Free SEO Tools

120 Professional
SEO Tools — Free

Domain research, technical audits, on-page SEO, DNS, security, and performance — all in one place. No account. No limits.

120 Tools
6 Categories
✅ No Signup
⚡ Instant Results
🔍 120 tools

🔍 Domain & WHOIS

9 tools
🔍
WHOIS Lookup
Check domain registration details, ownership, expiry date, registrar, and nameservers instantly.
WHOISRegistrarExpiry
📅
Domain Age Checker
Find exactly how old a domain is — years, months, and days from first registration date.
Domain AgeRegistrationSEO
Domain Availability
Check if a domain name is available for registration. Bulk check up to 10 domains at once.
AvailabilityBulk CheckRegistration
Wayback Machine Checker
Check website archive history. See total snapshots, first archived year, and browse historical versions.
ArchiveHistorySnapshots
⏱️
Drop Date Estimator
Estimate when an expiring domain will be available. Calculates grace period, redemption, and drop date from RDAP data.
Drop DateRDAPGrace Period
💎
Domain Valuation
Estimate the market value of any expired domain based on DA, backlinks, age, TLD, and niche. Auto-fills from our database.
AppraisalMarket ValuePrice
💡
Domain Name Generator
Generate creative, brandable domain name ideas from any keyword. 60+ suggestions with availability check links.
Name IdeasBrandableAvailability
📋
Bulk Domain Availability
Check availability of up to 20 domains simultaneously via RDAP. No signup required. Instant results.
Bulk CheckRDAPAvailability
🔁
Reverse IP Lookup
Find all domains hosted on the same IP. Check shared hosting density and its SEO implications.
Reverse IPShared HostingDomain
📜
Domain History
Full timeline of a domain — ownership changes, category shifts, and historical snapshots. Essential due diligence for domain investors.
HistoryOwnershipTimeline
⚖️
Registrar Compare
Compare domain registrar pricing, transfer policies, renewal costs, and features across top registrars side by side.
RegistrarPricingCompare

📡 DNS & Email

7 tools

📝 On-Page SEO

10 tools
🏷️
Meta Tag Checker
Analyze title, meta description, OG tags, Twitter cards, canonical, and robots directives in one check.
Meta TagsOG TagsTwitter Card
📋
SERP Preview Tool
Simulate how your page looks in Google search results. Check title length, meta description, and URL display.
SERPTitle TagMeta Desc
📱
Open Graph Preview
Preview share cards on Facebook, Twitter/X, and LinkedIn. Check all OG and Twitter meta tags instantly.
OG TagsSocial ShareTwitter Card
🔗
Canonical URL Checker
Detect canonical tags from HTML and HTTP headers. Find missing, conflicting, or incorrect canonical declarations.
CanonicalDuplicate ContentSEO
📊
Keyword Density Checker
Analyze keyword frequency and density on any URL. Check for over-optimization or under-coverage.
Keyword DensityOn-PageContent
📝
Word Count & Readability
Count words, estimate reading time, and get Flesch readability score. Check heading structure and image count.
Word CountReadabilityFlesch
🗺️
Internal Link Analyzer
Map all internal and external links on a page. Check anchor text distribution and nofollow usage.
Internal LinksAnchor TextAudit
🌍
Hreflang Checker
Validate hreflang tags for international SEO. Detect missing x-default, duplicate lang codes, and header tags.
International SEOHreflangx-default
🧩
Schema Markup Validator
Validate JSON-LD structured data. Check rich result eligibility for FAQ, Product, Article, and more.
JSON-LDRich ResultsStructured Data
🔑
TF-IDF Keyword Extractor
Extract the most important keywords from any URL using TF-IDF. Word cloud, bigrams, and prominence scoring.
TF-IDFKeywordsOn-Page SEO
🖼️
Open Graph Checker
Audit all Open Graph tags on any URL. Validate og:title, og:description, og:image size and ratio for perfect social sharing.
OG TagsSocialPreview
🗂️
Schema Markup Checker
Validate and visualize all structured data on a page. Detects JSON-LD, Microdata, and RDFa. Highlights errors and warnings.
JSON-LDStructured DataRich Snippets
📊
TF-IDF Analyzer
Measure term frequency vs. inverse document frequency for any URL. Identify under- and over-optimized keyword usage on a page.
TF-IDFKeywordsContent
📖
Readability Checker
Score content readability using Flesch-Kincaid, Gunning Fog, and SMOG indexes. Optimize for audience reading level.
Flesch-KincaidReadabilityContent

⚡ Performance & Technical

10 tools
PageSpeed Checker
Test Core Web Vitals via Google PageSpeed Insights. LCP, CLS, FCP scores — mobile and desktop modes.
Core Web VitalsLCPPerformance
🔒
SSL Certificate Checker
Verify SSL certificate validity, expiry date, issuer, and days remaining. Detect HTTPS misconfiguration.
SSL/TLSHTTPSCertificate
🔀
Redirect Chain Checker
Trace every HTTP redirect hop. Detect chains, loops, and status codes that waste link equity.
301 RedirectChain AuditHTTP Status
📡
HTTP Status Checker
Check HTTP status codes for multiple URLs at once. Detect 200, 301, 404, 500 and more in bulk.
Status CodesBulk Check404 Finder
📋
HTTP Headers Inspector
Inspect all HTTP response headers. Check security headers score, cache control, and server info.
HTTP HeadersCacheServer
🤖
Robots.txt Viewer
View and analyze robots.txt for any domain. Check crawl rules, disallows, and sitemap references.
Robots.txtCrawl RulesSitemap
🗺️
Sitemap Finder
Locate and parse the XML sitemap for any domain. View URL count, structure, and sample URLs.
XML SitemapURL CountIndex
🛡️
Security Headers Checker
Check HTTP security headers: HSTS, CSP, X-Frame-Options, X-XSS-Protection. Get a security grade A–F.
HSTSCSPSecurity Grade
⚙️
GZIP Compression Checker
Test if your server uses GZIP or Brotli compression. See file size savings and performance improvements.
GZIPBrotliPerformance
🚀
HTTP/2 Checker
Check if a website supports HTTP/2 or HTTP/3 (QUIC). See protocol version and performance recommendations.
HTTP/2HTTP/3Protocol
🏆
Core Web Vitals Test
Test LCP, CLS, FID, INP, and TTFB for any URL. See pass/fail status with improvement tips for Google's ranking signals.
LCPCLSPerformance
📱
Mobile-Friendly Test
Check if a website passes Google mobile-friendly criteria. Detect viewport issues, tap target sizes, and font scaling problems.
MobileResponsiveGoogle
⏱️
TTFB Checker
Measure Time to First Byte for any URL. Diagnose slow server response times that inflate Core Web Vitals and hurt rankings.
TTFBServer SpeedCWV

💻 Technology & Hosting

5 tools

🔧 Utilities

9 tools

📨 Email & Security

6 tools

📣 Content & Marketing

7 tools
⏱️
Reading Time Calculator
Calculate reading time for any text or URL. Shows word count, sentence count, and content length grade.
Reading TimeWord CountBlog
📊
Word Frequency Counter
Analyze word frequency in any text. Bar chart of top words with stop word filtering. Great for content audits.
Word FrequencyText AnalysisTF
🔢
Character Counter
Count characters, words, sentences, and paragraphs. Real-time Twitter, Meta description, and title limits.
CharactersWordsLimits
#️⃣
Hashtag Generator
Generate relevant hashtags for Instagram, Twitter, TikTok, and LinkedIn from any keyword or topic.
HashtagsInstagramSocial Media
Anchor Text Generator
Generate diverse anchor text variations — exact match, partial, branded, LSI, and generic. Essential for link building.
Anchor TextLink BuildingSEO
🎭
Typosquat Finder
Find typosquatting variations of your domain. Detect potential brand impersonators via omission, repetition, and substitution.
TyposquattingBrandProtection
🔖
UTM Link Builder
Build UTM-tagged URLs for Google Analytics campaign tracking. Generate source, medium, campaign parameters instantly.
UTMAnalyticsCampaigns
🔗
UTM Parameter Parser
Decode and analyze any URL with UTM parameters. Extract campaign source, medium, name, content, and term from complex tracking URLs.
UTMAnalyticsCampaign
🔎
SERP Snippet Generator
Generate and preview Google SERP snippets. Optimize title and meta description to maximize click-through rate in search results.
SERPMetaCTR
📲
Social Media Preview
Preview how any URL looks when shared on Facebook, Twitter/X, LinkedIn, and WhatsApp. Diagnose OG tag issues before publishing.
SocialPreviewOG Tags

🌍 Network & IP

6 tools

🔭 Domain Advanced

5 tools

⚙️ Developer Tools

14 tools
🔍
Regex Tester
Test and debug regular expressions with real-time match highlighting. Shows all matches and capture groups.
RegexPatternDebugger
🗜️
CSS Minifier
Minify CSS code instantly. Removes comments and whitespace. Shows exact file size reduction percentage.
CSSMinifyCompress
🗜️
HTML Minifier
Minify HTML code instantly. Remove comments and whitespace to reduce page size by 20-40%.
HTMLMinifyCompress
{}
JSON Formatter
Format, validate, and minify JSON instantly. Syntax error detection and one-click copy.
JSONFormatValidate
Timestamp Converter
Convert Unix timestamps to dates and back. Live current timestamp, batch presets. Essential for developers.
Unix TimeEpochDate
🔢
Number Base Converter
Convert numbers between binary, octal, decimal, hex, base 36, and base 64 instantly.
BinaryHexBase
📋
Text Diff Checker
Compare two text blocks side by side. Highlights additions and deletions word by word.
DiffCompareChanges
🔤
HTML Entity Encoder
Encode or decode HTML entities. Convert < > & © ™ and all special characters.
HTML EntitiesEncodeEscape
🛡️
CSP Header Generator
Build Content Security Policy headers visually. Get ready-to-paste Apache and Nginx config lines.
CSPSecurityHeaders
🔄
PTR / Reverse DNS Lookup
Look up reverse DNS (PTR records) for any IP address. Check rDNS for email deliverability.
PTRReverse DNSrDNS
🖥️
User Agent Parser
Parse any user agent string. Detects browser, OS, device type, and bot status instantly.
User AgentBrowserBot
⏱️
Cron Expression Generator
Build cron expressions visually with presets. Supports Linux, cPanel, and cloud schedulers.
CronSchedulerLinux
🔗
URL Slug Generator
Convert any title to a clean, SEO-friendly URL slug. Custom separator, length, and case options.
SlugURLSEO
🔤
Text Case Converter
Convert text between Title Case, UPPER, lower, camelCase, PascalCase, snake_case, and kebab-case.
Title CasecamelCaseConverter
🔑
JWT Decoder
Decode and inspect JSON Web Tokens instantly. View header, payload, and signature. Verify expiry and claims without sending data.
JWTTokenAuth
🌐
IPv6 Converter
Convert, expand, compress and validate IPv6 addresses. Convert between full, compressed, and mixed IPv4/IPv6 notation.
IPv6IPNetworking
🖼️
Base64 Image Encoder
Convert images to Base64 strings for HTML, CSS, or JSON embedding. Supports PNG, JPG, SVG, WebP. Instant encode/decode.
Base64ImageEmbed
🧪
HTTP Method Tester
Test GET, POST, HEAD, OPTIONS requests to any endpoint. View full response headers, status codes, and timing. No install needed.
HTTPAPIREST
📦
JavaScript Minifier
Minify JavaScript code to reduce file size and improve page load speed. Remove comments, whitespace, and shorten variable names.
JSMinifyPerformance

🎨 Design & Creative

5 tools

🖧 Server & Config

5 tools

🔗 Link Tools

4 tools
🔍
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Why Use XDROPEDIA SEO Tools?

🆓
100% Free, Forever
All 120 tools are completely free with no signup, no credit card, and no usage limits. No freemium tricks — everything unlocked.
Instant Results
No queues, no delays. Results in seconds directly in your browser. Server-side lookups return live data — not cached outdated info.
🔒
No Account Required
Start using any tool immediately. Zero friction, zero data collection. We don't track your searches or store query results.
🎯
Domain Investor Focus
Every tool is designed with domain investors and SEO specialists in mind. Audit expired domains, verify authority, and find acquisition opportunities.
🛠️
120 Tools in One Place
From WHOIS and DNS to Core Web Vitals, schema validation, email deliverability, and developer utilities — a complete SEO toolkit with no tab-switching.
📱
Works on Any Device
Fully responsive across desktop, tablet, and mobile. Run audits on the go, check domain drops from your phone, and share results via URL.
🔄
Always Up to Date
Tools pull live data directly from DNS servers, WHOIS/RDAP, Google PageSpeed API, and Wayback Machine. No stale snapshots, no cached guesses.
🧩
Built for Workflows
Each tool is designed to chain into the next. WHOIS → DNS → SSL → PageSpeed → Schema → Backlinks. Run a full audit in under 5 minutes.

Who Uses These Tools?

🏗️
Domain Investors
Research expired domains before bidding. Check age, WHOIS history, blacklist status, backlink quality, and drop dates in one workflow.
📈
SEO Specialists
Technical audits, redirect chain analysis, Core Web Vitals testing, schema validation, and on-page optimization — without expensive subscriptions.
👨‍💻
Developers
JWT decoder, regex tester, JSON formatter, CSS/JS minifiers, Base64 encoder, CORS checker, and HTTP method tester — all in one bookmark.
📣
Digital Marketers
UTM builder, social media preview, SERP snippet generator, hashtag generator, and OG debugger for campaign launches and content publishing.

Common Workflows

🏆 Expired Domain Due Diligence
WHOIS History → Blacklist Check → SSL Check → Wayback Machine → Domain Valuation → Drop Date Estimator
⚡ Technical SEO Audit
PageSpeed → Core Web Vitals → Security Headers → Redirect Chain → Canonical Checker → Schema Validator
📧 Email Deliverability Audit
MX Checker → SPF & DMARC → DKIM Checker → BIMI Checker → Blacklist → Email Deliverability Score
🔐 Security Audit
SSL/TLS Scanner → Security Headers → CORS Checker → CSP Generator → HTTP Headers → Port Checker

Every SEO audit starts with data. Whether you're diagnosing a technical issue, evaluating an expired domain's backlink history, checking a competitor's tech stack, building campaign tracking links, or validating email infrastructure — these 120 tools cover the most common workflows without subscription fees or paywalls.

Unlike generic SEO tool suites, XDROPEDIA is purpose-built for domain investors and technical SEO specialists. The toolset bridges the gap between domain research and full site auditing — so you can assess any domain from registration date and WHOIS history all the way through to Core Web Vitals, structured data, and security headers before you commit to an acquisition.

Built alongside XDROPEDIA's expired domain finder — use the tools to audit domains before you acquire them, or to optimize sites you've already built on expired domain authority.