Best Free Website Checking Tools in 2026
By Tibzi Team — 2026-03-03T14:47:19.153Z
There are dozens of online tools for checking websites, but they are not all equally useful. We tested and picked the 15 best free tools available in 2026, grouped by category. For each one, we explain what it does, what it checks, and its strengths and limitations.
All-in-One Tools
1. Tibzi — Complete Website Audit
- What it checks: 27 modules — security (SSL, headers, ports, WAF, blacklists), SEO (meta tags, content, hreflang, duplicates, links), performance (Web Vitals, TTFB), email (SPF, DKIM, DMARC), legal compliance (GDPR, cookies, company details), accessibility (WCAG 2.1)
- Output: Detailed PDF report with a score per module, issues and recommendations
- Cost: First audit free, re-audit 250 RON
- Strengths: All-in-one tool, 27 modules in a single analysis, PDF report, plain-language explanations
- Limitations: Automated analysis (no manual audit included)
- Link: tibzi.com
Security
2. Tibzi — Security Check (focused)
- What it checks: SSL, security headers, open ports, WAF, blacklists, information disclosure
- Strength: Fast (~15s), plain-language explanations, free and no account needed
- Link: tibzi.com/security-check
3. SecurityHeaders.com
- What it checks: HTTP security headers (HSTS, CSP, X-Frame, etc.)
- Strengths: Easy-to-understand A-F grade, free, fast
- Limitations: Headers only — nothing else.
4. Sucuri SiteCheck
- What it checks: Malware, blacklists, site errors, outdated software
- Strengths: Specialized in malware detection
- Limitations: Shallow scan in the free version
SSL / TLS
5. Tibzi — SSL Check
- What it checks: Certificate validity, TLS version, forward secrecy, key strength, cipher suites
- Strength: Results with plain-language explanations
- Link: tibzi.com/ssl-check
6. Qualys SSL Labs (SSL Server Test)
- What it checks: Extremely detailed SSL/TLS analysis — protocols, ciphers, vulnerabilities
- Strengths: The global reference, exhaustive analysis
- Limitations: Takes 2-3 minutes, technical interface
SEO
7. Tibzi — SEO Audit
- What it checks: Meta tags, headings, content, hreflang, duplicate content, broken links
- Strength: 5 SEO modules, free, plain-language explanations
- Link: tibzi.com/audit-seo
8. Google Search Console
- What it checks: Indexing, Core Web Vitals, crawl errors, links, mobile usability
- Strengths: Data straight from Google, completely free, detailed history
- Limitations: Requires ownership verification, can't check competitors
9. Ahrefs Webmaster Tools (free)
- What it checks: Backlinks, organic keywords, technical SEO audit, site health
- Strengths: The most complete SEO tool with a free tier
- Limitations: Only for your own sites (verification required), limited analysis compared to the paid plan
Performance
10. Tibzi — Performance Test
- What it checks: Core Web Vitals, TTFB, compression, images, render-blocking resources, carbon footprint
- Strength: Plain-language explanations, includes the carbon footprint
- Link: tibzi.com/performance-check
11. Google PageSpeed Insights
- What it checks: Core Web Vitals (real-user data + lab data), Lighthouse audit, optimization opportunities
- Strengths: The global reference, real-user data from the Chrome UX Report
- Limitations: Performance only, technical recommendations that are hard to interpret
12. GTmetrix
- What it checks: Lighthouse performance, waterfall chart, monitoring history
- Strengths: Excellent waterfall chart for debugging, comparison with other sites
- Limitations: 1 free test per day from a limited set of locations
13. Tibzi — Email Check
- What it checks: SPF, DKIM, DMARC, MTA-STS, BIMI, TLS-RPT, MX records
- Strength: The most complete, free, plain-language explanations
- Link: tibzi.com/email-check
14. MXToolbox
- What it checks: MX records, SPF, DMARC, blacklists, DNS
- Strengths: The go-to reference for email diagnostics, lots of tools
- Limitations: Cluttered interface, ads can be distracting
GDPR and Accessibility
15. Tibzi — GDPR and Accessibility Checks
- GDPR: Privacy policy, cookies, company details, ANPC (Romania's consumer protection authority), SAL pictogram — gdpr-check
- Accessibility: WCAG 2.1 AA, headings, alt text, ARIA, contrast — accessibility-check
- Strength: The only free tools that check Romanian legal compliance (Legea 365/2002, the Romanian e-commerce law; ANPC; CUI, the Romanian company tax ID)
Summary Comparison Table
| Tool | Security | SEO | Speed | Legal | |
|---|---|---|---|---|---|
| Tibzi | Yes | Yes | Yes | Yes | Yes |
| SecurityHeaders | Partial | No | No | No | No |
| SSL Labs | SSL only | No | No | No | No |
| PageSpeed | No | No | Yes | No | No |
| Search Console | No | Yes | Yes | No | No |
| MXToolbox | No | No | No | Yes | No |
Conclusion
Every tool has its place. If you want a quick, complete check, Tibzi covers all 6 categories in a single audit. For very specific analyses (backlinks, index monitoring), pair it with Google Search Console and Ahrefs Webmaster Tools.
Start now with a free complete audit — 27 modules, a detailed PDF report, results in 60 seconds.