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Installing the Tag Insight snippet
Last updated on July 14, 2026
The Tag Insight snippet connects your website to your project, so your audits can capture the data your pages actually send. This guide walks you through copying the snippet from the Install Tag Insight module, placing it before the closing </head> tag, and checking that everything works.
Before you start
You need a Tag Insight account. When you sign up, a workspace and a first project are created for you automatically, and Install Tag Insight is the final step of onboarding, so you may already have seen the snippet there. The snippet belongs to a project: if your workspace has more than one, make sure you are in the right project before copying it.
You also need a way to edit the HTML of your site. If you do not deploy code yourself, plan to hand the snippet to a developer.
Copy and place the snippet
- 1
Open your project and click Install Tag Insight in the sidebar.
- 2
Copy the snippet shown on that page.
- 3
In your site's HTML, paste the snippet just before the closing </head> tag. It should load on every page you want Tag Insight to cover, so add it to a shared template or layout rather than to individual pages.
- 4
Publish the change to your live site.
Verify the installation
Start with a quick manual check: open your site in a browser, view the page source, and confirm the snippet appears before </head> on the pages you expect.
Then confirm Tag Insight is receiving data. In the sidebar, open Tracking plan and go to Audits, then start an audit on your site. Once the audit has run, open Live Debugger to review the hits captured during that run. If hits show up, the snippet is installed correctly. If nothing appears, check that the change was actually published on the audited pages and that the snippet sits inside the head of the document, not in the body.
No access to the code? Use the Chrome extension
If you cannot edit your site's HTML, or you want to try Tag Insight before deploying anything, use the Tag Insight Chrome extension instead. It runs QA DataLayer, Audit My Ad Tech, and Reverse Tracking Plan directly from your browser, works without a TMS, and does not need the snippet at all. You still need a Tag Insight account to sign in.
The extension is a good fit for staging environments, one-off checks, and sites where deployments are slow. For scheduled audits on your production site, install the snippet.
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