Hado SEO

    Validate Your
    Meta Tags

    Instantly check all your SEO meta tags, Open Graph tags, and Twitter cards. See what's missing and what gets fixed with proper rendering.

    The Problem

    JavaScript apps often fail to render meta tags before search bots and social crawlers see them. Missing or incomplete meta tags hurt SEO rankings and social sharing.

    The Solution

    Hado SEO renders your JavaScript first, ensuring all meta tags are present and properly formatted when bots crawl your site. Better meta tags mean better rankings.

    Check Your Meta Tags

    What You'll Discover

    Comprehensive analysis of your meta tags across all categories

    Basic SEO Tags

    Check title tags, meta descriptions, canonical URLs, and robots directives that are critical for search engine rankings.

    Social Media Tags

    Validate Open Graph tags for Facebook and LinkedIn, plus Twitter Card tags to ensure perfect social sharing previews.

    Before vs After

    See exactly which tags are missing from raw HTML and how Hado SEO ensures they're all present when crawlers arrive.

    Frequently Asked Questions

    Why do meta tags need to be in the initial HTML?
    Social media crawlers (Facebook, Twitter, LinkedIn) and some search engines don't execute JavaScript. If your meta tags are added by JavaScript, these platforms won't see them, resulting in broken social previews and poor SEO.
    What meta tags should every page have?
    Every page should have a title tag (50-60 characters), meta description (150-160 characters), canonical URL, viewport meta tag, and Open Graph tags (og:title, og:description, og:image) for social sharing.
    How do I fix meta tags that only appear after JavaScript?
    You need server-side rendering or prerendering. With prerendering (like Hado SEO), your meta tags are rendered on the server and included in the initial HTML that crawlers and social platforms receive.
    Why are my social share previews broken?
    Most likely your Open Graph tags are being added by JavaScript after page load. Facebook, Twitter, and LinkedIn don't execute JavaScript, so they see empty meta tags. Use this tool to verify if that's the issue.

    Related Free Tools

    OG Preview Checker

    Preview your social media cards

    What Does Google See?

    Raw HTML vs rendered DOM comparison

    JavaScript Rendering Score

    Score your site's crawler-friendliness

    Stop losing traffic to invisible pages

    Make your app discoverable on Google, shareable everywhere, and ready for real traffic.

    Works with Lovable, Replit, and Bolt.new