Browser caching is a technique that allows a visitor’s browser to temporarily store certain website files — such as images, CSS, and JavaScript — locally, so repeat visits load significantly faster since those files don’t need to be downloaded again from the server.
Properly configured browser caching, using appropriate cache expiration headers, particularly benefits returning visitors and improves overall perceived site performance across multiple visits and page views within a single session.
While browser caching doesn’t help a completely new visitor’s very first page load, it meaningfully improves performance for subsequent navigation across a site, directly supporting better engagement metrics like pages per session.
We configure proper browser caching as part of our Technical SEO service.