What is MetaScan and how does it work as a meta tag checker?

MetaScan is a free URL inspector and comprehensive meta tag checker tool that analyzes website metadata, including meta descriptions, meta titles, OpenGraph tags, Twitter Cards, JSON-LD structured data, and security headers. Simply enter any URL and get instant insights about your website's SEO configuration and semantic HTML structure.

What's the difference between a meta description checker and meta title checker?

A meta description checker analyzes the meta description tag that appears in search results below your title, typically 150-160 characters. A meta title checker examines the tag that appears as the clickable headline in search results, ideally 50-60 characters. MetaScan checks both simultaneously along with character counts and best practice recommendations.

How does the HTML to Markdown converter work in MetaScan?

MetaScan's HTML to Markdown converter extracts your webpage's semantic HTML content and converts it into clean, readable Markdown format. This is perfect for content migration, AI training data preparation, or analyzing your website's actual content structure separate from its styling.

What is a URL inspector and why do I need URL audit tools?

A URL inspector (or URL audit tool) comprehensively analyzes a webpage's technical SEO elements. MetaScan inspects meta tags, security headers (CSP, HSTS, X-Frame-Options), JSON-LD structured data, heading hierarchy, and semantic HTML elements. Regular URL audits help identify SEO issues before they impact your search rankings.

What semantic HTML elements does MetaScan analyze?

MetaScan analyzes all semantic HTML5 elements including , , , , , , , and their proper usage. It checks for semantic correctness, accessibility compliance (ARIA attributes), and whether your HTML structure follows best practices for both search engines and AI crawlers.

How does AI assist in MetaScan's URL auditing process?

MetaScan uses AI-assisted analysis to evaluate your metadata quality, detect missing or duplicate tags, suggest improvements based on current SEO best practices, and identify semantic HTML issues. The AI assist feature provides actionable recommendations for improving your meta descriptions, titles, and overall technical SEO.

Can MetaScan check meta tags on any website?

Yes! MetaScan works as a universal meta tag checker for any publicly accessible website. You can analyze competitor sites, audit client projects, or check your own pages. It extracts all meta tags including description, keywords, robots, viewport, OpenGraph, Twitter Cards, and custom meta properties.

Is MetaScan really free? Are there any usage limits?

MetaScan is completely free for basic URL inspection and meta tag checking. Rate limits apply to prevent abuse, but they're generous enough for regular SEO auditing needs.

How do I check security headers on a website?

MetaScan lets you check security headers for any URL instantly. Enter a URL and navigate to the Security tab to see a full analysis of HTTP security headers including Content-Security-Policy (CSP), Strict-Transport-Security (HSTS), X-Frame-Options, X-Content-Type-Options, and more. Each header is graded with a severity level and actionable recommendations for fixing issues.

How does MetaScan work as an OG tag checker and OpenGraph validator?

MetaScan validates all OpenGraph (OG) tags on your page, including og:title, og:description, og:image, og:url, og:type, and og:site_name. The Overview tab shows a live preview of how your page will appear when shared on social media platforms like Facebook and LinkedIn. Missing or malformed OG tags are flagged with specific recommendations.

Can MetaScan validate JSON-LD structured data and schema markup?

Yes. MetaScan extracts and displays all JSON-LD structured data embedded in a page. The JSON-LD tab shows each schema block with syntax highlighting and a copy button. This makes MetaScan an effective structured data testing tool and schema markup validator for verifying that your Product, Article, FAQPage, Organization, or other schema types are correctly implemented.

What makes MetaScan different from other website SEO checker tools?

MetaScan combines eight analysis categories in a single free tool: meta tag checking, link tag inspection, heading structure analysis, JSON-LD extraction, security header auditing, semantic HTML validation, and HTML-to-Markdown conversion. Most free tools only cover one or two of these areas. MetaScan also provides a Google SERP preview and Twitter Card preview so you can see exactly how your page appears across platforms.

Free Meta Tag Checker & URL Inspector

Comprehensive meta description checker, meta title checker, and URL audit tool. Check meta tags, OpenGraph, twitter card validator, JSON-LD structured data testing tool, security headers, and semantic HTML — instantly .

Free website SEO checker · No signup required

How to Check Meta Tags in 3 Steps

Enter your URL

Paste any publicly accessible HTTP or HTTPS website URL into the input field above.

Get instant analysis

MetaScan fetches the page and extracts all meta tags, links, JSON-LD, security headers, and semantic HTML.

Review actionable insights

Browse 8 analysis categories with clear results, warnings, and improvement recommendations.

What Your MetaScan Report Includes

Eight analysis categories covering everything from SEO metadata to security headers — all from a single URL scan.

📊

Overview & SERP Preview

Quick stats, Google search preview, and Twitter Card preview showing exactly how your page appears across platforms.

🏷️

Meta Tag Checker

Full meta description checker and meta title checker with character counts, OG tag validation, and Twitter Card analysis.

🔗

Link Tags

Inspect canonical URLs, alternate links, preload/prefetch hints, stylesheets, favicons, and hreflang declarations.

📝

Heading Structure

Heading hierarchy analysis (H1–H6) and paragraph extraction to verify content structure for SEO and accessibility.

⚙️

JSON-LD Extractor

Structured data testing tool that extracts and displays all JSON-LD schemas — Product, Article, FAQPage, Organization, and more.

🔒

Security Headers

Check security headers including CSP, HSTS, X-Frame-Options, X-Content-Type-Options with severity grading and fix recommendations.

🧩

Semantic HTML Analyzer

Validates semantic HTML5 elements — <header>, <nav>, <main>, <article>, <section>, <aside>, <footer> — with a quality score.

📄

HTML to Markdown

Converts page content to clean Markdown — ideal for content migration, documentation, or AI training data preparation.

Powerful Free SEO Analysis Features

Everything you need to audit, analyze, and optimize your website's metadata and semantic HTML structure.

Meta Description Checker

Analyze meta descriptions with character count validation, preview how they appear in Google search results, and get recommendations for optimal length.

Meta Title Checker

Validate page titles with length analysis, preview SERP appearance, check for truncation, and ensure titles are optimized for click-through rates.

OG Tag Checker & OpenGraph Validator

Validate og:title, og:description, og:image, og:url, and og:type tags. Preview how your page appears when shared on Facebook, LinkedIn, and other platforms.

Comprehensive URL Inspector

Full URL audit including all meta tags, OpenGraph properties, Twitter Cards, canonical URLs, alternate links, and social media metadata validation.

Schema Markup Validator

Extract and validate JSON-LD structured data. Works as a structured data testing tool for Product, Article, FAQPage, Organization, and other schema types.

Security Headers Checker

Check security headers including Content-Security-Policy, HSTS, X-Frame-Options, and X-Content-Type-Options with severity grading and actionable fixes.

Built For

🔍

SEO Professionals

Audit client sites, check meta tags, and validate structured data quickly.

💻

Web Developers

Verify meta tags, security headers, and semantic HTML during development.

✍️

Content Creators

Check how content appears in search and social media before publishing.

🤖

AI Engineers

Extract clean Markdown from any URL for LLM training data and RAG pipelines.

Why MetaScan?

MetaScan is a free website SEO checker that combines eight analysis categories in a single tool. Most free tools only cover meta tags or structured data — MetaScan covers both, plus security headers, semantic HTML, heading structure, and HTML-to-Markdown conversion.

✓ 100% free — no signup, no credit card

✓ 8 analysis categories in one scan

✓ Google SERP & Twitter Card previews

✓ Security header grading with fix guidance

✓ JSON-LD structured data extraction

✓ HTML to Markdown for AI & content workflows

Hey, I’m NoRealByte 👋

Solo Founder building in the open

I started this project because I was tired of traditional SEO tools giving me a generic "green checkmark" without showing me the actual metadata or semantic hierarchy behind it. While most platforms are still optimizing for the search engines of the past, I’m focused on the future of machine-readable content.

I built these tools to expose the raw data and content gaps that actually determine how an LLM perceives your site. I'm sharing my personal discovery's here, no accounts, no bloat just the utility's to help with SEO. I’m always looking to learn from other builders, so if you have a feature idea or just want to talk shop about LLM optimization, let’s connect on X.

Frequently Asked Questions

Everything you need to know about meta tag checking, URL auditing, and website SEO analysis.

Have more questions? Contact support.

What is MetaScan and how does it work as a meta tag checker?: MetaScan is a free URL inspector and comprehensive meta tag checker tool that analyzes website metadata, including meta descriptions, meta titles, OpenGraph tags, Twitter Cards, JSON-LD structured data, and security headers. Simply enter any URL and get instant insights about your website's SEO configuration and semantic HTML structure.
What's the difference between a meta description checker and meta title checker?: A meta description checker analyzes the meta description tag that appears in search results below your title, typically 150-160 characters. A meta title checker examines the <title> tag that appears as the clickable headline in search results, ideally 50-60 characters. MetaScan checks both simultaneously along with character counts and best practice recommendations.
How does the HTML to Markdown converter work in MetaScan?: MetaScan's HTML to Markdown converter extracts your webpage's semantic HTML content and converts it into clean, readable Markdown format. This is perfect for content migration, AI training data preparation, or analyzing your website's actual content structure separate from its styling.
What is a URL inspector and why do I need URL audit tools?: A URL inspector (or URL audit tool) comprehensively analyzes a webpage's technical SEO elements. MetaScan inspects meta tags, security headers (CSP, HSTS, X-Frame-Options), JSON-LD structured data, heading hierarchy, and semantic HTML elements. Regular URL audits help identify SEO issues before they impact your search rankings.
What semantic HTML elements does MetaScan analyze?: MetaScan analyzes all semantic HTML5 elements including <header>, <nav>, <main>, <article>, <section>, <aside>, <footer>, and their proper usage. It checks for semantic correctness, accessibility compliance (ARIA attributes), and whether your HTML structure follows best practices for both search engines and AI crawlers.
How does AI assist in MetaScan's URL auditing process?: MetaScan uses AI-assisted analysis to evaluate your metadata quality, detect missing or duplicate tags, suggest improvements based on current SEO best practices, and identify semantic HTML issues. The AI assist feature provides actionable recommendations for improving your meta descriptions, titles, and overall technical SEO.
Can MetaScan check meta tags on any website?: Yes! MetaScan works as a universal meta tag checker for any publicly accessible website. You can analyze competitor sites, audit client projects, or check your own pages. It extracts all meta tags including description, keywords, robots, viewport, OpenGraph, Twitter Cards, and custom meta properties.
Is MetaScan really free? Are there any usage limits?: MetaScan is completely free for basic URL inspection and meta tag checking. Rate limits apply to prevent abuse, but they're generous enough for regular SEO auditing needs.
How do I check security headers on a website?: MetaScan lets you check security headers for any URL instantly. Enter a URL and navigate to the Security tab to see a full analysis of HTTP security headers including Content-Security-Policy (CSP), Strict-Transport-Security (HSTS), X-Frame-Options, X-Content-Type-Options, and more. Each header is graded with a severity level and actionable recommendations for fixing issues.
How does MetaScan work as an OG tag checker and OpenGraph validator?: MetaScan validates all OpenGraph (OG) tags on your page, including og:title, og:description, og:image, og:url, og:type, and og:site_name. The Overview tab shows a live preview of how your page will appear when shared on social media platforms like Facebook and LinkedIn. Missing or malformed OG tags are flagged with specific recommendations.
Can MetaScan validate JSON-LD structured data and schema markup?: Yes. MetaScan extracts and displays all JSON-LD structured data embedded in a page. The JSON-LD tab shows each schema block with syntax highlighting and a copy button. This makes MetaScan an effective structured data testing tool and schema markup validator for verifying that your Product, Article, FAQPage, Organization, or other schema types are correctly implemented.
What makes MetaScan different from other website SEO checker tools?: MetaScan combines eight analysis categories in a single free tool: meta tag checking, link tag inspection, heading structure analysis, JSON-LD extraction, security header auditing, semantic HTML validation, and HTML-to-Markdown conversion. Most free tools only cover one or two of these areas. MetaScan also provides a Google SERP preview and Twitter Card preview so you can see exactly how your page appears across platforms.

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