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Discoverability

Why internal links matter for indexing

A single-page site has one shot at ranking for one set of terms. It also gives a crawler nothing to follow, so anything you add later starts from zero discoverability.

What 13x checks

This is rule discoverability.internal-links in the public registry: Enough internally linked pages. It runs on every audit, against the pages we actually fetched, and its result is derived from the response rather than estimated.

Surface
Discoverability
Score weight
4 of the readiness score
Scope
Reported as skipped when the page renders only with JavaScript
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.

Add real <a href> navigation between your pages. Two rules:

1. Every page you want indexed must be reachable from the homepage in two clicks or fewer. 2. Use <a> elements with an href. A <div onClick={router.push(...)}> is invisible to a crawler.

A footer with links to your main routes is the cheapest fix and covers most of the gap.

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.

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