Free tools for SEO and web work. No sign-up.

Check how pages look and behave for search engines: snippets, meta tags, structured data, redirects and robots.txt.

• SERP Snippet Preview→Preview how your title tag and meta description appear in Google results, with pixel-width truncation for desktop and mobile.
• Meta Tag Checker→Check any page's title, meta description, canonical, robots, headings, Open Graph and structured data in one scan.
• Schema Markup Generator→Generate valid JSON-LD structured data for Organization, Article, FAQ and Breadcrumb markup. Copy and paste into your page.
• Redirect Checker→Follow every redirect hop for a URL, see 301/302 status codes and response times, and catch chains and loops.
• Robots.txt Tester→Fetch or paste a robots.txt file and test whether Googlebot or any crawler can access a URL, using Google's matching rules.

Look up how a site is served: status, SSL, DNS, domain records and HTTP headers.

• Website Status Checker→Check if a website is up or down right now: HTTP status code, response time and redirects, tested live from our server.
• SSL Checker→Check a site's SSL/TLS certificate: issuer, expiry date and days left, covered names, chain problems, TLS version and HTTP/2.
• DNS Lookup→Look up every DNS record for a domain in one go, with plain-English notes on mail setup (SPF, DMARC), IPv6 and CAA.
• WHOIS Lookup→Find who a domain is registered with, when it was created and when it expires, its status codes and nameservers, live from the registry.
• IP Lookup→See your public IP address, or look up any IPv4 or IPv6 address: reverse DNS, network (ASN), and whether it's private or reserved.
• Reverse IP Lookup→Find the hostname behind an IP address from its PTR record, and check that it resolves back to the same IP.
• Domain to IP Lookup→Find the IPv4 and IPv6 addresses a domain points to, with CNAMEs, reverse DNS and the network that hosts each address.
• HTTP Headers Checker→See every HTTP response header a URL returns and get a security grade for HSTS, CSP, X-Frame-Options and more, with fixes.
• IDN Punycode Converter→Convert internationalized domain names between Unicode and Punycode (xn--), in bulk, and spot look-alike characters.
• Uptime Calculator→Turn an SLA percentage like 99.9% into allowed downtime per day, week, month and year, or work out uptime from downtime.

Everyday utilities for web work: format, minify, encode, convert and generate. They run entirely in your browser.

• JSON Formatter & Validator→Validate JSON with exact line and column errors, then pretty-print or minify it. Big numbers are kept exactly as written.
• JavaScript Minifier→Minify JavaScript with Terser: shorten names, drop dead code and comments, and see the size and gzip savings.
• CSS Minifier→Minify CSS with CSSO: strip whitespace and comments, shorten colors and values, and merge duplicate rules.
• HTML Minifier→Shrink HTML safely: remove comments and collapsible whitespace, and minify inline CSS, JavaScript and JSON-LD.
• Password Generator→Generate strong random passwords in your browser with the Web Crypto API, with entropy and time-to-crack estimates.
• QR Code Generator→Create QR codes for URLs, text and Wi-Fi networks. Pick size, colors and error correction, then download PNG or SVG.
• User-Agent Parser→Break a User-Agent string into browser, engine, OS and device, and spot Googlebot, Bingbot and AI crawlers.
• MD5 & SHA Hash Generator→Hash text or files with MD5, SHA-1, SHA-256, SHA-384 and SHA-512 in your browser, and compare against a checksum.
• Color Converter→Convert colors between HEX, RGB, HSL and OKLCH, and check WCAG contrast against white and black text.
• UTM Builder→Build campaign URLs with utm_source, utm_medium and utm_campaign, with presets for ads, social and email.
• URL Parser→Split any URL into protocol, host, port, path, fragment and a decoded table of query parameters.
• URL Encoder & Decoder→Percent-encode or decode URLs and query values, as a component, a full URL or form data, with UTF-8 support.
• UUID Generator→Generate up to 1,000 random v4 or time-ordered v7 UUIDs at once, and inspect any UUID's version and timestamp.
• Base64 Encoder & Decoder→Encode and decode Base64 for text and files, UTF-8 safe, with URL-safe and data URI options.
• Binary Converter→Convert text to binary, hex, octal or decimal bytes and back, plus a number base converter for any size integer.
• Unix Timestamp Converter→Convert Unix timestamps in seconds or milliseconds to dates in any time zone, and dates back to timestamps.
• Random Number Generator→Generate random whole numbers in any range, with or without repeats, using your browser's secure random source.
• Lorem Ipsum Generator→Generate lorem ipsum placeholder text by paragraphs, sentences or words, as plain text or HTML.

Count, clean up and transform copy before it goes live.

• Word Counter→Count words, characters with and without spaces, sentences and paragraphs, with reading and speaking time and a keyword preview.
• Keyword Density Checker→See which words and 2 or 3-word phrases your copy repeats most, with density percentages and English or Turkish stopword filtering.
• Case Converter→Convert text to UPPER, lower, Title Case, Sentence case, camelCase, snake_case or kebab-case, with correct Turkish İ and ı.
• Slug Generator→Turn titles into clean URL slugs. Transliterates Turkish, European, Cyrillic and Greek letters, with separator and length options.
• Text Cleaner→Strip HTML, extra spaces, line breaks, emoji and invisible characters, and straighten smart quotes, in one paste.
• Find and Replace→Find and replace text with whole-word, case-sensitive or regular expression matching, and see every replacement highlighted.
• Duplicate Line Remover→Remove repeated lines from lists of URLs, keywords or emails, ignoring case or spacing, then sort what's left.
• Reading Time Calculator→Estimate how long an article takes to read or say out loud, at the reading speed you choose, with time for images.
• Text Reverser→Reverse characters, word order, letters in each word or line order. Emoji, flags and accented letters stay intact.