Evan Solomon

Usually when we talk about making something responsive, we mean horizontally. But it’s annoying when tall images overflow a short laptop screen. This resizes those images on the fly to fit the user’s window. Optionally disable it for individual images by adding a <code>do-not-resize</code> class.

Vertically Responsive Images

Resize images on the fly to make sure the whole thing fits into the user's window.

welshhuw

This basic plugin enables the Magnific Popup image lightbox to work with single images within your posts and pages, gallery images using the built-in WordPress gallery and also WooCommerce product images. 
Images within a Gallery will have next and previous arrows. 
You can add an alt attribute to your image, to enable lightbox ‘captions’.
The plugin comes with a Settings page for you to choose options. All are off by default.
Thanks to Dmitry Semenov for the original script and hard work: http://dimsemenov.com/plugins/magnific-popup/
Note: This only supports images and not the full capabilities of Magnific Popup.

IW Magnific Popup

Simply put, this plugin works great but could slightly be improved :)
I would love to get in touch with the developer and submit a pull request to improve a few things...



Work as expected

A plugin to include the Magnific Popup lightbox for single & gallery images in WordPress.

Vertically Responsive Images vs IW Magnific Popup