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Markdown Formatter — Free Prettier-Based Markdown Beautifier

Reformat Markdown with Prettier. Consistent spacing, list markers, and link layout.

Free No signup Client-side Privacy friendly Updated

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How to use

  1. 1 Paste Markdown. The formatter library loads on first input — first format may take a second.
  2. 2 Tune Print width and Prose wrap to match your repo style.
  3. 3 Copy or download the result.

Why use this tool

  • Powered by Prettier — the industry-standard code formatter.
  • Loaded on demand — page stays light for SEO.
  • Three prose-wrap modes — preserve, hard-wrap, or single-line per paragraph.
  • Handles tables, code blocks, frontmatter, footnotes.

Frequently asked questions

Why does Markdown formatting need Prettier?

Markdown has many ambiguous rules. Prettier enforces consistent spacing, list markers, link wrapping, and code-fence style — useful for repos with multiple contributors.

What does "Prose wrap" do?

Preserve keeps your line breaks. Always wraps lines longer than the Print width. Never joins each paragraph onto one line.

Will it modify the rendered output?

No — Prettier never changes the rendered HTML, only the source formatting. The rendered Markdown is byte-identical before and after.

What is Markdown Formatter?

A Markdown Formatter is a tool that reformats Markdown source using Prettier. It normalizes spacing, list markers, and link layout so documents follow a consistent, predictable style. Running entirely in the browser, it applies the same formatting rules across a file to keep Markdown clean and uniform without sending the content to a server.

Features

Prettier engine

Uses Prettier's Markdown parser for the same deterministic formatting a CI check would apply.

Consistent lists & tables

Unifies bullet markers to a single style and pads table columns into aligned, readable rows.

Configurable

Set print width, indent width, and prose-wrap (preserve, always, or never).

100% private

Runs client-side — your document never leaves the browser.

Example

Input

#  Zerethon Tools

*  Fast
*   Private
*  Free

Output

# Zerethon Tools

- Fast
- Private
- Free

Common use cases

  1. 1

    Clean up a README

    Normalize inconsistent headings, bullets, and tables before committing documentation.

  2. 2

    Match a repo style

    Apply Prettier's Markdown rules locally so files pass a project's formatting check.

  3. 3

    Align Markdown tables

    Turn a hand-typed, ragged table into evenly padded columns.

Summary

Zerethon's Markdown formatter reformats Markdown source with Prettier entirely in your browser. It normalizes heading spacing, unifies list markers to a single style, and aligns table columns for consistent, diff-friendly output, with configurable print width, indent, and prose-wrap. Nothing is uploaded.

Category
Developer
Pricing
Free
Privacy
Browser-based
Signup
Not required

References

Privacy

Your data never leaves your browser unless explicitly stated. Markdown Formatter runs entirely client-side — no server upload, no logging, no tracking of your input.

Compare

Markdown vs HTML

Learn the basics

What is Markdown?

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