Adding a Lightbox to Gallery Images in LT Themes

If you want a gallery where clicking an image opens it larger with arrow navigation, the simplest supported setup in LT themes is a normal WordPress Gallery block plus a lightbox plugin.

This applies across the LT series themes, even though many people first notice the effect on the Mies LT demo. If you are using classic Mies rather than Mies LT, the customization path is different.

The supported plugin path

A simple supported setup for this effect is Lightbox with PhotoSwipe:

https://wordpress.org/plugins/lightbox-photoswipe/

How to set it up

1. Install and activate the Lightbox with PhotoSwipe plugin.
2. Open the plugin settings and enable it for WordPress or Gutenberg galleries.
3. Edit your page and insert a standard Gallery block.
4. Use the grid layout you want on the page.
5. Preview the page and click an image to confirm the lightbox opens with navigation arrows.

What to expect

• Your LT theme handles the page design and Gallery block styling.
• The plugin adds the click-to-enlarge lightbox behavior.
• If a demo shows that lightbox effect, it does not necessarily mean the behavior comes from the theme alone.

If it does not work

• confirm you used a standard Gallery block
• check the plugin setting that enables support for WordPress galleries
• clear cache and hard-refresh the page
• test whether another lightbox plugin is conflicting