Web Performance & Predictive Loading
Open-source libraries and frameworks for optimizing web performance through predictive prefetching, lazy loading, and resource hints.
3 projects
See methodology for ranking rules; order uses public GitHub metrics within this scenario.
| Rank | Project | Stars | Forks | Updated | License |
|---|---|---|---|---|---|
| 1 |
lazysizes
High performance and SEO friendly lazy loader for images (responsive and normal), iframes and more, that detects any visibility changes triggered through user interaction, CSS or JavaScript without configuration. |
17.7K | 1.7K | 04/03/24 | MIT |
| 2 |
vanilla-lazyload
A lightweight vanilla JavaScript lazy loading library that defers images, videos, iframes, and scripts until they enter the viewport, using IntersectionObserver and supporting responsive images. |
7.9K | 673 | 06/22/26 | MIT |
| 3 |
guess
🔮 Libraries & tools for enabling Machine Learning driven user-experiences on the web |
7.1K | 198 | 08/27/26 | MIT |