Markdown Formatter — Clean & Normalize Markdown Online

Category: Text · URL: /tools/markdown-formatter.html

Input Markdown

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Normalize newlinesConvert Windows/Mac line endings to LF (\n). Trim trailing spacesRemoves end-of-line spaces (outside code fences). Fix heading spacingEnsures a single space after # in headings. Normalize list bulletsConverts *, + to - (won’t touch horizontal rules). Collapse blank linesLimits multiple blank lines to a single blank line (outside code fences). Ensure final newlineAdds a newline at the end of the file. Convert tabs to spaces Applies outside code fences.

Tab size

Formatted Output

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Tip: This tool preserves content inside fenced code blocks (``` or ~~~) and only formats outside them.

Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Use it to clean up Markdown before sharing or committing.

Paste Markdown into the input box.
Choose formatting options (or keep the defaults).
Click Format Markdown.
Copy the output or continue editing.

Keywords this page targets (natural cluster): markdown formatter, format markdown online, markdown prettifier, markdown beautifier, clean markdown, normalize markdown, fix markdown list formatting, markdown bullet normalization, markdown heading formatter, remove trailing spaces markdown, collapse blank lines markdown, convert tabs to spaces markdown, normalize line endings markdown, markdown lint quick fix, prettify readme markdown, format github markdown, markdown cleanup tool, standardize markdown style

Secondary intents covered: Make Markdown headings consistent (space after #), Normalize unordered list markers to a single style, Remove trailing whitespace without breaking code fences, Convert CRLF to LF for Git/GitHub, Collapse excessive blank lines for cleaner diffs, Convert tabs to spaces for consistent indentation, Quickly copy the formatted Markdown output, Prepare README.md text before committing, Clean pasted Markdown from editors or chats

FAQ

Does this formatter change my Markdown meaning?

It’s designed to be conservative: it mostly normalizes whitespace, headings, and list markers. Content inside fenced code blocks is preserved.

Will it modify code blocks?

No—lines inside triple-backtick or triple-tilde fences are left as-is (including tabs and trailing spaces).

What list bullets does it output?

It normalizes unordered list markers to - (dash) and keeps horizontal rules like *** or --- unchanged.

Can I keep multiple blank lines?

Yes—turn off “Collapse blank lines” to keep your original blank-line spacing.

Does it convert Windows line endings?

Yes—enable “Normalize newlines” to convert CRLF/CR to LF for cleaner diffs in Git.

Is my text uploaded to a server?

No. Formatting runs locally in your browser; the tool doesn’t make network requests.

Why add a final newline?

Many editors and linters expect files to end with a newline; it avoids “no newline at end of file” diffs.