Fixing Embedded Hubspot Forms That Do Not Work

If your embedded Hubspot form is not loading, not submitting, or behaving strangely on an external site, the issue is usually related to scripts, page structure, or browser security. This guide walks you through the most common causes and step-by-step fixes so your form can capture submissions reliably.

How Embedded Hubspot Forms Work

When you embed a form outside of your Hubspot pages, you use an embed code that loads JavaScript from Hubspot servers. That script then injects the form into your page. Any disruption between the script and the container where the form should appear can prevent the form from working.

Because the form code depends on JavaScript and the browser environment, problems typically fall into a few categories:

• Incorrect or incomplete embed code
• Conflicts with other scripts on the page
• Browser security or ad blocker interference
• Issues with iframes or dynamic content loaders

Check the Hubspot Form Embed Code First

Start by confirming that the Hubspot form embed code has been added correctly and has not been edited or truncated.

1. Copy a fresh Hubspot embed snippet

1. Open your form editor inside your Hubspot account.
2. Navigate to the share or embed section.
3. Copy the full JavaScript embed code directly from Hubspot.

Do not modify the script URL, the portal ID, the form ID, or any parameters unless you are following documented customization methods from the official knowledge base.

2. Validate where you paste the Hubspot code

Place the embed code into an HTML-friendly area of your site, such as:

• A raw HTML block in your CMS
• The template file for that page
• A script injection field that supports inline JavaScript

If your platform strips scripts for security reasons, your Hubspot form will not initialize. Check your CMS documentation for how to safely embed third‑party scripts.

Resolve JavaScript Conflicts Affecting Hubspot Forms

JavaScript conflicts are a frequent cause of embedded Hubspot forms failing to render or submit. If another script throws an error before the form code runs, it can stop the rest of your page scripts from executing.

3. Use the browser console to find errors

1. Open your live page with the embed.
2. Right‑click and choose Inspect or use developer tools.
3. Go to the Console tab.

Look for red error messages that reference your form script, your theme scripts, or other libraries. Fixing or removing the script that is causing errors often allows the Hubspot form to start working again.

4. Avoid blocking or overwriting the Hubspot script

Some performance tools or custom loaders try to defer or rewrite scripts. If they affect your Hubspot embed, the form might not appear. Watch out for:

• Script concatenation tools that change load order
• Minifiers that rewrite inline code unexpectedly
• Lazy loaders that never execute the Hubspot form script

Temporarily disable these optimizations and reload the page. If the form begins working, configure your tools to exclude the Hubspot embed script from aggressive optimizations.

Check Browser and Security Settings Around Hubspot Forms

Because embedded forms rely on external resources, browser settings or extensions can block the Hubspot script or form submission calls.

5. Test your Hubspot form in multiple browsers

To rule out one specific browser, test your page in at least:

• Chrome or Edge
• Firefox
• Safari (on macOS or iOS)

If the form works in some browsers but not others, there may be security, tracking, or cookie preferences that prevent Hubspot resources from loading in certain environments.

6. Disable ad blockers and privacy extensions

Some ad blockers or privacy tools categorize tracking scripts as advertising. Because Hubspot can set tracking cookies, extensions may block its script or related network calls.

1. Disable all blocking extensions temporarily.
2. Reload the page with your embedded form.
3. Check whether the Hubspot form appears and submits correctly.

If the form works when blocking extensions are disabled, add your site and Hubspot-related domains to the extension allowlist and inform your visitors where relevant.

Embedding Hubspot Forms in Iframes or Dynamic Layouts

Many sites embed forms inside iframes, pop-ups, or dynamically loaded sections. While this can be effective, certain setups interfere with the Hubspot script.

7. Avoid nested iframes for Hubspot content

If your form is inside multiple nested iframes, the script may not locate the proper container or may be blocked by cross‑origin restrictions. Place the Hubspot embed in the top‑level page when possible, or limit iframe nesting to a single layer.

8. Ensure dynamic loaders run before the Hubspot script

If you use tabs, accordions, or content loaded after page load, the Hubspot script may execute before the container exists. To fix this, you can:

• Trigger the form embed after the container becomes visible.
• Place the embed code directly in the active tab or section.
• Use an event listener that runs the Hubspot form script once the target element is on the page.

Confirm the Hubspot Form Itself Is Configured Correctly

Sometimes the embed works, but the experience feels broken because the form behaves unexpectedly. Reviewing your Hubspot configurations can help.

9. Check form options and required fields

Within your Hubspot account, review:

• Required fields that might prevent submission
• Validation rules for email or phone
• Progressive fields that depend on contact history

If visitors see errors without clear explanation, adjust labels or help text to clarify what is required before the form can submit.

10. Review redirect and follow‑up settings

A form that submits but does not show a success message can look like it is broken. In the Hubspot form editor:

• Confirm whether the form should display an inline thank‑you message.
• Or confirm the correct redirect URL is configured.
• Test that the redirect page is accessible and loads with no errors.

Use Official Hubspot Troubleshooting Resources

For detailed technical behavior or known issues, always compare your setup to the official documentation. The article on externally embedded forms not working outlines specific patterns that Hubspot engineers have identified.

If you still cannot resolve the problem, provide Hubspot support with:

• The URL of the page where the form is embedded
• Browser and device details used in your tests
• Console errors and network logs from developer tools

When to Get Expert Help With Hubspot Form Embeds

If your site has complex scripts, heavy optimization, or a custom app framework, you might prefer to have a specialist handle your Hubspot integration.

A technical partner can:

• Audit your script loading order and performance tools
• Implement safe ways to defer or lazy‑load the Hubspot script
• Set up consistent form tracking and analytics

For advanced help with implementation and optimization, you can work with a consulting team such as Consultevo, which focuses on integrations, performance, and marketing operations.

Summary: Getting Your Hubspot Form Working Reliably

To restore a non‑working embedded Hubspot form, follow these steps in order:

1. Re‑copy and correctly paste the official Hubspot embed code.
2. Check for JavaScript errors and script conflicts.
3. Test in multiple browsers and with ad blockers disabled.
4. Review iframe and dynamic loading behavior on your site.
5. Verify form configuration, fields, and redirects in Hubspot.
6. Use official documentation and support when needed.

By methodically checking each of these areas, most externally embedded Hubspot forms can be made to load, validate, and submit correctly across all modern browsers.

Need Help With Hubspot?

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