SEO audits diagnose why a site is not performing in organic search. Different questions need different diagnostics, so the audits below are deliberately separate rather than a single catch-all review.
If organic traffic has fallen and you do not yet know why, start with the traffic drop audit. It is bounded, fast, and prevents spending on a cause that turns out not to be the cause.
Traffic drop audit
A bounded diagnostic answering one question: why did organic traffic fall? Establishes whether the decline is real, when it began, what is affected, and what changed, before any remediation is proposed.
Related diagnostics
For a broader examination of the site rather than a specific decline, see SEO audits. For technical crawl and indexation questions specifically, see crawl and indexation audit. Where a cause is already confirmed and the work is remediation, see SEO recovery.