How to build yaml frontmatter for blog posts
- Step 1Drop the post body — Upload the Markdown post that needs frontmatter.
- Step 2Fill the form — Enter title, date, tags, slug, description, and draft status.
- Step 3Generate — Click Run — properly formatted YAML is prepended.
Frequently asked questions
Will this overwrite existing frontmatter?+
Yes. Existing frontmatter is replaced.
Can I add custom fields?+
Form has common fields. Add custom YAML keys manually after running.
Why YAML and not TOML?+
YAML has the widest SSG support.
Privacy first
All Markdown processing runs locally in your browser using JavaScript. No file is ever uploaded to JAD Apps servers — only metadata counters are saved for signed-in dashboard stats.