User Timing
User Timing is a browser API that allows developers to create custom, application-specific timestamps in their code to measure the performance of certain operations. By using performance.mark() and performance.measure(), you can track durations that are meaningful to your specific application, such as the time it takes for a key component to render or an API call to complete.
Related web performance terms
- URL Parameter
A URL parameter (also known as a query string) is the part of a URL that follows a question mark (?), used to pass data to the server (e.g., ?utm_source=google).
- User Experience (UX)
User Experience (UX) is the overall perception and feeling a person has when interacting with a product, system, or service, such as a website.
- A/B Testing
A/B testing is a method of comparing two versions of a webpage to see which one performs better. For example, an e-commerce store might show 50% of its visitors a green "Buy Now" button (Version A)…
- AVIF
AVIF (AV1 Image File Format) is a modern, next-generation image format that provides significantly better compression than older formats like JPEG and WebP.