Note: While our most popular guides have been translated into Spanish, some guides are only available in English.
Third-party customizations

You can use custom third-party modifications when a feature, functionality, or embedded content isn’t available in Squarespace. Unlike our official integrations, all third-party customizations fall outside of the scope of Squarespace support.

Adding a custom modification usually involves pasting code provided by a third-party service into a Code Block or Code Injection. Specific steps vary by service.

Since these are code-based solutions, we can’t guarantee their functionality or full compatibility with Squarespace. This includes their functioning with our responsive design, particularly their appearance on mobile devices.

Tip: For official integrations we support, visit Squarespace integrations.

Third-party customizations involve using custom code. Code Injection and adding advanced code to the Code Block are Premium features available in the current Website Business plan and higher:

  • Available in: All Business and Commerce plans
  • Available in: Legacy Personal plan (no longer available for new subscriptions)
  • Not available in: Current Personal plan
  • Trial: You can use Code Injection and the Code Block during a trial.

To learn more, visit Premium features.

This video is an excerpt from our Next Steps with Squarespace Series.

Where to go for support

We don't provide support for third-party modifications, unless otherwise specified. This means that we’re unable to help further with setup or troubleshooting.

If a customization is unsupported, there are links at the bottom of its guide to point you in the right direction, like a third-party's documentation or support team, our peer-to-peer Answers forum, or Squarespace Experts.

Using your third-party service

If a service isn’t on the list below, this doesn’t mean you can’t add it to Squarespace. If the service has embeddable widgets, HTML, and/or JavaScript code for adding content or functionality to a website, you may be able to add it to your site using a Code Block, Embed Block, or Code Injection.

For help, we recommend starting with your service’s documentation or contacting their support teams. Find a relevant help article on their site, or ask them for embed code you can add to Squarespace. You can also search our Answers forum for peer-to-peer advice. If you need professional coding or design assistance, a Squarespace Expert can help.

Adding an external link

Adding a direct link to a site outside of Squarespace doesn’t require a custom modification. There are many options for linking to other sites, such as a navigation link, button, or image clickthrough URL. In some situations, this can be a more elegant solution than embedding a third-party service on your site.


Visit these guides on adding these popular third-party customizations to Squarespace:

  • Adsense for displaying ads on your site
  • Apple Touch icon for bookmarks on iOS devices
  • BeerMenus for displaying your business's alcohol selection
  • Bloglovin' for verifying your blog with their service
  • Etsy for embedding or linking to your Etsy shop
  • Eventbrite for event registration
  • Facebook Pixel for conversion and advertising
  • Feedly for how your site appears in their RSS reader
  • Issuu for embedding .pdfs and other files
  • MLS search for real estate
  • Swiftype for an alternative to our built-in Search Block
  • Wufoo for an alternative to our built-in Form Block, often used to allow file uploads
  • Zocdoc for booking doctors appointments
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