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Conversion

Which analytics should I install before launch

You cannot tell whether a launch worked without it — not which channel sent people, not which page they left from, not whether the signup form is broken. If you are avoiding analytics for privacy reasons, a cookieless tool needs no consent banner and answers those questions.

What 13x checks

This is rule conversion.analytics in the public registry: Analytics is installed. It runs on every audit, against the pages we actually fetched, and its result is derived from the response rather than estimated.

Surface
Conversion
Score weight
5 of the readiness score
Scope
Runs on every audited page
Applies
To every site

Registry version 2026-07-30. Every rule is published, and the audit is deterministic — the same page produces the same finding every time.

The fix

The same text the audit hands you when this check fails on your own site.

Install analytics. Without it you cannot tell whether a launch worked — not which channel sent people, not where they left, not whether the signup form is silently failing.

If you want to avoid a consent banner, use a cookieless tool. These set no cookies and store no personal data, so under most EU readings no consent is required:

html code
<script defer data-domain="example.com" src="https://plausible.io/js/script.js"></script>

Fathom, Simple Analytics and a self-hosted Matomo in cookieless mode are equivalent. Vercel Analytics is one toggle if you are already there.

Google Analytics answers more questions but sets cookies, which means a consent banner in the EU — and the trackers-before-consent finding applies to it. Decide which cost you prefer before installing.

The four things to measure at launch: where visitors came from, which pages they saw, how many reached the signup form, and how many completed it.

Does your site have this problem?

13x checks this and 112 others against your live URL in about 30 seconds. No account, and every finding comes with the fix for your framework.

No signup. Results in 30 seconds.

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