jetpack / modules / lazy-images.php

lazy-images.php in Jetpack – WP Security, Backup, Speed, & Growth 8.5, at modules/lazy-images.php

40 lines 1.4 KB

Raw Download Zip

1	<?php
2
3	/**
4	* Module Name: Lazy Images
5	* Module Description: Speed up your site and create a smoother viewing experience by loading images as visitors scroll down the screen, instead of all at once.
6	* Sort Order: 24
7	* Recommendation Order: 14
8	* First Introduced: 5.6.0
9	* Requires Connection: No
10	* Auto Activate: No
11	* Module Tags: Appearance, Recommended
12	* Feature: Appearance
13	* Additional Search Queries: mobile, theme, fast images, fast image, image, lazy, lazy load, lazyload, images, lazy images, thumbnail, image lazy load, lazy loading, load, loading
14	*/
15
16	/**
17	* This module relies heavily upon the Lazy Load plugin which was worked on by
18	* Mohammad Jangda (batmoo), the WordPress.com VIP team, the TechCrunch 2011
19	* redesign team, and Jake Goldman of 10up LLC.
20	*
21	* The JavaScript has been updated to rely on InterSection observer instead of
22	* jQuery Sonar. Many thanks to Dean Hume (deanhume) and his example:
23	* https://github.com/deanhume/lazy-observer-load
24	*/
25
26	require_once( JETPACK__PLUGIN_DIR . 'modules/lazy-images/lazy-images.php' );
27
28	/*
29	* Initialize lazy images on the wp action so that conditional
30	* tags are safe to use.
31	*
32	* As an example, this is important if a theme wants to disable lazy images except
33	* on single posts, pages, or attachments by short-circuiting lazy images when
34	* is_singular() returns false.
35	*
36	* See: https://github.com/Automattic/jetpack/issues/8888
37	*/
38
39	add_action( 'wp', array( 'Jetpack_Lazy_Images', 'instance' ) );
40