og:description is between 100-300 characters

og:description is the secondary text in every social link preview. Descriptions under 100 characters lack enough context to explain what a page contains, leaving users uncertain whether the link is worth clicking. Descriptions over 300 characters are truncated unpredictably: Facebook shows approximately 250 characters, LinkedIn shows less. Per ogp.me, og:description supplements the title by providing context that drives click intent. A 42-character description leaves the preview half-empty; a 400-character description gets cut mid-sentence, often at a grammatically awkward point that reads as broken copy. Both failures reduce the effectiveness of social sharing as a distribution channel.

Target og:description values between 100 and 300 characters, with the most important content in the first 150 characters since WhatsApp and some LinkedIn views truncate there. Set descriptions in src/app/layout.tsx for the root default and in per-page metadata exports or generateMetadata for content pages:

openGraph: {
  description: 'A 100–300 character summary that explains what this page is and why someone should click through from a social feed.',
}

For dynamic content, derive descriptions from the item's excerpt or summary field, trimmed to 200 characters if the source content is longer.