Free HTTP, SEO & Web Analysis Tools
Check status codes, analyze SEO, test page speed, validate SSL, scan for malware — all with real-time results.
Most Popular Tools
Our most-used tools for web analysis and debugging
HTTP Status Checker
Bulk check status codes, redirects, and headers for up to 100 URLs at once.
Try itSEO Checker
Full on-page SEO audit with scoring across 15 checks and actionable recommendations.
Try itPage Speed Test
Core Web Vitals and Lighthouse performance scoring with optimization tips.
Try itVirus Scanner
Scan URLs, domains, IPs, and file hashes against 70+ security vendors.
Try itSSL Checker
Verify SSL/TLS certificate validity, expiration, issuer, and cipher details.
Try itMeta Tag Analyzer
Preview how pages look in Google and social media with full meta tag analysis.
Try itExplore All Tools
Browse by category or press Ctrl+K to search
HTTP Tools
8 tools available
HTTP Status Checker
Bulk check status codes for 100 URLs
Redirect Checker
Follow redirect chains step by step
Header Checker
Inspect response headers & security
SSL Checker
Verify SSL certificate validity
HTTP/2 & HTTP/3
Check protocol support
CORS Tester
Test CORS headers
Ping Test
Measure server latency
Traceroute
Trace network path
Debug HTTP requests like a pro
Diagnose server response issues, trace redirect chains, inspect security headers, and measure response times — all the tools you need to understand how your server communicates with browsers and search engine crawlers.
Trace every 301/302 hop and find redirect loops before they hurt your SEO rankings.
Check SSL certificates, CORS policies, and HTTP/2 support to ensure your site meets modern standards.
Measure ping latency and traceroute paths to identify network bottlenecks affecting load times.
DNS & Domain
10 tools available
DNS Lookup
Query all DNS record types
WHOIS Lookup
Domain registration details
MX Record
Check mail server config
NS Checker
DNS propagation check
Reverse IP
Find domains on same IP
Subdomain Finder
Discover subdomains
IP Geolocation
IP location & ISP info
ASN Lookup
AS number & network info
Port Scanner
Check open ports
TLS Checker
Check TLS versions
Master your domain infrastructure
Query DNS records, check WHOIS registration data, verify mail server configuration, and monitor nameserver propagation. Essential tools for domain administrators and anyone managing web infrastructure.
Query 8+ global DNS servers simultaneously to verify your DNS changes have propagated worldwide.
Validate MX records and check that your mail servers are properly configured and reachable.
Look up ASN data, geolocate IP addresses, scan open ports, and discover subdomains on any domain.
SEO Analysis
9 tools available
SEO Checker
Full on-page SEO audit
Meta Tag Analyzer
Meta tags & social previews
Heading Checker
H1-H6 hierarchy check
Image Alt Checker
Find missing alt text
Robots.txt Checker
Validate robots.txt
Sitemap Validator
Validate XML sitemap
Canonical Checker
Check canonical URLs
Schema Validator
Validate JSON-LD
GZIP Test
Check compression
Optimize your search engine visibility
Run comprehensive on-page SEO audits that check title tags, meta descriptions, heading structure, image alt text, schema markup, and more. Get actionable recommendations to improve your search rankings.
Get a 0-100 SEO score based on 15 checks across content, technical, and social categories.
Verify robots.txt, XML sitemaps, canonical tags, and JSON-LD schema markup are correctly implemented.
Test GZIP/Brotli compression to ensure your server delivers optimized responses to browsers.
Content & Links
8 tools available
Page Speed Test
Core Web Vitals & Lighthouse
Keyword Density
Analyze keyword frequency
Text-Code Ratio
HTML content ratio
SERP Preview
Google search preview
External Links
Find outbound links
Internal Links
Analyze internal linking
Anchor Text
Extract anchor texts
Favicon Checker
Check favicon & app icons
Analyze content quality and link structure
Measure page speed with Core Web Vitals, analyze keyword density, preview Google search results, and audit your internal and external linking strategy — everything you need for content optimization.
Get Lighthouse performance scores with LCP, FCP, TBT, and CLS metrics plus optimization tips.
Find all internal and external links, check dofollow/nofollow attributes, and analyze anchor text distribution.
See exactly how your pages will appear in Google search results before publishing changes.
Security
9 tools available
Security Headers
Grade security headers A-F
Safe Browsing
Check malware & phishing
Virus Scanner
Scan with 70+ vendors
Blacklist Checker
Check DNSBL blacklists
Mixed Content
Find HTTP on HTTPS pages
Cookie Checker
Analyze cookie security
HSTS Checker
HSTS preload status
CSP Evaluator
Grade CSP headers
SPF/DKIM/DMARC
Email auth validation
Protect your website and users
Scan for malware with 70+ antivirus vendors, check DNSBL blacklists, validate security headers, test HSTS and CSP policies, and verify email authentication — comprehensive security auditing for any website.
Scan URLs against VirusTotal's 70+ security engines to detect malware, phishing, and suspicious activity.
Get A-F grades on security headers including CSP, HSTS, X-Frame-Options, and Permissions-Policy.
Validate SPF, DKIM, and DMARC records to prevent email spoofing and improve deliverability.
Dev Tools
8 tools available
JSON Formatter
Format & validate JSON
HTML Validator
Check HTML errors
CSS Minifier
Minify CSS code
JS Minifier
Minify JavaScript
Regex Tester
Test regex patterns
Cron Parser
Explain cron schedules
UA Parser
Parse user-agent strings
Timestamp
Convert Unix timestamps
Essential developer utilities
Format and validate JSON, check HTML for errors, minify CSS and JavaScript, test regular expressions, parse cron schedules, and analyze user-agent strings — everyday tools that save developers time.
Format, validate, and minify JSON, CSS, and JavaScript with instant results and size comparison.
Test regular expressions with live highlighting, capture groups, and common pattern presets.
Convert cron expressions to human-readable descriptions and preview the next 10 execution times.
Encoders & Crypto
5 tools available
URL Encoder
Encode/decode URLs
String Encoder
CharCode, Hex, Base64
Hash Generator
MD5, SHA-1, SHA-256
JWT Decoder
Decode JWT tokens
Password Gen
Generate secure passwords
Encode, decode, and secure data
Convert between URL encoding, Base64, hex, and HTML entities. Generate secure passwords, compute file hashes, and decode JWT tokens — cryptographic and encoding tools for security-conscious developers.
Convert strings between CharCode, hex, Unicode, Base64, HTML entities, and decimal formats.
Calculate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes for text or files instantly.
Decode JWT tokens to inspect headers, payloads, expiration times, and claims.
Utilities
7 tools available
Domain Age
Check registration age
Hosting Checker
Find IP & server info
CMS Detector
Detect WordPress & more
Broken Links
Find dead links
Website Down
Check site uptime
Word Counter
Count words & reading time
What's My IP
Find your public IP
Quick checks and lookups
Check domain registration age, detect CMS platforms, find broken links, verify site uptime, count words, and discover your public IP — handy utilities for quick website checks and everyday tasks.
Instantly check if a website is up or down and find broken links that could hurt user experience.
Identify WordPress, Shopify, and 10+ other CMS platforms with framework and library detection.
Find your public IP with geolocation data, check domain age, and count words with reading time estimates.
Why HTTPChecker?
Built for developers, SEO professionals, and webmasters
Real-Time Results
Every check runs live. No cached or outdated data — fresh results every time.
100% Private
We don't store URLs or results. All data is processed in real-time and discarded.
65 Free Tools
HTTP analysis, SEO auditing, security checks, dev tools — all in one place.
Works Everywhere
Fully responsive. Works on desktop, tablet, and mobile devices.
HTTP Status Code Reference
Quick reference for all HTTP response status codes