Telegram link preview checker
Telegram shows og:site_name as a coloured header, then the title, description and image.
Tags Telegram reads
| Field | Tags, in fallback order |
|---|---|
| Site name | og:site_name |
| Title | og:title → twitter:title → <title> |
| Description | og:description → twitter:description |
| Image | og:image → twitter:image |
Image requirements
| Recommended | 1200×630 |
|---|---|
| Minimum | 100×100 |
| Maximum weight | 5 MB |
| Formats | JPEG, PNG, WebP |
Card layout
Wide images, or pages that set twitter:card to summary_large_image, get a large photo. Other images show as a small thumbnail on the right.
How to refresh the Telegram preview cache
Send the URL to @WebpageBot in Telegram to clear its cached preview.
Common problems
- A stale preview is cached server-side. Refresh it with @WebpageBot.
Rule confidence: observed.