og:title is between 40-90 characters

og:title is the primary text users see when a link is shared. Titles under 40 characters fail to communicate what the page is about, wasting the preview's most prominent real estate. Titles over 90 characters are truncated at approximately 88 characters on Facebook and 70 on Twitter/X, cutting off meaningful content mid-word. Per ogp.me, og:title is a required field and its visible length determines whether users click through. A 10-character title like 'My App' renders as dead copy in a link preview; a 102-character title gets sliced at an arbitrary point chosen by the platform. Both failures reduce click-through rates on social shares without any visible error to the developer.

Target og:title values between 40 and 90 characters. For static pages, set them in app/layout.tsx or per-page metadata exports. In Next.js, configure the title in the openGraph block:

export const metadata: Metadata = {
  openGraph: {
    title: 'AuditBuffet — Adversarially-Tested Audit Prompts for AI-Built Apps',
  },
}

For dynamic pages using generateMetadata, keep titles to the item name plus site context: ${post.title} — ${siteName}. Measure character counts; truncation occurs at 70 characters on Twitter/X and 88 on Facebook. Titles that work at 70 characters are safe across all platforms.