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Nometria’s SEO tools help you ensure your vibe-coded app is findable and shareable. All tools are free at nometria.com/tools.

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Full SEO Audit

The comprehensive audit runs all checks at once and returns a prioritized list of issues. What it checks:
  • Title tag (length, uniqueness, keyword presence)
  • Meta description (length, call-to-action, truncation)
  • Open Graph tags (og:title, og:description, og:image, og:url)
  • Twitter Card tags
  • Heading hierarchy (H1 required, no skipped levels)
  • Canonical tag (present, correct, not self-referencing with params)
  • Structured data (JSON-LD presence and validity)
  • Robots.txt (accessible, not blocking crawlers)
  • Sitemap (linked in robots.txt, accessible, valid XML)
  • Page speed (Largest Contentful Paint, Cumulative Layout Shift)
How to use: Enter your URL → audit runs → download report as PDF or JSON.

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Meta Tag Analyzer

Paste a URL or raw HTML to inspect all meta tags in detail. Returns:
  • Parsed title, description, all og:* and twitter:* tags
  • Character counts with good/warning/bad thresholds
  • Missing recommended tags
  • Duplicate tag detection

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OG Preview

Preview how your page looks when shared on:
  • Twitter/X — summary card and large image card
  • LinkedIn — article format
  • Slack — link unfurl
  • WhatsApp — link preview
  • Facebook — feed post format
Requires og:title, og:description, and og:image to be set. Returns a visual mockup for each platform. Common issues for vibe-coded apps:
  • og:image pointing to a relative path (must be absolute)
  • Missing og:image:width and og:image:height (causes cropping on some platforms)
  • og:image served over HTTP (must be HTTPS)

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JSON-LD Generator

Generate application/ld+json structured data markup for:
  • WebSite — with SearchAction sitelinks
  • WebPage / Article — for blog posts
  • Product — with price, rating, availability
  • Organization — with logo, social profiles
  • BreadcrumbList — for multi-level navigation
  • FAQPage — for FAQ sections
Output is copy-paste ready. Paste it into your <head> or into Mintlify’s <Head> component.

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Sitemap Generator

Crawls your site and generates a valid sitemap.xml. Options:
  • Max depth (default: 3 levels)
  • Exclude patterns (e.g. /admin/**, /api/**)
  • Include lastmod dates
  • Include changefreq and priority hints
Download the generated XML and place it at /public/sitemap.xml, then reference it in /public/robots.txt: 
User-agent: *
Allow: /

Sitemap: https://yourapp.com/sitemap.xml

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Robots.txt Checker

Validates your robots.txt file:
  • Accessible at yourdomain.com/robots.txt
  • Valid syntax (no malformed directives)
  • Not accidentally blocking crawlers (common with vibe-coded apps that generate Disallow: /)
  • Sitemap URL is present and accessible
Crawls your site and returns a list of:
  • Internal 404s (pages that don’t exist)
  • Broken external links
  • Redirect chains longer than 2 hops
  • Anchors pointing to non-existent headings

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Redirect Checker

Trace the full redirect chain for any URL: 
https://yourapp.com/old-page
  → 301 → https://yourapp.com/new-page    ✓

https://www.yourapp.com
  → 301 → https://yourapp.com             ✓
  → 301 → https://yourapp.com/home        ← Extra hop (fix this)
Identifies redirect loops and unnecessary chains that slow down crawlers and real users.