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How to Add the Page Slug to Body Class in WordPress

Are you looking for a way to add a WordPress page slug in the body class of your theme?

Adding a page slug in the WordPress theme lets you do all the customizations you want without any complications. You can easily change the colors, fonts, and other certain items based on specific pages.

In this article, we will show you how to add a page slug in the body class of your WordPress themes.

Why Add a Page Slug in Body Class in Your Theme?

If you’re looking to customize specific pages on your site and want to correctly identify the page, then adding a page slug in the body class of your theme is really useful.

By default, your WordPress site will only show the post ID classes, which can be tricky when it comes to recognizing the correct page. A page slug shows the URL of your blog post, making it easier to customize the page.

Besides that, you can perform different customizations to your pages using a page slug body class. For example, you can change the font and colors of a particular post or highlight a call to action button on a specific landing page.

That being said, let’s look at how you can add the page slug in the body class of your WordPress theme.

Adding a Page Slug in Your WordPress Theme

To help you add the URL of your page in the body class of your WordPress theme, you can enter the following code in your theme’s functions.php file.

//Page Slug Body Class
function add_slug_body_class( $classes ) {
global $post;
if ( isset( $post ) ) {
$classes[] = $post->post_type . '-' . $post->post_name;
return $classes;
add_filter( 'body_class', 'add_slug_body_class' );

You can access your theme’s functions.php files by going to the WordPress Theme Editor (Code Editor). However, directly editing the theme files is very risky.

That is because any mistake while adding the code can break your site and block you from logging into your WordPress dashboard.

A much simpler way to add the code to the body class of your theme is by using a WordPress plugin like Code Snippets.

You can easily add code to your site within minutes and without any errors using the plugin. Plus, it also ensures that your code doesn’t get removed if you update or change your theme in the future.

First, you’ll need to install and activate the Code Snippets plugin on your site. For more details, you can refer to our guide on how to install a WordPress plugin.

Next, you can navigate to Snippets from your WordPress admin panel. After that, go ahead and click the ‘Add New’ button.

Add new custom code snippet

Now, give a title for your code snippet and enter the code under the ‘Code’ section.

Enter code snippet

Once you’ve added the code, don’t forget to click the ‘Activate’ button. For more details, you can refer to our guide on how to add custom code in WordPress.

You will now start seeing a new body class being outputted like this: page-{slug}. Use that class to override your default styles and customize elements for specific pages.

For example, let’s say you wanted to style your sidebar widgets, but only on a page that has the slug “education.” In that case, you could add CSS like this:

#sidebar .widgets{background: #fff; color: #000;}
.page-education #sidebar .widgets{background: #000; color: #fff;}

For more details, you can see our guide on how to add custom CSS to WordPress.

We hope this article helped you learn how to add a page slug in the body class of your WordPress theme. You may also want to look at our guide on WordPress body class and how to choose the best design software.

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Reader Interactions

24 CommentsLeave a Reply

  1. How about using global $wp_query instead of $post? I’ve noticed that $post gets overwritten if you’ve run a wp_query before the functions.php gets executed.

  2. Thank you for putting it out there, simple bit of code, but useful and allows you to write more human friendly css files, rather than classes based on ID. Cheers

  3. Thank you so much for this! I found out the hard way that page-id can change given different circumstances. This allows me to style individual pages without as much worry. :)

  4. Many thanks for this. Had some problems initially due to the position of code in my stylesheet CSS but once moved to the bottom worked great. Just wish this was standard for WP as others have said and that i had known about this a long time ago

  5. This code works quite well. I was finding, however, that search results would end up with the body class including the slug from the first item listed. Sometimes the first item would have styles that would override the styles for the search results page. Strange, huh!

    I figured out that if you put !is_search() inside the if statement, then this problem is eliminated. If anybody else runs into this problem, the fix is simple.

  6. Thanks for this – been stuck hacking myself to bits with the page-id and suffering the consequences.

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