Skip to main content
Webflow GUIDE

How to Install Sienna on Webflow

Step-by-step guide to adding the Sienna accessibility widget to your Webflow project using Custom Code settings.

Updated on 3/24/2026

Installing Sienna on Webflow

Webflow supports injecting custom scripts at the site level or page level via its Custom Code settings. You need a paid Webflow site plan (not just a workspace plan) to publish custom code.


Step 1 — Open Your Webflow Project

Log in at webflow.com and open the project you want to add Sienna to in the Designer.


Step 2 — Open Site Settings

In the top-left of the Designer, click the Webflow “W” logo or navigate to the Pages panel and click the gear icon. Then go to Site Settings.

Alternatively, from the Webflow Dashboard click the site’s Settings button (gear icon on the site card).


Step 3 — Go to the Custom Code Tab

Inside Site Settings, click the Custom Code tab in the top navigation.


Scroll down to the Footer Code section. This code is injected before the </body> tag on every published page of your site.

  • Use the Footer Code field, not the Head Code — the widget requires the page body to exist before it initialises.
  • Pro license holders can add data-primary-color and data-icon to match the Webflow project’s design tokens.

Step 5 — Save and Publish

Click Save Changes at the top of the Custom Code tab, then Publish your site. Webflow requires a republish for custom code changes to take effect.


Step 6 — Verify on the Live Site

Visit your published site URL and confirm the accessibility button appears. It should be visible within 1–2 seconds of page load.


Adding to a Single Page Only

If you only want Sienna on specific pages:

  1. Open the Pages panel in the Designer.
  2. Click the gear icon next to the page you want.
  3. Scroll to Before </body> tag in the page-level custom code section.
  4. Paste the Sienna script there.

Need Help?

If you’re having trouble with the installation, our team is here to help. Contact our support team for assistance with your Webflow integration.

Free Forever

Ready to make your website accessible?

It takes less than 2 minutes to install!