But this PDF viewer also comes with a feature to view two pages of a PDF document side by side in Google Chrome. By default, this feature remains hidden or disabled.

Any PDF when opened for reading, displays a sing page by default. You can however change it and display two pages side-by-side, just like a book. The new Edge Chromium makes this possible. Here ...

Microsoft Word provides different views of your document, including a two-page layout that resembles an open book. You can also view a page from two different documents for a side-by-side comparison.