Captions

To display captions at the bottom of slides you can use data-caption property.

        <a
        
data-fslightbox="gallery"
        
data-caption="<h1>Example title</h1>"
        
href="/images/1.jpg">
        
Captioned source
        
</a>

Or using javascript captions property (array of strings).

fsLightboxInstances['gallery'].props.captions = ['<h2>Example caption</h2>'];