The BNE Creative Framework incorporates a simple, responsive lightbox plugin called Magnific Popup. You can display a simple image, iframe, gallery or inline content using a lightbox. The lightbox shortcode is included to easily create a lightbox instance from your content or you can manually set it up with HTML.
Image Lightbox from Thumbnail
Lightbox from Buttons
Use a button or link to also open a lightbox image or iframe.
Default WordPress Gallery Support
When inserting a standard WordPress , linking thumbnails to the Media Files, will allow your theme to automatically link them all to lightbox popups.