Best Free Tools to Analyze Any Website
Whether you're researching competitors, auditing your own site, or evaluating a potential partner, these tools give you deep insights — all free, no signup.
1. Technology Detector
Technology Detector identifies 200+ frameworks, CMS platforms, CDNs, and analytics tools used on any website.
Use case: Competitor research — see what tech stack successful sites use.
2. SEO Analyzer
SEO Analyzer gives a comprehensive SEO score with title, heading, content, and technical analysis.
Use case: Quick SEO health check before launching a campaign.
3. Page Speed Analyzer
Page Speed Analyzer measures load time, blocking resources, and gives optimization recommendations.
Use case: Performance optimization and Core Web Vitals improvement.
4. SSL Certificate Checker
SSL Certificate Checker verifies SSL validity, expiration, and certificate chain.
Use case: Security audit and trust verification.
5. Website Stack Summary
Website Stack Summary provides a one-page overview of CMS, CDN, frameworks, analytics, and security.
Use case: Quick competitive intelligence report.
6. Google Ads Scraper
Google Ads Scraper finds all active ads running for any domain via Google Ads Transparency Center.
Use case: Competitive advertising intelligence.
7. HTTP Security Headers Grader
HTTP Security Headers Grader grades security headers with A-F scoring.
Use case: Security posture assessment.
8. Website Comparison
Website Comparison compares two websites side by side on speed, structure, and SEO.
Use case: Benchmarking against competitors.
9. DNS Record Checker
DNS Record Checker shows all DNS records including email (MX, SPF, DMARC).
Use case: DNS troubleshooting and email config verification.
10. Contact Page Finder
Contact Page Finder discovers contact info, emails, and social profiles.
Use case: Business outreach and partnership research.
Try Them All
All tools above are available at Krawly.io — 170+ free tools, no signup needed.