> For the complete documentation index, see [llms.txt](https://support.fibr.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.fibr.ai/get-started-with-fibr-ai/fibr-script/configure-fibr-script-to-your-website.md). # Configure Fibr Script to your website {% embed url="" %} Adding the Fibr Script takes about five minutes. Once it's installed and validated, you're ready to start running experiments and personalization campaigns. *** #### **Before You Begin** Make sure you have: * Access to your website's HTML (specifically the `` section) * Admin or developer permissions to edit your site's code * Your Fibr account credentials *** #### Step-by-Step Installation **Step 1:** Log in to your [Fibr Dashboard](https://app.getfibr.co) and click **Settings** in the left-hand menu. **Step 2:** Go to the **Setup** section. You'll see your unique Fibr Script displayed here. **Step 3:** Copy the script and paste it into the `` section of your website. Place it as high in the `` as possible, before other scripts like analytics or tracking pixels. This ensures Fibr loads first and can deliver experiences without delay. {% hint style="warning" %} **Avoid GTM installation** Google Tag Manager adds a delay that can cause flickering. [**Click here**](/get-started-with-fibr-ai/fibr-script/impact-of-fibr-script-using-gtm.md) to see impact. {% endhint %} ```html ``` **Step 4:** Save and publish your changes. **Step 5:** Back in the Fibr Dashboard, enter your site URL in the field provided and click **Add URL**. **Step 6:** Click **Validate**, then **Check now**. You'll see a success message once Fibr confirms the script is working correctly. *** #### **Handling Subdomains** If you add the script to your main domain (e.g., `example.com`), it will automatically apply to all subdomains (e.g., `blog.example.com`, `shop.example.com`). However, if you want the script to run only on specific pages or subdomains, you'll need to add it individually to those pages instead. **Remember to whitelist all domains:** In your Fibr workspace, make sure every domain and subdomain where the script runs is added to your allowed list. Otherwise, Fibr won't recognize traffic from those URLs. *** #### **Troubleshooting: Fixing Flickering** If you notice a brief flash where the original page appears before the personalized version loads, try these fixes: **Option 1: Use the anti-flicker script** In the Setup section of your dashboard, you'll find an alternate version of the script designed to prevent flickering. Switch to this version if the standard script causes issues. **Option 2: Check your script placement** Flickering often happens when the Fibr Script loads too late. Make sure it's positioned at the very top of your `` tag, before any other scripts. [Learn more about impact of Fibr Script on Web Performance →](/get-started-with-fibr-ai/fibr-script/impact-of-fibr-script-on-web-performance.md) *** #### **Validation Failed?** If the validation check doesn't pass: * **Double-check the script placement.** It must be inside the `` tag, not the ``. * **Clear your cache.** Your browser or CDN might be serving an older version of your page. * **Verify the URL matches exactly.** Include or exclude `www.` consistently with how your site loads. * **Check for script blockers.** Ad blockers or privacy extensions can sometimes interfere with validation. Still having trouble? Reach out to us at and we'll help you debug. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://support.fibr.ai/get-started-with-fibr-ai/fibr-script/configure-fibr-script-to-your-website.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.