Browser Time
Browser Time refers to the work the user's own device (desktop or mobile) must do to turn website code into a visible and interactive page. After the HTML, CSS, and JavaScript files are downloaded, the browser must parse the code, construct the page layout, render the visuals, and execute the JavaScript. Complex websites with heavy JavaScript can create long Browser Time, leading to a sluggish user interface and poor Interaction to Next Paint (INP).
Related web performance terms
- Back/Forward Cache (bfcache)
The back/forward cache (or bfcache) is a browser optimization that enables instant navigations when a user clicks the back or forward buttons.
- Backend
The backend refers to the server-side components of a web application that are not visible to the end-user. This includes the web server, application logic, and databases.
- Backend Cache (AWS)
This is Speed Kit's central, primary cache where Anonymous HTML and other website assets are stored. It is hosted on Amazon Web Services (AWS), a secure and highly reliable cloud computing platform.
- Backend Time
Backend Time is the duration it takes for a website's Origin Server to process a request and generate the HTML for a page.