GLightbox

GLightbox is a lightweight, pure JavaScript lightbox library designed for displaying various media types including images, videos (YouTube, Vimeo, self-hosted), iframes, and inline content. It is currently stable at version `3.3.1`, with an active beta release stream (`4.0.0-beta.x`) indicating ongoing development towards a new major version. The library is known for its small footprint (11KB gzipped), responsiveness across devices, and comprehensive feature set including gallery support, responsive images, keyboard and touch navigation, zoomable images, and a themeable API. It differentiates itself by being a feature-rich solution without external dependencies, offering a complete lightbox experience out-of-the-box, making it a robust choice for modern web projects requiring media presentation. While minor bug fixes and improvements are released frequently for the v3 branch, the v4 branch represents a significant refactor and enhancement effort.