og:description: the line under the title
og:description is the short summary shown under the title in a link preview. Facebook shows about one line, X two, Discord much more, and LinkedIn usually none. Give a reason to click in the first 100 characters.
<meta property="og:description" content="Five CI changes that took builds from 14 to 6 minutes." />100 characters
| Platform | Shows about | Yours |
|---|---|---|
| 110 chars (1 line) | Fits | |
| X (summary card) | 100 chars (2 lines) | Fits |
| 90 chars (1–2 lines) | Cut after 90 | |
| Slack | 200 chars (several lines) | Fits |
| Discord | 350 chars (several lines) | Fits |
| usually hidden | n/a |
Approximate: platforms cut by pixel width and screen size, not a fixed count. Limits are what the current apps show at typical widths.
Rules for og:description
- Optional in the protocol, but every major platform uses it.
- Aim for 80–160 characters, with the hook in the first 100.
- Falls back to <meta name="description"> when missing.
- Plain text only: HTML tags and line breaks are stripped or shown literally.
Common mistakes
- Repeating the title word for word.
- Starting with boilerplate (“Welcome to our website…”).
- Unescaped quotes that break the content attribute.
Write the full tag set in the generator, or see all tags in the Open Graph tag reference.