editing-post-frontmatter

To validate MDX blog post frontmatter, check required fields like slug, title, date, excerpt, tags, and featured_image to ensure formats match site expectations. This prevents placeholder values from rendering in social previews and search snippets.

The ideal excerpt length for SEO and Open Graph previews is under 160 characters. Concise excerpts ensure metadata renders correctly across social previews and search snippets without truncation.

To enforce Title Case tags in MDX frontmatter, match new tags against the repository's canonical tag list. You can use a grep command to list existing tags and discourage creating inconsistent or placeholder tags.

Broken featured image links in social previews often occur when the frontmatter path is incorrect. Validate that the featured_image path points to a valid file inside the /public/images/ directory during pre-publish checks.

Yes, you can use automated frontmatter checks during draft review or pre-publish checks. Validate that the slug matches the filename, the date uses ISO YYYY-MM-DD format, and the draft flag is set correctly.

Blog post dates in frontmatter should use the ISO YYYY-MM-DD date format. Enforcing this standard during frontmatter validation ensures site metadata and chronological sorting render correctly.