Why is it important to test web pages in multiple web browsers during site development?

Testing web pages in multiple web browsers is primarily important to ensure that the pages render properly in all browsers. Different web browsers can interpret HTML, CSS, and JavaScript in varying ways due to differences in their rendering engines. This means that a web page may look and function perfectly in one browser while appearing broken or displaying incorrectly in another.

By conducting tests across multiple browsers, developers can identify and fix compatibility issues, ensuring that all users have a similar experience regardless of the browser they choose to use. This is crucial because it directly impacts user satisfaction and accessibility, as well as the overall effectiveness of the website.

While achieving high search engine rankings, maintaining a consistent look across devices, and fostering user engagement are important considerations in web development, the immediate need during site development is to guarantee that the site functions correctly across various browsing environments.