Free tool · URL checker
Check any URL for SEO and security. Free.
Analyze any website for SEO, social media, technical, and security information. Get comprehensive insights about any URL.
What it checks
What this URL checker analyzes
Check any URL for SEO issues, security problems, and performance bottlenecks. Paste any URL and get a complete breakdown of how the page performs across four critical areas, in seconds.
SEO health
Title tags, meta descriptions, H1 tags, canonical URLs, and indexability status.
Social previews
How your link appears when shared on Facebook, Twitter, and LinkedIn.
Performance
Response times, TTFB, DNS lookup, TLS handshake, and server location.
Security
SSL certificate status, security headers, and vulnerability checks.
SEO
SEO analysis
Title tags
Title tags appear in search results and browser tabs. They're one of the strongest on-page ranking signals. Our URL checker verifies your title is:
- Between 30-60 characters (optimal for search display)
- Present and not empty
- Unique and descriptive
Meta descriptions
Meta descriptions don't directly affect rankings but significantly impact click-through rates. A good description is 120-160 characters, includes a clear value proposition, and encourages clicks.
H1 tags
Each page should have exactly one H1 tag that clearly describes the page content. Our checker flags missing H1s and helps ensure proper heading structure.
Canonical URLs
Canonical tags prevent duplicate content issues by telling search engines which URL version is authoritative. This matters for pages accessible via multiple URLs, parameter variations, or HTTP/HTTPS and www/non-www variants.
Indexability
The checker analyzes robots.txt rules and meta robots tags to determine if search engines can crawl and index your page. You'll see clear warnings if anything blocks indexing.
Social
Social media previews
When someone shares your URL on social media, Open Graph and Twitter Card tags control what appears. Without them, platforms guess, often poorly.
Open Graph tags
Open Graph controls how links display on Facebook, LinkedIn, and most other platforms. Essential tags include:
og:title— Title shown in the share cardog:description— Summary text beneath the titleog:image— Preview image (recommended: 1200×630px)og:url— Canonical URL for the content
Twitter Cards
Twitter uses its own card format. Our site checker verifies:
twitter:card— Card type (summary or summary_large_image)twitter:titleandtwitter:descriptiontwitter:image— Image for the tweet preview
Performance
Performance metrics
Page speed affects both user experience and search rankings. Our URL checker breaks down exactly where time is spent.
- DNS lookup: Time to resolve domain to IP address. Slow DNS? Consider a faster provider or DNS caching.
- Connection time: TCP connection establishment. Affected by server location relative to users.
- TLS handshake: SSL/TLS negotiation for HTTPS. Modern TLS versions and CDNs reduce this.
- Time to First Byte (TTFB): Time until server starts responding. Under 200ms is good. This reflects server processing speed.
- Total time: Complete request including body download.
Server information
The checker also reveals hosting details: server IP and location, hosting provider, CDN detection (Cloudflare, Fastly, Vercel, etc.), and server software (Nginx, Apache).
Security
Security analysis
Security headers protect your site and visitors from common attacks. Our checker evaluates four critical headers.
Content Security Policy (CSP)
CSP prevents cross-site scripting (XSS) by controlling which resources can load. It restricts scripts to trusted sources and blocks inline execution.
X-Frame-Options
Prevents clickjacking by controlling whether your page can be embedded in iframes. Set to DENY or SAMEORIGIN for protection.
X-Content-Type-Options
Set to nosniff to prevent browsers from MIME-type sniffing, which can lead to security vulnerabilities.
Strict-Transport-Security (HSTS)
Forces HTTPS connections, preventing protocol downgrade attacks. Essential for sites handling any sensitive data.
SSL certificate
The checker verifies your SSL certificate is valid, trusted, and not expiring soon. Expired certificates trigger browser warnings that destroy user trust.
How to use it
How to use this website checker
Pro tip: check your pages after any significant changes, and periodically audit competitor sites to see what they're doing right.
- 1
Enter a URL
Paste any web address (with or without https://).
- 2
Click Check
Analysis takes 2-5 seconds.
- 3
Review results
Navigate the tabs for SEO, Social, Technical, and Security details.
- 4
Fix issues
Address any warnings or missing elements.
Checklist
Quick optimization checklist
SEO essentials
- Unique title tag (30-60 characters) on every page
- Compelling meta description (120-160 characters)
- Single, descriptive H1 tag
- Canonical URL set correctly
- Page is indexable (no accidental noindex)
Performance
- TTFB under 200ms
- Use a CDN for global reach
- Enable compression (gzip/brotli)
- Optimize images and enable caching
Security
- Valid SSL certificate (not expiring soon)
- All four security headers configured
- HSTS enabled for HTTPS enforcement
FAQ
Frequently asked questions
What's the difference between a URL checker and a site checker?
A URL checker analyzes a single page. A full site checker crawls your entire website. This tool checks individual URLs, which is faster and useful for spot-checking specific pages.
How often should I check my URLs?
Check after publishing new pages, making significant updates, or changing hosting/CDN configuration. Monthly audits of key pages catch issues before they impact rankings.
What's a good TTFB (Time to First Byte)?
Under 200ms is good. 200-500ms is acceptable. Over 500ms suggests server or configuration issues worth investigating.
What security score should I aim for?
100% means all four security headers are present. Aim for at least 75% (three headers). CSP can be complex to implement but the others are straightforward.
Can I check competitor websites?
Yes. The tool works on any public URL. Analyzing competitors reveals their SEO strategies, hosting setup, and security posture.
Why is my page marked as not indexable?
Common causes: a noindex meta tag, robots.txt blocking crawlers, or canonical pointing elsewhere. Check the SEO tab for specific details.
Is this tool free?
Yes, completely free. We rate-limit to 10 checks per minute per IP to ensure availability for everyone.
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