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SEO Analysis: atcoder.jp

atcoder.jp

Scanned April 28, 2026

65
Overall score
0
Performance
55
SEO
66
Accessibility
73
Best Practices
72
Security
51
seo.statTotalChecks
22
seo.statModulesRun

Backlink Profile

0
Total Backlinks
5,934
Referring Domains
563
Domain Rank

Total findings

51

8 high / 23 medium / 17 low

Scan time

2.8s

22 modules scanned

Technologies

4

Google Analytics, AWS CloudFront, Bootstrap

SSL

Issue

—

Analyzed with 29 professional SEO tools

Each module scans a specific aspect of your domain

⚡Page speed & Core Web Vitals
🔒SSL certificate validation
🛡️Security headers (HSTS, CSP, X-Frame)
🌐DNS configuration & SPF/DMARC
🏷️Meta tags, title & descriptions
📊Schema.org & rich results
🤖Robots.txt & crawl directives
🗺️XML sitemap validation
🔧Tech stack & vulnerabilities
📝Content quality & keyword coverage
📱Mobile-friendliness & viewport
♿WCAG accessibility checks
🔗Internal & external link audit
🍪GDPR cookie compliance
⚠️WAF & rate limiting detection
🌍Translation quality scoring
📐AI layout evaluation
📰Brand mentions in news
🌏Internationalization & hreflang
🔀Orphan page detection
💬OG & Twitter Card validation
📈LCP, FID, CLS metrics
⏱️Uptime & response time
🏢Brand consistency audit
🕷️Crawl budget optimization
✨Interstitial & UX signals
🔍Indexing & canonical checks
📋Server log analysis

What you'd get with LANGR Pro

🔒Keyword TrackingTrack 100+ keywords daily
🔒Competitor AnalysisCompare against top 5 competitors
🔒Network CrosslinksAuto crosslinks with relevant sites

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SEO Analysis of atcoder.jp

The SEO analysis of atcoder.jp reveals an overall score of 65/100. Performance scores 0/100, SEO scores 55/100, accessibility reaches 66/100, security is 72/100, and best practices scores 73/100.

Performance

The performance score of 0/100 is poor. Page load time and responsiveness impact both user experience and search engine rankings.

SEO

The SEO score of 55/100 is needs improvement. The site lacks a sitemap and has 51 SEO-related issues.

Accessibility

The accessibility score of 66/100 is needs improvement. The site is mobile-friendly.

Security

The security score of 72/100 is good. The site lacks proper SSL configuration.

Best Practices

The best practices score of 73/100 is good. This covers technical standards and modern web development practices.

Recommendations

atcoder.jp scores 65/100 — good foundations with clear growth potential. Targeted changes can make a real difference. Start with the 8 critical findings.