Glossary
Cross-browser testing verifies an application in more than one browser engine or browser environment to identify compatibility differences.
A flow working in one browser does not establish that it works in another. Differences can involve rendering, input behavior, web APIs and platform integration.
Teams choose a browser and device matrix based on actual users, run representative flows in each and use appropriate real-device testing when needed.
Zerocheck currently runs Chromium browser tests. It does not provide Firefox, Safari, native mobile or real-device execution. Keep a separate compatibility workflow when those environments matter to your customers.