Meta tags & social · 4 tools
Meta tags & social sharing tools
What social platforms and search engines actually see when they fetch your page. These 4 tools: analyze live meta tags from any URL, generate Open Graph markup (Facebook, LinkedIn), Twitter Card markup, and audit HTTP response headers (X-Robots-Tag, Cache-Control, HSTS, CSP).
About these tools
Meta tags & social questions
- What Open Graph tags are required?
- Four are required per OGP spec (ogp.me): og:title, og:type, og:image, og:url. Everything else (og:description, og:site_name, og:locale, article:author) is optional but recommended. Facebook, LinkedIn, WhatsApp, Slack all use OG; Twitter uses twitter:* but falls back to OG. If og:image is missing, social shares get a blank preview — the single biggest preventable CTR loss.
- What are the correct image dimensions for social sharing?
- Open Graph: 1200×630 (1.91:1 ratio, LinkedIn and Facebook default). Twitter Card summary_large_image: 1200×675 (16:9). Minimum sizes: OG 200×200 (falls back to thumbnail below this), Twitter 300×157. Max file: 5MB (Facebook), 5MB (Twitter). JPEG or PNG, not WebP (LinkedIn doesn't render WebP as of 2025).
- Why does Google sometimes rewrite my title tag in search results?
- Per Google's August 2021 title update, Google rewrites about 61% of titles it considers sub-optimal (Zyppy study, 80,959 titles analyzed). Common reasons: title too long (over 60 chars), too many keywords, keyword-stuffed brand name, H1 on page doesn't match title, title doesn't match user query intent. Our Meta Tag Analyzer flags all 5 of these patterns.
- Which HTTP security headers affect SEO?
- Indirectly, three matter: (1) Strict-Transport-Security (HSTS) — reinforces the HTTPS ranking signal Google announced in 2014; (2) Content-Security-Policy — can break third-party scripts if misconfigured, causing rendering issues that hurt Core Web Vitals; (3) X-Robots-Tag — direct SEO header for indexing directives. Our HTTP Headers Analyzer grades all three plus Cache-Control, X-Frame-Options, and Referrer-Policy.
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