Markdown Front Matter Checker

Audit Markdown drafts before publishing: required fields, duplicate keys, valid dates, slugs, tags, and copy-ready cleaned metadata.

Markdown draft

Cleaned front matter

Run the check to generate cleaned metadata.

Required fields

Description max length

Runs locally in your browser. It handles common one-line front matter values and flags anything that needs a manual pass before publishing.

Fields

Duplicates

Missing

Publishing readout

Paste a Markdown draft with front matter to check metadata readiness.

Ready.