What frontmatter formats does it detect?

YAML (delimited by ---), TOML (delimited by +++), and JSON (delimited by ;;;). The three most common variants, covering Jekyll, Hugo, Astro, 11ty, Zola, Docusaurus, and Next.js.

Does it handle nested data?

The internal parser handles flat key/value pairs, simple arrays, inline arrays, multi-line lists, booleans, numbers, and nulls — covering 95% of real-world frontmatter. Deeply nested maps fall through as strings.

Can I convert between YAML and TOML?

Yes. Paste a file with YAML frontmatter, switch the output format to TOML, and copy the result. Round-trip between YAML, JSON, and TOML.

What happens if there's no frontmatter?

The body output shows the original document unchanged, and the frontmatter section is empty. The source format chip reads 'none'.

Markdown-frontmatter-udtraekker

Hent frontmatter ud af en Markdown-fil og konverter mellem YAML, JSON og TOML.

Markdown-dokument 0 tegn

Resultat 0 chars Brødtekst 0 chars

Output format YAML JSON TOML

Oversigt — Hvad gratis Markdown-frontmatter-udtraekker gør

Hvad dette gratis værktøj er

Free Markdown Frontmatter Extractor pulls the YAML, TOML, or JSON frontmatter block out of a Markdown file, parses it into structured data, and lets you output the result in any of the three formats.

Privatliv: Dette værktøj kører helt i din browser. Din tekst uploades, logges eller caches aldrig. Luk fanen, og den er væk. Verificer i DevTools → Network: ingen forespørgsler sendes.

Hvorfor det er gratis (og hvordan vi holder det gratis)

Läuft im Browser.

Brugstabel

Hurtigoversigt

Input	Output	Typisk størrelse	Hastighed	Login kræves
Markdown (.md) with frontmatter	Parsed frontmatter (YAML/JSON/TOML) + body	Any post size	< 10 ms	No