Free SEO & Webmaster Tools

Redirect Checker Trace every hop: 301, 302, meta refresh and JavaScript redirects — with timing, HTTPS and loop detection. Backlink Verifier Monitor backlinks you already know: is each one still live, still dofollow, still pointing at you? Paste the linking URLs. Broken Link Checker Scan a page and test its links in parallel — find 404s, timeouts and dead outbound references. Meta Tag Analyzer Audit title, description, canonical, robots, Open Graph and Twitter cards — with Google SERP preview. Canonical Checker Audit rel=canonical from HTML and HTTP headers — self-reference, duplicates, chains and noindex conflicts. Indexability Checker Every technical reason Google can or cannot index a URL: status, robots.txt, meta robots, X-Robots-Tag, canonical. Page Indexer Push new or updated URLs to Bing, Yandex, Seznam, Naver & Yep in seconds via IndexNow — key generator and key-file check included. URL Pinger Ping multiple URLs to every blog & update service that still answers in 2026 — Ping-O-Matic, Twingly, Blo.gs, FC2 & Bloggerei.de — with each service's real response. Social Media Preview See exactly how a link renders on Facebook and X — live card previews with og:image size verification. Keyword Density Checker Analyze 1–3 word phrase frequency of any URL or text, with English and German stopword filtering. Link Extractor Pull every link from a page, classified internal / external / nofollow, with anchor texts. Robots.txt Tester Fetch, parse and test any URL path against a site's robots.txt rules — per user-agent, wildcard aware. Sitemap Checker Locate and validate XML sitemaps, count URLs, follow sitemap indexes and inspect lastmod data. Hreflang Checker Validate hreflang annotations: language codes, x-default, self-reference and duplicates. WordPress Theme Detector Identify the active WordPress theme (name, version, author) and every plugin visible on a page. UTM Campaign Builder Build clean, tracked campaign URLs with presets for Google Ads, newsletters and social. Meta Tag Generator Generate complete meta tags — title, description, Open Graph and Twitter Cards in one block. Robots.txt Generator Generate a robots.txt — allow/disallow paths, block AI crawlers, add your sitemap. Schema Markup Generator Generate JSON-LD structured data — FAQ, Article, Product, Breadcrumb and LocalBusiness. XML Sitemap Generator Generate a sitemap.xml from a list of URLs — with lastmod, changefreq and priority options. Hashtag Generator Generate hashtags from any text or title — keywords extracted, CamelCase, copy-ready.

HTTP Header Checker Inspect full response headers and grade security headers like CSP, HSTS and X-Frame-Options. SSL Certificate Checker Issuer, validity window, days remaining, SAN list, protocol and full certificate chain. DNS Lookup A, AAAA, MX, NS, TXT, CNAME, SOA and CAA records with TTLs — all record types in one view. DNS Propagation Checker Compare a record across Google, Cloudflare and local resolvers — see if your DNS change is live. MX Record Lookup Mail exchanger records with priorities — see which servers receive a domain's email. NS Record Lookup Authoritative name servers of any domain — the servers that answer for its DNS zone. TXT Record Lookup All TXT records of a domain — SPF, verification tokens, DKIM selectors and more. SPF Record Checker Find and parse the SPF record — mechanisms, includes and the all-qualifier explained. DMARC Checker Fetch and decode the _dmarc policy — p=, rua reporting and alignment settings. Whois Lookup Registrar, registration and expiry dates, status codes and name servers for any domain. Domain Age Checker How old is a domain? Creation date from whois plus exact age in years and days. Server Response Time Test How fast your server answers: DNS, connect, TLS and TTFB as a waterfall, plus compression and page weight. No render, no Core Web Vitals. HTTP Status Checker Bulk-check up to 20 URLs in parallel: final status code, redirect count and response time. IP & Reverse DNS Your public IP, PTR records, and hostname-to-IP resolution for any host or address. VPN Leak Test Is your VPN actually on — and leak-free? ASN proxy & hosting flags, reverse-DNS fingerprints and a real WebRTC exposure test. Favicon Checker Detect all favicon and touch-icon declarations of a site and verify they actually load. Email Validator Validate email addresses live: syntax check plus MX lookup — can the domain receive mail?

Word Counter Words, characters, sentences, paragraphs, reading time and top keywords — live while you type. Case Converter Convert text between 12 cases: UPPERCASE, lowercase, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case and more. Reverse Text Reverse any text character by character — mirror your string instantly in the browser. Reverse Words Reverse the order of words in a sentence — "one two three" becomes "three two one". Text Repeater Repeat any text or word N times with optional separator — new line, space or custom. Remove Line Breaks Strip all line breaks from text — merge everything into one line or keep paragraphs. Remove Extra Spaces Clean up text: collapse double spaces, trim lines and remove tabs in one click. Remove Duplicate Lines Delete duplicate lines from any list — keep the first occurrence, optionally case-insensitive. Sort Lines Alphabetically Sort text lines A–Z, Z–A, by length or randomly shuffle — free online line sorter. Add Line Numbers Prefix every line of text with a line number — choose separator and starting number. Find and Replace Find and replace text online — plain or regex mode, case-sensitive toggle, live match count. Character Counter Count characters with and without spaces live — with limits for tweets, meta tags and SMS. Upside Down Text Flip your text upside down (ʇxǝʇ uʍop ǝpᴉsdn) — copy-paste ready for social media. Small Text Generator Convert text to ˢᵐᵃˡˡ superscript or ₛᵤᵦₛcᵣᵢₚₜ Unicode letters — copy-paste anywhere. Bold Text Generator Make 𝐛𝐨𝐥𝐝, 𝘪𝘵𝘢𝘭𝘪𝘤 and 𝙗𝙤𝙡𝙙-𝙞𝙩𝙖𝙡𝙞𝙘 Unicode text for Instagram, X and WhatsApp bios. Italic Text Generator Convert text to 𝘪𝘵𝘢𝘭𝘪𝘤 and 𝓈𝒸𝓇𝒾𝓅𝓉 Unicode styles — paste into any social bio or post. Strikethrough Text Generator Create s̶t̶r̶i̶k̶e̶t̶h̶r̶o̶u̶g̶h̶ and u̲n̲d̲e̲r̲l̲i̲n̲e̲d̲ text with Unicode combining characters. Bubble Text Generator Turn text into ⓑⓤⓑⓑⓛⓔ letters or 🅑🅛🅐🅒🅚 bubbles — fun Unicode style for social posts. Slug Generator Convert titles into clean URL slugs — lowercase, hyphenated, umlauts transliterated. Email Extractor Extract all email addresses from any text or HTML — deduplicated, one per line. URL Extractor Extract all links and URLs from text or HTML source — deduplicated, one per line. Number Extractor Pull all numbers out of any text — integers and decimals, one per line, with sum and average. Remove Punctuation Strip all punctuation marks from text, keeping letters, numbers and spaces. Comma Separator Convert lists between line-separated and comma-separated — with optional quotes for SQL/CSV. Lorem Ipsum Generator Generate lorem ipsum placeholder text — paragraphs, sentences or words, with optional classic opening and HTML output. Random Word Generator Generate random English words — for brainstorming, games, passphrases and creative prompts. Username Generator Generate unique username ideas from adjective + noun + number combos — availability-friendly. Palindrome Checker Check whether a word or sentence is a palindrome — ignoring spaces, case and punctuation. Morse Code Translator Translate text to Morse code and back — letters, numbers and common punctuation. Binary Translator Convert text to binary (01000001…) and binary back to text — UTF-8 aware. Hex Converter Convert text to hexadecimal and hex back to text — UTF-8, with or without spaces/0x. ASCII Converter Convert text to ASCII/Unicode code points and decimal codes back to text. ROT13 Encoder Encode and decode ROT13 text — the classic letter-shift cipher (self-inverse). Caesar Cipher Encrypt and decrypt with the Caesar cipher — any shift value 1–25, plus brute-force decode. Text to HTML Converter Convert plain text to HTML — paragraphs, line breaks and entities escaped safely. HTML to Text Converter Strip all HTML tags from source code and get clean plain text — entities decoded. Text to Speech Read any text aloud in your browser — choose voice, speed and pitch. No upload, no signup. Emoji Remover Strip all emoji from text — including skin tones, flags and ZWJ combinations, in one click. Online Notepad A distraction-free notepad in your browser — auto-saved on your device, with word count and .txt download.

Encoder / Decoder URL, Base64 and HTML entity encoding and decoding — UTF-8 safe, instant, in your browser. Source Code Viewer View the raw HTML source of any page server-side — with status, size, redirects and one-click copy. Hash Generator MD5, SHA-1, SHA-256, SHA-512 and CRC32 checksums of any text in one pass. Password Generator Cryptographically secure passwords with charset control and a real entropy rating. .htaccess Redirect Generator Correct Apache rules for 301/302 redirects, domain moves, HTTPS and www canonicalization. QR Code Generator Design QR codes with custom colors, dot styles, rounded eyes and a center logo — export SVG or PNG, no expiry. JSON Formatter Format and pretty-print JSON with 2 or 4 space indentation — validates while formatting. JSON Minifier Minify JSON to a single compact line — removes all whitespace, shows size savings. JSON Validator Validate JSON syntax online — precise engine error messages for the first problem found. CSV to JSON Converter Convert CSV data to a JSON array of objects — auto-detects comma, semicolon or tab delimiter. JSON to CSV Converter Convert a JSON array of objects into CSV — union of all keys becomes the header row. XML Formatter Pretty-print and validate XML with proper indentation — sitemaps, feeds, configs. HTML Minifier Minify HTML — remove comments and collapse whitespace between tags, with size savings shown. CSS Minifier Minify CSS online — strip comments, whitespace and last semicolons; shows size savings. CSS Beautifier Format minified CSS back into readable form — one declaration per line, indented. JavaScript Minifier Basic JS minification — strip comments and collapse whitespace safely (no renaming). SQL Formatter Format SQL queries — uppercase keywords and clause-per-line layout for readability. Markdown to HTML Convert Markdown to HTML — headings, bold, italic, links, lists, code and blockquotes. Regex Tester Test regular expressions live against sample text — match count, groups and positions. Diff Checker Compare two texts line by line — additions, deletions and changes clearly marked. UUID Generator Generate UUID v4 (random) or v7 (time-ordered) identifiers — bulk up to 100, with format options. Timestamp Converter Convert Unix timestamps to human dates and back — seconds or milliseconds, UTC and local. URL Parser Break any URL into its parts — protocol, host, path, query parameters and fragment. JWT Decoder Decode JSON Web Tokens — header and payload as formatted JSON, expiry shown in plain dates. Color Converter Convert colors between HEX, RGB and HSL — with live preview swatch and color picker. CSS Gradient Generator Build linear and radial CSS gradients visually — two colors, angle slider, copy-ready code. Box Shadow Generator Design CSS box-shadows visually — offset, blur, spread, color and opacity sliders. Border Radius Generator Create CSS border-radius values visually — all four corners individually, live preview. Base64 Image Encoder Convert images to Base64 data URIs for inline embedding — and preview Base64 back as image. Image Compressor Compress JPG, PNG and WebP images in your browser — quality slider, instant download, no upload. Image Resizer Resize images to exact pixel dimensions in your browser — aspect ratio lock, no upload. Image Converter Convert images between PNG, JPG and WebP formats — locally in your browser, no upload. Favicon Generator Generate favicons from any image — 16, 32, 48, 180 (Apple) and 512px PNGs in one click. User Agent Parser Parse any user-agent string — browser, version, OS and device type, plus your own UA. Screen Resolution Checker What is my screen resolution? Live viewport size, screen size, pixel ratio and color depth. Credit Card Validator Validate credit card numbers with the Luhn algorithm — detects Visa, Mastercard, Amex type. IBAN Validator Validate IBAN bank account numbers — MOD-97 checksum and country length rules. Random Number Generator Generate cryptographically random numbers in any range — unique or repeating, sortable, custom separator. Password Strength Checker Check password strength — entropy bits, crack-time estimate and common-pattern warnings. Number Base Converter Convert numbers between binary, octal, decimal and hexadecimal — big-integer safe. Email Syntax Checker Bulk-check email address syntax — flags invalid formats, typos in common domains, duplicates. Htpasswd Generator Generate .htpasswd entries with bcrypt — password-protect folders via Apache Basic Auth. URL List Cleaner Clean URL lists — strip parameters, normalize protocol/www, dedupe and sort in one pass. JSON to XML Converter Convert JSON into well-formed XML — arrays become repeated elements, attributes stay readable. XML to JSON Converter Convert XML into clean JSON — attributes as @keys, repeated elements become arrays. HTML Table Generator Generate HTML table markup — rows, columns, header row and styling options, copy-ready.

Percentage Calculator Calculate percentages three ways: X% of Y, X is what % of Y, and percentage change. Average Calculator Calculate mean, median, mode, min, max and sum of any list of numbers. Age Calculator Calculate exact age from a birth date — years, months, days, plus total days lived. Date Difference Calculator Days between two dates — plus weeks, months, years and working days (Mon–Fri). BMI Calculator Calculate Body Mass Index from height and weight — with WHO category classification. VAT Calculator (MwSt) Add or remove VAT — German 19%/7% presets or any custom rate, net ↔ gross both ways. Sales Tax Calculator Add sales tax to a price or back it out of a total — any rate, instant both directions. Discount Calculator Calculate sale prices — percent off, amount saved, and stacked double discounts. Margin Calculator Calculate profit margin and markup from cost and price — and the difference between them. Tip Calculator Calculate tips and split the bill — tip presets, per-person amounts, rounding option. Loan Calculator Calculate monthly loan payments (annuity) — total interest and payoff summary. Compound Interest Calculator Compound growth with monthly contributions — final value, deposits and interest split. ROI Calculator Calculate return on investment — total ROI %, absolute gain and annualized return. Fuel Cost Calculator Calculate trip fuel cost from distance, consumption (l/100km) and fuel price. Salary Converter Convert between hourly wage and monthly/annual salary — based on your weekly hours. Length Converter Convert length units — mm, cm, m, km, inch, foot, yard and mile, instantly. Weight Converter Convert weight units — mg, g, kg, tons, ounces, pounds and stone, instantly. Temperature Converter Convert between Celsius, Fahrenheit and Kelvin — formulas shown with the result. Speed Converter Convert speed units — km/h, m/s, mph, knots and ft/s, instantly. Area Converter Convert area units — m², km², hectares, square feet, acres and square miles. Volume Converter Convert volume units — ml, liters, m³, US cups, pints, fluid ounces and gallons. Data Size Converter Convert data sizes — KB, MB, GB, TB (decimal) and KiB, MiB, GiB (binary) correctly. Time Unit Converter Convert time units — seconds, minutes, hours, days, weeks, months and years. Roman Numeral Converter Convert numbers to Roman numerals and back — 1 to 3999, subtractive notation. Number to Words Convert numbers to English words — up to trillions, for checks, contracts and invoices. PayPal Fee Calculator Calculate PayPal fees — what you receive, and what to charge to net an exact amount. Hours Calculator Calculate time between two clock times — minus breaks, with decimal hours for timesheets.