Telegram link preview tester

Paste a URL and see the preview card Telegram will render when somebody shares it. We fetch the page with Telegram's same crawler user-agent and parse the Open Graph / Twitter Card / standard meta tags the same way it does.

What Telegram looks for, in order

1. Title: og:title → twitter:title → <title>
2. Description: og:description → twitter:description → <meta name="description">
3. Image: og:image → twitter:image (must be reachable over HTTPS, <5MB, ideally 1200×630)
4. Site name: og:site_name → hostname

Image gotchas

• Telegram requires an absolute HTTPS URL. Relative paths are silently ignored.
• Minimum 200×200 to render; ideal aspect ratio 1.91:1 (1200×630).
• If the image is behind hotlink protection or auth, Telegram falls back to a text-only card.
• WebP and AVIF work on modern clients; older Android still prefers JPEG/PNG.

Forcing a re-crawl

Telegram aggressively caches link previews. Three ways to force a refresh:

• Add a unique query string (?v=2, ?r=1), the URL is a different cache key.
• Send the URL to @WebpageBot, official re-crawl trigger.
• Wait ~12 hours and Telegram refreshes on its own.