How it works

Open Graph tags control how your page appears when shared on Facebook, LinkedIn, and most chat apps. Twitter Card tags control the preview on X/Twitter specifically.
Length guidance: keep titles under ~60 characters and descriptions under ~160 — the counters turn red past those points, since search engines truncate longer text.
Robots directives tell crawlers whether to index the page and follow its links — use "noindex" for pages you don't want appearing in search results.
The previews above are approximations of how Google and social platforms typically render your page — actual display varies by platform.