Paste your HTML source code below to instantly audit meta tags, Open Graph, Twitter Cards, structured data, and get an SEO score with actionable recommendations.
View your page source (Ctrl+U) and paste it here, or use curl https://example.com to fetch it.
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Paste HTML and click Analyze
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About This Tool
The Meta Tag Checker by WebEvra is a free, privacy-focused SEO auditing tool that analyzes your HTML source code entirely in the browser. It evaluates your page's title tag, meta description, Open Graph tags, Twitter Card markup, canonical URL, robots directives, structured data (JSON-LD), H1 headings, favicon, viewport, and character encoding. Every check produces an A-through-F grade with clear, actionable recommendations so you can improve your search engine visibility and social sharing appearance.
All processing happens client-side using the browser's built-in DOMParser API. No data is ever sent to a server, making it safe to use with staging pages, private projects, or any HTML source code you want to keep confidential.
Frequently Asked Questions
What are meta tags and why do they matter for SEO?
Meta tags are HTML elements in the <head> section that provide metadata about a page to search engines and social platforms. Key tags like the title tag, meta description, and robots tag influence how search engines crawl, index, and display your pages. Properly optimized meta tags can significantly improve click-through rates and search visibility.
What is the ideal length for a title tag?
The ideal title tag length is between 50 and 60 characters. Google typically displays the first 50-60 characters of a title in search results. Titles shorter than 50 characters may not fully use available SERP space, while titles longer than 60 characters may be truncated, which can reduce click-through rates.
What are Open Graph tags and how do they affect social sharing?
Open Graph (OG) tags control how your content appears when shared on social platforms like Facebook, LinkedIn, and others. Key OG tags include og:title, og:description, og:image, and og:url. Without OG tags, social platforms may display incorrect or missing information when your page is shared, leading to poor engagement and reduced sharing.
What is the difference between Open Graph tags and Twitter Card tags?
Open Graph tags were created by Facebook and are used by most social platforms including Facebook, LinkedIn, and Pinterest. Twitter Card tags are specific to Twitter (X) and control how content appears there. Twitter falls back to OG tags if Twitter Card tags are absent, but for optimal display on both platforms, it is best to include both sets of tags on your pages.
How does this meta tag checker tool work?
This tool parses HTML source code you paste into the textarea using the browser's built-in DOMParser API. It extracts all important meta tags including title, description, Open Graph, Twitter Cards, canonical URL, robots directives, structured data (JSON-LD), H1 headings, viewport, charset, and favicons. It then calculates an A-through-F score based on completeness and provides actionable recommendations. All processing happens client-side; no data is sent to any server.