/**
* Twenty Twenty-Five functions and definitions.
*
* @link https://developer.wordpress.org/themes/basics/theme-functions/
*
* @package WordPress
* @subpackage Twenty_Twenty_Five
* @since Twenty Twenty-Five 1.0
*/
// Adds theme support for post formats.
if ( ! function_exists( 'twentytwentyfive_post_format_setup' ) ) :
/**
* Adds theme support for post formats.
*
* @since Twenty Twenty-Five 1.0
*
* @return void
*/
function twentytwentyfive_post_format_setup() {
add_theme_support( 'post-formats', array( 'aside', 'audio', 'chat', 'gallery', 'image', 'link', 'quote', 'status', 'video' ) );
}
endif;
add_action( 'after_setup_theme', 'twentytwentyfive_post_format_setup' );
// Enqueues editor-style.css in the editors.
if ( ! function_exists( 'twentytwentyfive_editor_style' ) ) :
/**
* Enqueues editor-style.css in the editors.
*
* @since Twenty Twenty-Five 1.0
*
* @return void
*/
function twentytwentyfive_editor_style() {
add_editor_style( get_parent_theme_file_uri( 'assets/css/editor-style.css' ) );
}
endif;
add_action( 'after_setup_theme', 'twentytwentyfive_editor_style' );
// Enqueues style.css on the front.
if ( ! function_exists( 'twentytwentyfive_enqueue_styles' ) ) :
/**
* Enqueues style.css on the front.
*
* @since Twenty Twenty-Five 1.0
*
* @return void
*/
function twentytwentyfive_enqueue_styles() {
wp_enqueue_style(
'twentytwentyfive-style',
get_parent_theme_file_uri( 'style.css' ),
array(),
wp_get_theme()->get( 'Version' )
);
}
endif;
add_action( 'wp_enqueue_scripts', 'twentytwentyfive_enqueue_styles' );
// Registers custom block styles.
if ( ! function_exists( 'twentytwentyfive_block_styles' ) ) :
/**
* Registers custom block styles.
*
* @since Twenty Twenty-Five 1.0
*
* @return void
*/
function twentytwentyfive_block_styles() {
register_block_style(
'core/list',
array(
'name' => 'checkmark-list',
'label' => __( 'Checkmark', 'twentytwentyfive' ),
'inline_style' => '
ul.is-style-checkmark-list {
list-style-type: "\2713";
}
ul.is-style-checkmark-list li {
padding-inline-start: 1ch;
}',
)
);
}
endif;
add_action( 'init', 'twentytwentyfive_block_styles' );
// Registers pattern categories.
if ( ! function_exists( 'twentytwentyfive_pattern_categories' ) ) :
/**
* Registers pattern categories.
*
* @since Twenty Twenty-Five 1.0
*
* @return void
*/
function twentytwentyfive_pattern_categories() {
register_block_pattern_category(
'twentytwentyfive_page',
array(
'label' => __( 'Pages', 'twentytwentyfive' ),
'description' => __( 'A collection of full page layouts.', 'twentytwentyfive' ),
)
);
register_block_pattern_category(
'twentytwentyfive_post-format',
array(
'label' => __( 'Post formats', 'twentytwentyfive' ),
'description' => __( 'A collection of post format patterns.', 'twentytwentyfive' ),
)
);
}
endif;
add_action( 'init', 'twentytwentyfive_pattern_categories' );
// Registers block binding sources.
if ( ! function_exists( 'twentytwentyfive_register_block_bindings' ) ) :
/**
* Registers the post format block binding source.
*
* @since Twenty Twenty-Five 1.0
*
* @return void
*/
function twentytwentyfive_register_block_bindings() {
register_block_bindings_source(
'twentytwentyfive/format',
array(
'label' => _x( 'Post format name', 'Label for the block binding placeholder in the editor', 'twentytwentyfive' ),
'get_value_callback' => 'twentytwentyfive_format_binding',
)
);
}
endif;
add_action( 'init', 'twentytwentyfive_register_block_bindings' );
// Registers block binding callback function for the post format name.
if ( ! function_exists( 'twentytwentyfive_format_binding' ) ) :
/**
* Callback function for the post format name block binding source.
*
* @since Twenty Twenty-Five 1.0
*
* @return string|void Post format name, or nothing if the format is 'standard'.
*/
function twentytwentyfive_format_binding() {
$post_format_slug = get_post_format();
if ( $post_format_slug && 'standard' !== $post_format_slug ) {
return get_post_format_string( $post_format_slug );
}
}
endif;
YouTube was founded by three former PayPal employees: Chad Hurley, Steve Chen, and Jawed Karim. They combined product thinking, engineering skills, and a clear user goal: create a website where anyone could upload a video and watch it instantly in a browser.
At the time, sharing video often meant emailing huge files or dealing with complicated players and downloads. YouTube made video:
YouTube launched publicly in 2005. One of the most famous early moments was the first uploaded video, “Me at the zoo,” featuring co-founder Jawed Karim. The clip was short and casual—exactly the kind of everyday content that proved the platform’s big idea: ordinary people could publish video without needing a studio.
| 2005 | YouTube is founded and launches | Introduced easy browser-based video sharing |
| 2005 | “Me at the zoo” is uploaded | Became a symbol of user-generated video culture |
| 2006 | Google acquires YouTube | Provided resources to scale hosting and global reach |
By 2006, YouTube’s traffic was exploding. Video hosting is expensive—bandwidth and storage costs rise fast when millions of people watch content daily. Google’s acquisition gave YouTube the infrastructure and advertising ecosystem to grow into a sustainable business.
YouTube didn’t just create a popular website; it reshaped how people learn, entertain themselves, and build careers online. Its founding helped accelerate:
From a small startup idea to a global video powerhouse, YouTube’s founding is a classic example of a simple product solving a real problem—and changing the internet in the process.
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