SEO concepts compared
SEO audit vs Site health score
What each one is, how they differ, when to use which, and how they should appear in a client report.
SEO audit
Use when: Before quoting ongoing SEO, a migration or a redesign, when decisions depend on what really matters.
Site health score
Use when: Between audits, to notice sudden changes such as a spike in broken links after a release.
Short answer
A site health score is an automated count of issues against one tool's rules, useful for spotting changes over time. An SEO audit is a person's judgement of which issues matter for this site, confirmed on the live pages and ranked by impact. Selling a rebranded score as an audit misleads clients: scores weight trivial and critical issues similarly, include false positives and differ between tools.
Reviewed October 30, 2026 against search engine documentation.
Definitions
SEO audit
A reviewed diagnosis of a specific site: tool data checked by a person, findings confirmed on the live site, and fixes prioritised for that site's situation.
Site health score
A single number produced by an SEO tool by counting detected issues against its own rules, usually without judging which issues matter for the site.
Side by side
| Aspect | SEO audit | Site health score |
|---|---|---|
| Produced by | A person using tool data | A tool's automated rules |
| False positives | Removed during review | Included in the score |
| Prioritisation | By impact on this site | By the tool's generic severity |
| Comparable across tools? | Findings are, with evidence | No, each tool scores differently |
| Best use | Deciding what to fix and in which order | Watching for new problems between audits |
When to use each
Use SEO audit when
- Before quoting ongoing SEO, a migration or a redesign, when decisions depend on what really matters.
- When a client needs a prioritised plan their developers can act on.
Use Site health score when
- Between audits, to notice sudden changes such as a spike in broken links after a release.
- As one input during an audit, never as the conclusion.
Common mistakes
- Reporting a rising score as proof of better rankings or traffic.
- Fixing low-impact warnings to raise the score while important issues wait.
- Comparing scores from different tools as if they measured the same thing.
How it should appear in a client report
If a score appears in a report, name the tool, the date and what the score counts, and keep it separate from the audit's prioritised findings. The findings, each with evidence and a suggested owner, are the deliverable; the score is context.
See sample reportsFrequently asked questions
Should agencies stop showing health scores to clients?
Can a site score 100 and still have SEO problems?
Tell us what your clients need
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