Langues

Content Gap Analyzer

Free, no signup. Identify topics a competitor wins, then optionally compare the ranking pages’ internal support to see whether inlinks, anchors, crawl depth, or stronger linking pages may help explain the gap.

Built by Patrick Stox

Paste your Ahrefs/Semrush keyword export first, then a competitor export. Optional paired crawl and internal-link exports add structural evidence. Separate data sets with a line containing ---. Files never leave your browser.

Optional structural comparison: add your crawl page export third and the competitor crawl page export fourth. To compare anchors and linking-source support too, add your internal-link export fifth and the competitor export sixth. Select uploaded files in that order.

Sample report

Illustrative example — based only on the supplied rows

Your export
Keyword,URL,Position,Volume
seo audit checklist,https://example.com/seo-audit/,18,1000
---
Competitor export
Keyword,URL,Position,Volume
seo audit checklist,https://competitor.com/guides/seo-audit/,3,1000
technical seo template,https://competitor.com/guides/seo-audit/,5,500
---
Your crawl pages
URL,Inlinks,Crawl Depth,Link Score
https://example.com/,120,0,100
https://example.com/seo-audit/,2,4,8
---
Competitor crawl pages
URL,Inlinks,Crawl Depth,Link Score
https://competitor.com/,160,0,100
https://competitor.com/guides/seo-audit/,24,2,62
  • seo audit checklist — they rank better; the supplied crawl also shows their page is shallower and sits higher in its own site’s inlink and Link Score distributions.
  • technical seo template — they rank, you do not; no matching URL is inferred from your ranking export.
  • Structural observations — diagnostic associations only. They do not change the directional-upside calculation or prove why Google ranks either page.

How to use it

  1. Export organic keywords for your site and one competitor with keyword, ranking URL, position, and volume columns.
  2. Paste your CSV first, add a line containing ---, then paste the competitor CSV.
  3. For structural comparison, add your crawl-page export third and the competitor crawl-page export fourth. Use URL plus any of Inlinks, Crawl Depth, Internal PageRank, or Link Score.
  4. Optionally add your internal-link export fifth and the competitor export sixth. Each needs Source, Destination or Target, and Anchor or Anchor Text.
  5. Choose Analyze. Check intent first, directional upside second, and structural observations third before deciding between a new page, an on-page improvement, or stronger internal support.
Local data

Saved targets, named lists, and recent check summaries remain only in this browser.

Runs entirely in your browser — nothing you paste is uploaded or stored. Anonymous run-level outcome counters may be used for aggregate research; URLs, domains, IPs, and identifiers are never included, and no statistic is released below 100 runs.

Feedback
Report a bug

Found something broken in Content Gap Analyzer? Let us know what happened — this goes straight to a private triage queue, not a public list.

What will be sent 
 No tool inputs, uploads, pasted source, complete results, query parameters, or URL fragments are attached automatically. You can edit or remove the selected passage above. Browser and anti-abuse metadata is processed for spam prevention. 
  
 
  
 
 
  
 
 
      
How to read the result
  • They rank, you do not means no keyword match exists in your uploaded rows.
  • They rank better means your best observed position trails the competitor by at least five positions.
  • You win means that five-position gap is absent; its modeled upside is zero.
  • Structural observations compare supplied crawl and link evidence but do not claim an internal-link difference caused the ranking gap.
  • Topic is a transparent stem-overlap cluster, not an embeddingEmbeddings are dense numerical vectors — lists of floating-point numbers — that represent the meaning of text in a high-dimensional space. Semantically similar content lands close together, so search and AI systems can match by meaning, not just keywords. or SERP-intent classification.
 
Data sources & freshness
The browser parses the two ranking tables, normalizes recognized export headers, and keeps the best competitor row per keyword. Keywords are grouped when their normalized word stems overlap. Optional crawl-page exports add page inlinks, within-site inlink percentiles, depth, and an optional internal-rank percentile. Optional internal-link exports add unique source pages, topic-aligned anchors, generic or empty anchors, reused anchor labels, shallow source pages, and source pages in the top quartile of the supplied inlink or internal-rank distribution.
 
Features
  • Ahrefs- and Semrush-style ranking header recognition.
  • Screaming Frog-, Sitebulb-, and generic crawl/link column aliases.
  • Browser-only analysis with no account connection.
  • Three explicit competitive verdicts and observed URL mapping.
  • Separate structural evidence that never changes the directional-upside model.
  • CSV export with both raw structural metrics and transparent observations.
 
Limitations
Results are only as complete and current as the supplied exports. Crawl scope and site size affect raw inlink totals, so the report also compares each target’s percentile within its own supplied site. Anchor overlap is lexical and does not establish relevance, PageRank flow, or causation. Exact keyword matching can miss synonyms, while stem overlap can group queries with different intent. Search volume and positions are third-party estimates, the CTR curve is generic, and upside ignores conversion rate, backlinks, authority, SERP featuresSERP features are any element on a search results page beyond the classic ten blue links — featured snippets, People Also Ask, knowledge panels, sitelinks, image and video packs, AI Overviews, and structured-data-driven rich results. Google documents that losing rich-result eligibility doesn't affect ranking; their SEO relevance is CTR (they redistribute clicks). Some are unlocked by markup; most are purely algorithmic., content cost, and ranking probability.
 
Frequently asked questions
What data does the Content Gap Analyzer need?
The base analysis needs two Ahrefs- or Semrush-style keyword CSV tables: yours first and a competitor export second. For structural comparison, optionally add paired crawl-page exports with URL plus Inlinks, Crawl Depth, Internal PageRank, or Link Score. Paired internal-link exports with Source, Destination, and Anchor Text add anchor and linking-source evidence.
What does “they rank, you do not” mean?
The competitor export contains the keyword cluster but your export has no matching keyword row. It does not prove your site has no relevant page; it means no match was present in the supplied export.
Can internal links explain why a competitor ranks better?
They can reveal a plausible structural advantage, not prove causation. The report compares supplied inlinks, within-site percentiles, crawl depth, topic-aligned anchors, and linking-source support separately from the ranking and traffic-upside model.
Is estimated upside a traffic forecast?
No. Upside is a directional prioritization value: the best competitor position in the topic multiplied by its supplied search volume and a conservative default click-through-rate curve.
Does the tool call Ahrefs or Semrush?
No. You supply exports you are authorized to use, and analysis stays in your browser. The tool does not fetch rankings or enrich the files with live data.
 
 
Next stepHeading Structure Checker — verify it with a direct check.

People also explore
ToolAI Content Brief GeneratorToolLink AnalyzerToolImage SEO CheckerArticleHTTPS for SEOArticleIndexingArticleTechnical SEO
 
 
 
Feature requests for Content Gap Analyzer
 

Upvote what you want most. New ideas can be submitted from the floating Feedback menu;
      requests appear here once approved, and the most-wanted rise to the top.

   
Loading…
  
  ➕ Request a feature   
New requests are reviewed before they appear here.
 
     
  
  
 
 
 
 
     
   
À propos de l’outil
Comparez les requêtes et thèmes où les concurrents se classent mais où votre site manque de couverture, afin de prioriser un contenu réellement utile.
Fonctionnalités
  • Écarts de thèmes et de requêtes regroupés par intention.
  • Comparaison de votre couverture avec plusieurs concurrents.
  • Preuves issues des exports GSC et des données de classement.
  • Traitement local avec export du backlog priorisé.
Fonctionnement
Le moteur normalise les lignes de requêtes, regroupe les thèmes et compare la présence de votre site à celle des concurrents. Il signale les thèmes absents, les couvertures faibles et les intentions en doublon pour former un backlog de pages à revoir.
Limites
  • Le classement concurrent signale une demande, pas un contenu à copier.
  • Les exports peuvent être incomplets à cause des seuils de confidentialité et des filtres.
  • Le score ne connaît ni priorité métier, ni effort, ni qualité éditoriale.
Questions fréquentes
Qu’est-ce qu’un gap de contenu ?
C’est un thème ou une intention où des concurrents se classent alors que votre site n’a pas de couverture comparable.
Puis-je copier les pages concurrentes ?
Non. Utilisez leur classement comme preuve de demande et créez une réponse originale et plus utile.
Les exports GSC sont-ils complets ?
Non. Les seuils de confidentialité, les filtres et la période peuvent omettre des requêtes.