All the Tools You Need, All in One Place.
Free online tools for calculations, conversions, images, text, and more. Fast, simple and easy to use.
338+Focused Tools
11Categories
No SignupVisitor account
Browser-FirstWhere supported
Clear ResultsGuidance included
Website Tools
89 focused utilities
Website Uptime Checker
Check if any website is online or down instantly.
Website Speed Test
Analyze page loading speed and response time.
HTTP Status Checker
Check HTTP status codes and server responses.
SSL Checker
Verify SSL certificate validity and expiry date.
DNS Lookup
Find DNS records for any domain name.
Redirect Checker
Trace URL redirects and final destination.
Domain Expiry Checker
Check domain registration and expiry dates.
Broken Link Checker
Scan a page and find broken internal or external links.
Robots.txt Generator
Generate a clean robots.txt file for your website.
XML Sitemap Generator
Generate a simple XML sitemap from your URLs.
Meta Tag Generator
Generate title, description and social meta tags.
Open Graph Preview Tool
Preview how your content appears when shared.
Twitter Card Preview Tool
Preview a Twitter/X social card instantly.
Keyword Density Checker
Analyze keyword frequency and density in your text.
SERP Preview Tool
Preview your Google search result snippet.
Robots.txt Checker
Validate a robots.txt file and spot common issues.
Sitemap URL Extractor
Extract all URLs from an XML sitemap.
Hreflang Tag Generator
Generate hreflang tags for multilingual pages.
Schema Markup Generator
Generate basic JSON-LD schema markup.
Canonical URL Checker
Extract and inspect canonical tags from HTML.
Security Headers Checker
Check important website security headers.
Mixed Content Checker
Find insecure HTTP assets on HTTPS pages.
All-in-One Website Health Checker
Audit uptime, SSL, redirects, headers, SEO and page health.
DNS Propagation Checker
Compare DNS records across trusted public resolvers.
IP Blacklist Checker
Check whether an IP appears on common DNS blacklists.
SPF Record Checker
Find and validate a domain SPF email policy.
DKIM Record Checker
Verify a DKIM public key using its selector.
DMARC Record Checker
Inspect a domain DMARC policy and reporting settings.
DMARC Record Generator
Build a valid DMARC DNS record with guided options.
Email Header Analyzer
Parse email headers and review delivery and authentication details.
Port Checker
Test a permitted public service port on a remote host.
Website Ping Test
Measure DNS and secure HTTP response latency.
Safe Route Diagnostic
Resolve a public host and inspect network ownership without shell access.
Website Screenshot Generator
Create desktop or mobile website screenshot previews.
CMS Detector
Detect WordPress, Shopify, Wix and other common platforms.
Hosting Provider Checker
Find the public IP, ASN and network provider for a domain.
Subdomain Finder
Discover public subdomains from certificate transparency records.
HTTP Headers Viewer
View response headers returned by a public website.
Website Technology Detector
Detect frameworks, analytics, CDN and common site technologies.
WHOIS / RDAP Lookup
Look up public domain registration data using RDAP.
DNSSEC Checker
Check DS and DNSKEY records for a domain.
MX Record Lookup
Find mail exchanger records and priorities for a domain.
Reverse DNS Lookup
Find the PTR hostname associated with a public IP address.
IP & ASN Information
Review public IP, ASN, network provider and approximate region information.
HTTP/2 & HTTP/3 Checker
Inspect protocol hints and Alt-Svc headers for HTTP/2 and HTTP/3 support.
CDN & Cache Detector
Detect common CDN signatures and inspect caching headers.
Website Cookie Scanner
List cookies set by the initial public page response.
Bulk URL Status Checker
Check HTTP status and response time for up to 20 public URLs.
XML Sitemap Validator
Validate sitemap XML, URL limits and public URL entries.
Schema Markup Validator
Extract and validate JSON-LD structured data from a public webpage.
Page Size & Resource Checker
Measure HTML size and count common page resources.
TTFB Checker
Measure time to first byte and total initial response time.
Email Deliverability Checker
Review MX, SPF and DMARC setup without sending an email.
Ads.txt Checker & Validator
Check whether a root ads.txt file is reachable and review its authorized seller records.
Live Robots.txt Tester
Fetch a website robots.txt file and review user-agent, allow, disallow and sitemap directives.
Live Canonical URL Checker
Fetch a public page and inspect its live rel=canonical declaration.
Meta Title & Description Analyzer
Review a live page title, meta description, robots directive and primary heading.
Open Graph & Social Card Checker
Inspect live Open Graph and Twitter/X card metadata used for social previews.
Internal & External Link Extractor
Extract public page links and separate internal, external and nofollow destinations.
Broken Image Checker
Find page images and test a bounded sample for missing or failed image responses.
Gzip & Brotli Compression Checker
Inspect live response headers for content compression and variation signals.
Website IPv6 Support Checker
Check whether a public hostname publishes one or more IPv6 AAAA records.
Website Favicon Checker
Find declared favicon files and verify whether the primary icon is reachable.
Live Hreflang Checker
Inspect alternate-language link tags and review language or region values.
Webpage Keyword Density Checker
Calculate a supplied phrase frequency against readable text fetched from a public page.
HTTP Cache Header Checker
Review Cache-Control, ETag, Expires, Age, Last-Modified and Vary headers.
CORS Headers Checker
Inspect public response headers for cross-origin resource sharing declarations.
XML Sitemap URL Analyzer
Fetch an XML sitemap or sitemap index and count its declared page locations.
Page Indexability Checker
Review HTTP status, robots directives, canonical URL and common page-level indexing blockers.
Image Alt Text Checker
Find images with useful, empty or missing alt attributes on a public page.
Lazy Loading Checker
Check image and iframe loading attributes without running a synthetic lab test.
Heading Structure Checker
Review live H1–H6 counts and heading order for a public webpage.
Webpage Word Count Checker
Measure readable page words, paragraphs, characters and estimated reading time.
Website Image Extractor
Extract, preview and export public image URLs found on a webpage.
Webpage Text & Article Extractor
Extract the title, article text, headings and reading statistics from a public webpage.
Website Font Finder
Find declared font families, web-font files and @font-face rules used by a public webpage.
Website Asset Extractor
List public stylesheets, scripts, images, media, fonts and document assets referenced by a webpage.
Website Color Palette Extractor
Extract commonly declared HEX, RGB and HSL colours from webpage HTML and sampled CSS.
Security.txt Generator & Checker
Create a standards-oriented security.txt draft or inspect the file published by a website.
Referrer-Policy Generator & Checker
Compare referrer policy choices, generate a header and inspect a live page declaration.
XML Sitemap Comparison Tool
Compare two public XML sitemaps to find added, removed and unchanged URL entries.
Website Migration URL Validator
Check old and new URL pairs for status, redirect destination and migration mismatches.
HTTP Header Comparison Tool
Compare response status and important HTTP headers returned by two public URLs.
HTML Table to CSV & JSON Extractor
Extract accessible table rows from a public webpage or pasted HTML and export CSV or JSON.
RSS & Atom Feed Finder
Discover linked RSS or Atom feeds on a public website and validate their basic XML structure.
Website Contact & Social Link Extractor
Find public email, telephone and supported social-profile links declared on a webpage.
Webpage Content Comparison Tool
Compare readable text from two public webpages and highlight additions, removals and similarity.
Website Charset & Language Checker
Inspect a page language declaration, character encoding and content-language response header.
URL Structure Analyzer
Break a URL into origin, path, query, fragment and SEO-relevant structural observations.