What gets changed during Markdown formatting?
The tool fixes spacing around headers (`#Heading` to `# Heading`), standardizes list marker indentation, separates paragraphs with proper newlines, and aligns code block fences.
Markdown Formatter (Prettier for Markdown) instantly takes messy, inconsistently formatted, or cramped Markdown text and transforms it into clean, perfectly aligned documentation. Standardizing spacing around headers, correcting list indentation, and enforcing empty lines between blocks ensures your GitHub READMEs, open-source docs, and technical blog posts are highly readable and conform to CommonMark style guidelines.
The formatter parses your text into an Abstract Syntax Tree (AST) using standard Markdown rules, then regenerates the document using strict formatting rules. It guarantees one space after heading hashes, exactly one blank line before and after lists/code-blocks, and standardizes unordered list markers (using asterisks or hyphens depending on settings).
The tool fixes spacing around headers (`#Heading` to `# Heading`), standardizes list marker indentation, separates paragraphs with proper newlines, and aligns code block fences.
No. The formatter only modifies structural whitespace, indentation, and list markers. Your textual content, links, and code snippets remain absolutely untouched.
No. Standard inline HTML blocks are preserved safely during the AST parsing and re-rendering process.
A linter warns you about rules you broke (like incorrect heading depth). A formatter actively rewrites the file to fix spacing and alignment issues for you automatically.
No. Formatting is calculated purely via client-side JavaScript in your browser. Your sensitive internal documentation is completely private.
Yes, it is entirely free forever with no size restrictions.
Tool workspace
Free Markdown formatter online — instantly beautify and pretty-print messy Markdown files. Fixes spacing, lists, heading indentations, and blockquotes automatically. No login.
Output
Input
#Title text here -item 1 -item 2
Output
# Title text here * item 1 * item 2