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ToolsOnDuty - free online tools

Web & SEO

Build robots.txt, redirects, meta tags, UTM links and structured data.

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Meta Tag & Open Graph Generator

Generate SEO, Open Graph and Twitter meta tags with a live social preview.

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Website SEO Audit

Audit pasted page HTML for essential on-page SEO elements.

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Keyword Density Checker

Measure keyword matches and word density in pasted copy.

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Meta Title & Description Checker

Check title and description length against practical editorial ranges.

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Schema Markup Validator

Validate JSON-LD syntax and required core context and type fields.

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Canonical URL Checker

Extract, resolve and compare a canonical link with the page URL.

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Redirect Chain Analyzer

Analyze pasted URL, status and location rows for long or broken chains.

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Sitemap Generator

Convert a pasted URL list into a valid XML sitemap.

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Core Web Vitals Analyzer

Rate entered LCP, INP and CLS values and suggest the next focus.

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Web & SEO
Sitemap Validator

Parse pasted sitemap XML and check URL entries.

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Web & SEO
Broken Link Report Analyzer

Filter pasted crawler URL and status rows to failures.

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Web & SEO
Heading Structure Checker

Extract H1-H6 headings and flag skipped hierarchy levels.

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Web & SEO
Robots.txt Tester

Test a crawler and URL path against pasted Allow and Disallow rules.

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Web & SEO
Hreflang Generator

Generate alternate-language link tags from locale and URL pairs.

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Web & SEO
Hreflang Validator

Extract alternate tags and flag missing URLs or malformed language codes.

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Web & SEO
URL Slug Optimizer

Turn a title into a clean lowercase hyphen or underscore slug.

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Web & SEO
Manual SERP Rank Tracker

Record verified keyword positions and ranking URLs, then export CSV.

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Web & SEO
HTML SEO Extractor

Extract metadata, H1s, links and image attributes from pasted HTML.

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Web & SEO
HTML Metadata Extractor

Extract title, description, canonical, robots, Open Graph and Twitter metadata from pasted HTML.

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Web & SEO
Robots.txt Generator

Create a valid robots.txt file to control how search engines crawl your site.

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Web & SEO
Redirect Generator (.htaccess & Nginx)

Generate 301 and 302 redirect rules for Apache .htaccess or Nginx.

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Web & SEO
UTM Campaign URL Builder

Build trackable campaign URLs with UTM parameters for analytics.

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Web & SEO
JSON-LD Schema Generator

Generate JSON-LD structured data for rich results in search.

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Web & SEO
Google SERP Snippet Preview

Preview how your title and meta description appear in Google search results.

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About Web & SEO

Our web and SEO tools help you set up the technical details that search engines and social networks rely on, from robots.txt and redirects to Open Graph tags, UTM links and JSON-LD structured data.

They are built for site owners, marketers and developers: generate a clean robots.txt, create redirect rules for Apache or Nginx, preview how a page looks when shared, build trackable campaign links, and add schema markup that helps you earn rich results.

Every tool runs in your browser and gives you copy-ready output, so you can improve your site's SEO and sharing without guessing at the syntax.