68,803 sites measured · Global
Every site has mistakes. Here are the common ones.
We check thousands of popular websites for 57 typical issues. See how common each one is — and how to fix it on your site.
Global
The most common mistakes
Share of sites with each issue on the homepage, in DNS or in headers.
- 1No DNSSECDNS91%82,286
- 2No CAA recordDNS86%77,955
- 3No Content-Security-PolicySecurity70%47,342
- 4No IPv6DNS64%58,040
- 5No X-Content-Type-OptionsSecurity54%36,510
- 6No structured dataSEO51%34,812
- 7No Open Graph tagsContent50%34,533
- 8No clickjacking protectionSecurity50%33,914
- 9No HSTS headerSecurity47%31,957
- 10No DMARC recordEmail36%32,277
- 11No canonical linkSEO35%24,157
- 12No H1 headingSEO34%23,557
- 13No XML sitemapSEO32%22,095
- 14No robots.txtSEO28%19,307
- 15Cookies without the Secure flagSecurity25%17,258
15 tools
Free tools
No sign-up. Everything runs right in your browser.
SERP snippet previewPreview title and description in searchrobots.txt generatorCrawler rules incl. AI botsrobots.txt testerIs this path allowed for this bot?hreflang generatorLanguage versions for search enginesSchema.org generatorStructured data in JSON-LDRedirect generatorRedirect rules for your serverMeta tags generatorEssential head tags in one blockSitemap generatorXML sitemap from a URL listKeyword density checkerWord and phrase frequency in a text
Markets
Markets compared
The same checks on popular sites in seven markets.
| Metric | Global | United Kingdom | Netherlands | Italy | Spain | Japan | Latin America |
|---|---|---|---|---|---|---|---|
| Sites with ≤ 5 issues | 12% | 11% | 20% | 5.3% | 7.5% | 1.8% | 7.5% |
| Title 31–70 characters | 56% | 62% | 62% | 58% | 62% | 27% | 53% |
| Meta description | 81% | 82% | 82% | 79% | 81% | 85% | 73% |
| Canonical link | 65% | 74% | 70% | 71% | 73% | 49% | 66% |
| Exactly one H1 | 54% | 61% | 60% | 50% | 58% | 58% | 44% |
| HSTS | 53% | 53% | 55% | 40% | 49% | 33% | 45% |
| DMARC record | 64% | 36% | 43% | 67% | 66% | 61% | 67% |
| Mixed content | 1.2% | 1.5% | 0.7% | 2.3% | 1.9% | 2.2% | 2.6% |
Global
Data
Measured by our crawler, refreshed continuously.
Common mistakes12%Sites with ≤ 5 issues11%No compressionSEO basics56%Title 31–70 characters81%Meta descriptionSecurity headers53%HSTS30%Content-Security-PolicyEmail authentication76%SPF record64%DMARC recordHTTPS & certificates98%HTTPS homepage85%HTTP → HTTPS redirectStructured data46%JSON-LD structured data50%Open Graph
Services
Fix services
Audits and fix sprints.
Technical SEO auditCrawlability, indexing, speed and structured data — with a fix list.Full-site crawlIndexing and canonicalsRedirects and errors DetailsSecurity headers auditHSTS, CSP, cookies and TLS reviewed and fixed.Header scan of key pagesCSP designCookie flags DetailsEmail deliverability auditWhy your emails land in spam — and how to fix it.SPF/DKIM/DMARC reviewSender reputationList hygiene DetailsPerformance auditWhat slows your site down, measured and ranked.Lab and field dataWaterfall analysisThird-party impact DetailsAccessibility auditWCAG 2.2 review with concrete fixes — not an overlay.Automated and manual checksScreen reader testingContrast and focus DetailsFix sprintWe fix the issues from your audit — in one focused sprint.Redirects and canonicalsMeta and structured dataHeaders and TLS Details
Found mistakes on your site?
We can fix them in one sprint. Reply within one business day.