Simple and super lightweight Lightbox for WordPress with gallery navigation support. Features Zero render-blocking tags are added on the page Only 0.5 kB is loaded if no linked images found Gallery support Caching, minifying & combining friendly jQuery independent (in case it’s async) Responsive Keyboard navigation Swipe navigation Demo firmcatalyst.com/lightest-lightbox Usage Starts working just by the plugin activation. Opens linked images in a popup Lightbox by click. Adds arrow navigation, if an image is a part of a gallery or other links sequence. Development You can modify the code for your needs, or suggest improvemens on GitHub. It is pretty transparent and well-commented.