Sometimes website editors need more flexibility than standard content modules provide. HubSpot Content Hub includes custom HTML modules, which allow users to add custom HTML code directly into a page.
These modules are useful when embedding external tools, adding custom layouts, or inserting third-party scripts into specific areas of a page.
Understanding how HubSpot Content Hub custom HTML modules work helps teams add advanced functionality while still using the drag-and-drop page editor.
What Is a Custom HTML Module?
A custom HTML module allows users to insert raw HTML code into a page.
This module gives editors the ability to include custom elements such as:
- Embedded widgets
- Third-party forms
- Custom layout elements
- Tracking snippets
- Interactive components
Unlike standard modules, HTML modules give more direct control over the content structure.
Where Custom HTML Modules Are Used
Custom HTML modules can be used in several areas within HubSpot Content Hub, including:
- Website pages
- Landing pages
- Blog templates
- Custom modules
They are typically inserted into pages through the drag-and-drop editor.
Adding a Custom HTML Module
To add a custom HTML module:
- Open the page in the HubSpot page editor
- Locate the HTML module in the module library
- Drag the module into the page layout
- Add the HTML code inside the module
Once saved, the HTML content will render on the page.
Common Use Cases for HTML Modules
Many websites use HTML modules to embed external content.
Examples include:
- YouTube or Vimeo video embeds
- Third-party form embeds
- Event widgets
- Map embeds
- Social media feeds
HTML modules allow these elements to be added without modifying templates.
Embedding Third-Party Tools
Some marketing and analytics tools provide embed codes that must be inserted into a page.
Instead of modifying theme files, these codes can often be placed inside a custom HTML module.
Examples include:
- Chat widgets
- Event booking tools
- External survey forms
This allows marketers to add functionality without developer assistance.
Best Practices for Using HTML Modules
Because HTML modules allow custom code, it is important to use them carefully.
Helpful practices include:
- Avoid adding large or complex scripts
- Test embedded code before publishing
- Ensure external widgets are mobile responsive
- Monitor page performance
Using HTML modules responsibly helps maintain website stability.
When Developers Should Use Custom Modules Instead
If a feature is used repeatedly across multiple pages, developers may prefer to create a custom module instead of using HTML modules.
Custom modules provide:
- Structured input fields
- Consistent design
- Reusability across pages
HTML modules are best suited for one-off embeds or simple custom elements.
Key Takeaway
HubSpot Content Hub custom HTML modules allow users to insert raw HTML code into pages for added flexibility. These modules are especially useful for embedding third-party tools and custom widgets while still working within the HubSpot page editor.

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