All-In-One SEO & Social Preview Studio
Preview a title, description and image as a Google result and as Facebook, X and LinkedIn...
Tools for Developers, SEO & the Web
Free tools for everyday web tasks: format code, convert and compress images, work with PDFs, check DNS and HTTP headers, and generate SEO markup. They do real work on real files, and you do not need an account.
84 Tools
7 Categories
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Quick Access
Jump to a category and find the right tool quickly.
SEO Tools
Checks and generators for technical SEO: meta tags, canonical URLs, Open Graph, sitemaps and robots.txt, plus previews of how a page may look in search and social. They check what is on the page. They do not predict rankings.
15 tools
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Canonical URL Checker & Validator
Check a page's canonical tag: missing, self-referencing, pointing to another domain, duplicated, or set in an...
FAQ Schema Generator (JSON-LD)
Add questions and answers and get FAQPage JSON-LD markup to paste into your page. Note that...
Google Index & Crawlability Checker
Check a URL for common indexing blockers: status code, noindex, canonical and robots.txt. A diagnostic, not...
Google SERP Snippet Preview Tool
Type a title, URL and description to see a mock Google result on desktop and mobile,...
Keyword Density & Frequency Analyzer
Paste text to count words, count how often a keyword appears, and see its density and...
Moz Domain & Page Authority Checker
Look up Moz's Domain Authority, Page Authority and Spam Score for a URL through the Moz...
On-Page Broken Link Checker
Check the first 12 links on a single page for 404s and errors using HEAD requests....
On-Page Meta Tag Analyzer
Fetch a URL and check its title and description length, robots and canonical tags, viewport and...
Open Graph & Social Card Checker
Fetch a page and read its Open Graph and Twitter Card tags, with mock previews for...
Open Graph & Social Meta Generator
Write Open Graph and Twitter Card meta tags for a page: title, description, URL, image, type...
Robots.txt Checker & Syntax Validator
Fetch a site's robots.txt, list its rules and sitemap lines, and flag lines with no colon...
Robots.txt Generator
Create a robots.txt file with allow and disallow rules, a sitemap line and a rule for...
Webpage Size & Compression Checker
Measure a page's HTML size, check Gzip or Brotli compression and see the server response time....
XML Sitemap Checker & Validator
Fetch an XML sitemap or sitemap index and check that it parses, count its URLs, see...
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