Introducing frontmatter support in MD-Vis

Paste a Markdown file that starts with a YAML frontmatter block and MD-Vis now shows it as a tidy, collapsible metadata panel instead of stray --- text.

Published 2026-06-19

Many Markdown files — especially those from static-site generators and note apps — begin with a frontmatter block: a fenced section of YAML metadata such as title, author, date and tags. Until now, MD-Vis rendered that block as a horizontal rule followed by raw text. No longer.

What changed

MD-Vis detects a leading frontmatter block, parses it, and renders a collapsible Frontmatter panel above your document. The metadata is stripped from the body so it no longer leaks into the rendered output or your exports.

What it supports

• Strings, numbers, booleans and null.
• Inline arrays ([a, b]) and block lists.
• Nested maps and lists of maps.
• Multi-line YAML block scalars (>- folded and | literal).

Try it

Open the editor and paste a file that starts with a --- block. For a deeper look at the syntax, read Markdown frontmatter explained.