JavaScript is a programming language created by Brendan Eich at Netscape in May 1995, with the initial prototype developed in approximately 10 days to add…
Interaction to Next Paint measures the responsiveness of a webpage by tracking the time from when a user interacts with the page to when the…
Total Blocking Time measures the amount of time between First Contentful Paint and Time to Interactive when the main thread is blocked for long enough…
Lazy loading is a technique that defers loading non-critical resources, particularly images and videos, until they are needed or about to enter the viewport, reducing…
Cufón was a JavaScript and Canvas-based font replacement technique that converted TrueType fonts into vector graphics, allowing custom typography on websites without requiring Flash or…
PNG transparency fixes were JavaScript libraries and CSS techniques designed to add PNG alpha transparency support to Internet Explorer 6, which only supported basic transparency…
CSS expressions were Microsoft-specific CSS properties that allowed JavaScript code to be executed within CSS rules, primarily used to work around IE's lack of support…