Glossary · Measurement and evidence
headroom
The distance between a section's current score and the top of its optimal range, listed per section so the largest gains are visible.
What headroom means
The distance between a section's current score and the top of its optimal range, listed per section so the largest gains are visible. It is a measurement of the score, not of the business: a section with no headroom is at the ceiling of what the scanner measures, which is not the same as having nothing to improve.
What headroom can and cannot support
| It can support | It cannot support |
|---|---|
| The distance between a section's current score and the top of its optimal range, listed per section so the largest gains are visible. | It is a measurement of the score, not of the business: a section with no headroom is at the ceiling of what the scanner measures, which is not the same as having nothing to improve. |
Where headroom comes up on this site
- How to read a CrawlCheck report: the grade, the three stages, the fix list and the evidenceAfter the findings come the headroom rows: nothing there is broken, but each is a measure currently outside its optimal range, with the points it is worth to the score.
- We put the findings behind a paywall and the report started saying there were noneWhen the findings array is empty and there is no headroom left, it prints a tick and a sentence: Nothing to fix.
Definitions that name headroom
Related terms in Measurement and evidence
The vocabulary for saying how strongly something is known.
evidence level · false positive · denominator note · percentile rank · population baseline · cohort asymmetry · self-audit invariant · unscored measurement · dated series · change receipt · regression · finding age · graded through a wall · self-audit · placeholder in record · fetcher disagreement · own-host loop · score version · row review · double-counted defect · cosmetic row · gated row · log file analysis · AI referral attribution · finding fingerprint · finding state · fix list · render gap · lab data · Lighthouse · RUM · LCP · CLS · INP · topicality · intent coverage · canary · citation rate · presence rate · answer stability
Questions about headroom
What is headroom?
The distance between a section's current score and the top of its optimal range, listed per section so the largest gains are visible.
What does headroom not show or guarantee?
It is a measurement of the score, not of the business: a section with no headroom is at the ceiling of what the scanner measures, which is not the same as having nothing to improve.
Which area of the glossary does headroom belong to?
Measurement and evidence: The vocabulary for saying how strongly something is known.
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See it in the full glossary · 668 terms across 19 areas.