How to call header image while converting site html to WordPress?

To call the header image in a WordPress theme while converting an HTML site to WordPress, you will need to follow these steps:

1. Create a custom header image for your WordPress theme. You can do this by creating an image file and uploading it to your theme’s images folder.
2. Add code to your WordPress theme’s functions.php file to register the custom header image. You can use the add_theme_support() function to do this. Here is an example of how you might add custom header image support to your theme:

// Add custom header image support
add_theme_support( 'custom-header', array(
    'default-image' => get_template_directory_uri() . '/images/header.jpg',
    'width' => 1600,
    'height' => 500,
    'header-text' => false,
) );

In this example, '/images/header.jpg' is the path to the header image file, and 1600 and 500 are the width and height of the image, respectively. The 'header-text' => false parameter disables the display of header text.

3. Add code to your WordPress theme’s header.php file to display the custom header image. You can use the get_header_image() function to retrieve the URL of the header image. Here is an example of how you might display the header image in your theme:

<div class="header-image">
    <img src="<?php echo get_header_image(); ?>" alt="Header Image">
</div>

This code will display the header image in a div element with a class of header-image. You can customize the HTML and CSS to match the design of your theme.

It’s worth noting that these are just basic examples, and you may need to modify the code to fit the specific needs of your theme. You can find more information on custom header images in the WordPress Codex.