The Problem
Every time you share a link on social media, the platform reads your meta tags to generate the preview card. Bad meta tags = ugly previews = fewer clicks.
Most meta tag checkers are either paywalled, slow, or show you raw HTML without context.
The Solution
I built Meta Tag Checker — a free tool that:
- Fetches any URL and extracts all meta tags
- Shows social previews — see exactly how your link will appear on Google, Twitter/X, and Facebook/LinkedIn
- Scores your SEO out of 100 with specific issues to fix
- Lists all meta tags in a clean table
What It Checks
- Page title (length validation)
- Meta description (length validation)
- Open Graph tags (og:title, og:description, og:image, og:url)
- Twitter Card tags (twitter:card, twitter:title, twitter:image)
- Canonical URL
- Language attribute
- H1 headings
- Word count
- Response time
Try It
Paste any URL and see your SEO score instantly. No signup, no limits, completely free.
Tech Stack
- Next.js 15 (App Router)
- TypeScript
- Tailwind CSS
- Server-side fetching (handles CORS)
- Deployed on Vercel
The server-side fetch is key — browser-based tools can't check most sites due to CORS restrictions. This tool fetches from the server, so it works with any public URL.
Why I Built This
I got tired of sharing blog posts on Twitter only to see broken preview cards. Now I check every URL before sharing.
If you find it useful, drop a comment with your site's score!
Top comments (3)
Ran my own site through it - the social preview rendering is genuinely useful. Most small business owners I work with have never seen what their link actually looks like when shared on LinkedIn or Facebook. They just paste the URL and hope for the best.
One feature suggestion: it would be interesting to flag when a site has meta tags set up for social platforms but is missing structured data (schema markup) entirely. That's the pattern I see most often - someone spent time on OG tags but skipped the JSON-LD that actually helps search engines and AI tools understand what the page is about. The social preview looks great, but the site is invisible to ChatGPT and Perplexity because there's no machine-readable context.
Does it do the same as this site?
metatags.io/
Hey @manja316. Do you have public repository for this project ? can you share if you have