yii2-nivolightbox-widget

http://demo.dev7studios.com/nivo-lightbox/

composer.json

"require": {
    "xj/yii2-nivolightbox-widget": "*"
},

In View

use xj\nivo\lightbox\LightboxAsset;
use xj\nivo\lightbox\DefaultThemeAsset;
LightboxAsset::register($this);
DefaultThemeAsset::register($this);

In Assets depends

public $depends = [
    'xj\nivo\lightbox\LightboxAsset',
    'xj\nivo\lightbox\DefaultThemeAsset',
];