Stefan Matei

Applies a lightbox to all image links if and only if the screen is big enough to fit a lightbox. 
Because lightboxes on iPhones should be illegal.

Conditional Lightbox

Use a lightbox only if the screen is big enough.

Guillermo

The default NextGEN gallery navigations (Shutter, Thickbox, etc…) fall short when using a mobile browser? 
Now you can use Photoswipe, the best mobile image browser, just installing this plugin. The default gallery effect and configuration is kept when accessing from a desktop browser.
After activation you’ll find a new Photoswipe submenu in the NextGEN Gallery menu, allowing you to configure how the plugin works.
Please note, I am not the developer, or related in any way with of the authors of <a href="http://www.photoswipe.com/" title="Photoswipe webpage" rel="nofollow ugc">Photoswipe</a> or <a href="https://wordpress.org/extend/plugins/nextgen-gallery/" rel="ugc">NextGEN Gallery</a>. This plugin is only intended to make Photoswipe integration with NextGEN Gallery dead simple.
If you find this plugin helpful, consider <a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=8HNE3583KAVEQ&lc=US&item_name=Guillermo%20Senas&amount=0%2e10&currency_code=EUR&currency_code=EUR&bn=PP%2dDonationsBF%3abtn_donateCC_LG%2egif%3aNonHosted" title="Donate link" rel="nofollow ugc">donating</a>, at least ten cents.
<h4>Options</h4>
The plugin is ready to be used with zero configuration, but to make testing easier, there are 3 configuration options:
<ul>
<li>
Replace viewer with Photoswipe only on mobile browsers: 
This is the default behavior, and will replace the NextGEN Gallery Effect with Photoswipe only when a mobile browser is detected.
</li>
<li>
Always replace viewer with Photoswipe: 
Useful for testing.
</li>
<li>
Never replace the viewer: 
Disables the plugin. Much like deactivating the plugin.
</li>
<li>
Disable additional viewers: 
In this section you can disable other supported image viewers, other than the NextGEN Gallery default ones. 
Currently only Fancybox.
</li>
</ul>

Photoswipe for NextGEN Gallery

The default NextGEN gallery navigations (Shutter, Thickbox, etc...) fall short when using a mobile browser?

Conditional Lightbox vs Photoswipe for NextGEN Gallery