NextGEN Gallery – open all images on page in fancybox [closed]

Yes, NGG can be used exactly like you described it.

under Other Settings you find the Lightbox Effects where you can select Fancybox, and click Show Advanced Options. That’s where you can find/set class="fancybox" rel="gallery" and you’re good to go.

enter image description here

To show single images you can use the shortcode [singlepic id=47 ...], for instance.

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