YAML Metadata ToolHugo • Astro • Jekyll • Next.js

Markdown Frontmatter Parser & Editor

Inspect, edit, and validate YAML frontmatter headers in your Markdown articles. Add metadata attributes visually or strip frontmatter with 1 click.

Markdown Document
YAML Frontmatter detected690 characters
Frontmatter Attributes (6)
title:
Modern Jamstack Architecture Guide
date:
2026-09-01
author:
Alex Rivers
category:
Web Engineering
draft:
false
tags:
nextjs, tailwind, markdown, seo
Body length: 514 charactersZero Server Uploads
Complete Guide & Overview

Parse, Edit & Strip YAML Frontmatter in Markdown Online

Inspect and manage YAML frontmatter metadata in static site generator blogs (Astro, Hugo, Jekyll, Next.js, Nuxt). Edit key-value pairs visually or strip frontmatter completely before publishing.

How to Use the Markdown Frontmatter Parser

1

Paste Article with Frontmatter

Paste your blog post or documentation page containing opening and closing --- fences.

2

Inspect or Edit Attributes

View all detected attributes in the right panel or click 'Edit Attributes' to modify them.

3

Apply or Copy

Apply changes back into the document or click 'Copy Body Only' to extract the content.

Key Features & Capabilities

Visual Key-Value Editor: Edit blog titles, tags, dates, and authors in a clean visual form.
One-Click Frontmatter Stripper: Remove --- metadata blocks to leave pure, unadorned Markdown text.
Copy Body Only: Extract the article content without the metadata header for cross-posting.
Preserves Syntax: Generates valid YAML formatting compliant with common static site generators.
100% Client-Side: Zero network requests; perfect for drafts, confidential releases, and private blogs.

Pro Tips & Best Practices

  • •Use this tool when migrating blog posts between different static site generators (e.g. Jekyll to Astro) to normalize your YAML frontmatter keys.

Frequently Asked Questions

What is Markdown frontmatter?

Frontmatter is a block of metadata at the very beginning of a Markdown file enclosed by triple dashes (---). Static site generators like Hugo, Astro, Jekyll, and Docusaurus use it for post titles, dates, tags, and authors.

Why would I want to strip frontmatter?

When cross-posting articles to platforms like Medium, Substack, or LinkedIn, frontmatter causes unsightly raw YAML to appear at the top. Stripping it cleans the article instantly.

Can I add new metadata fields?

Yes! Click 'Edit Attributes' and then 'Add Key' to insert new custom metadata fields.