InstantClick is a library based on Javascript. It is used to enhance the website performance and increase navigability. It is designed to help users with bandwidth and latency issues. It provides preloading of links. It also offers a testing feature. Its latest version is InstantClick 3.1. 

InstantClick works by way of pushState and Ajax. It provides a progress bar that is designed to be customizable. InstantClick is available for mobile devices as well. It works for mobile devices of different sizes. It allows its users to set delays with ease before the preloading begins. It helps prevent the possibility of wasted requests effectively. InstantClick provides blacklisting along with events and script re-evaluation.

Polyfill is a technology that provides modern functionality to older, less advanced web browsers or environments, ensuring consistent and efficient user experience. Essentially, it is a fallback mechanism designed to fill in the gaps in browser compatibility by mimicking the API features of recent web standards. By using JavaScript code libraries or plugins, Polyfill identifies the browser's incapabilities and adapts accordingly, essentially "polyfilling" missing features. This technique enables developers to leverage the latest technologies without alienating users of older browsers, maintaining support, and ensuring a seamless integration of innovative web features.



Comparison InstantClick vs Polyfill