January 2026
Intermediate to advanced
412 pages
8h 38m
English
In modern web development, ensuring that your application behaves consistently across all major browsers is no longer optional: it’s essential. In this chapter, we’ll introduce you to Playwright’s browser-agnostic testing capabilities, showing you how to run a single suite of end-to-end tests against all major browsers with zero code duplication. You’ll learn how to define multiple projects in your Playwright configuration, each customized to a different browser or device profile, and how to launch them in parallel to catch compatibility issues early in your development cycle.
Next, we’ll dive into all the ways you can tweak your browser contexts: adjusting viewport sizes and user ...
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