrade) of the website in separate tabs. I then switch back and forth between these tabs to identify any potential UI issues such as misalignments, color discrepancies, and text size variations.
I am curious if there is a more efficient or effective approach to conducting this type of comparison?