How to Add Custom Code to Webflow (HTML, CSS, JS)

Custom code Webflow means adding your own HTML, CSS, or JavaScript to your site in order to extend its functionality beyond Webflow’s built-in features.

This approach is helpful when:

• You want to integrate external services like analytics, chat, or booking systems
• You need advanced logic or interactions that Webflow does not support natively
• You want more control over how certain parts of your site behave

With Webflow custom HTML, you can insert custom elements or structures.
With Webflow custom CSS, you can apply styles that are not available in the Designer.
With Webflow custom JavaScript, you can add dynamic behavior, automation, or external integrations.

Together, these tools allow you to turn Webflow into a flexible development platform while keeping its visual workflow.

‍

Webflow provides three main ways to insert custom code Webflow, depending on your needs.

1. Embed Code Element

The embed code Webflow element allows you to insert custom code directly inside your page layout. This is useful when the code should appear in a specific place on the page, such as inside a section, a form, or a content block.

This method is commonly used for:

• Embedded widgets
• External forms
• Custom buttons
• Inline elements

It is best for content-level customization, not for global scripts or styling.

2. Page Settings → Custom Code

Page-level custom code allows you to add scripts or styles that apply only to one specific page. This is useful when:

• A script is relevant only to a landing page
• A form integration is only needed on one URL
• A special tracking or test is limited to a single page

Here you can insert:

• Head tag custom code
• Body tag custom code

This gives you fine-grained control without affecting the rest of the site.

3. Site Settings → Custom Code

Site-wide custom code is known as Webflow code injection. It applies globally across the entire website.

This is ideal for:

• Analytics and tracking tools
• Chat and support widgets
• Cookie consent banners
• Global fonts and scripts

Use this option when the code should be present on every page of the site.

‍

Understanding the difference between head tag custom code and body tag custom code is important for performance and functionality.

Head tag custom code loads early and is mainly used for:

• Fonts and styles
• Meta data and verification
• SEO and social integrations

Body tag custom code loads later and is used for:

• JavaScript logic
• User interface scripts
• Tracking and analytics

Placing code in the correct location helps avoid errors and improves site speed.

‍

Webflow custom HTML is used to add structures or elements that are not available in the visual editor. This might include custom layouts, third-party widgets, or advanced markup.

Use custom HTML when you need more control over the page structure or when a service provides an HTML snippet that must be inserted directly.

‍

Webflow custom CSS allows you to apply styles that go beyond the standard style controls. This is helpful for:

• Fine-tuned design adjustments
• Special animations or effects
• Global visual consistency

Custom CSS gives designers and developers precise control over spacing, colors, typography, and behavior.

‍

Webflow custom JavaScript enables interactivity, automation, and integration. It is commonly used for:

• Event tracking
• Dynamic content behavior
• Third-party tools and APIs
• Custom animations and logic

JavaScript makes your site more intelligent and responsive to user actions.

‍

Some typical reasons to add custom code Webflow include:

• Connecting analytics and marketing tools
• Adding chat or booking systems
• Improving accessibility or usability
• Creating custom UI behavior
• Integrating CRMs and external platforms

‍

Using custom code Webflow allows you to combine the simplicity of no-code with the power of development. By using Webflow custom HTML, Webflow custom CSS, and Webflow custom JavaScript correctly, you can build advanced, scalable, and flexible websites.