Markdown Formatter
Normalize Markdown heading/list spacing and align table columns.
Processed locally in your browser. Nothing you enter is uploaded or stored.
- Consistent heading spacing, one list-marker style and predictable blank lines.
- Re-aligns table columns to a consistent width, preserving any left/center/right alignment markers — no more hand-counting dashes and spaces.
- Strips trailing whitespace from every line.
- Cleans up Markdown assembled from multiple sources.
- Runs in your browser; content isn't uploaded.
Why this is private
- Processed locally in your browser. Nothing you enter is uploaded or stored.
- Open your browser's DevTools → Network tab while using this tool — you won't see a request carrying your input, because it never leaves your device.
- Nothing you enter is uploaded to a server or shared with us — the processing happens entirely on your device.
Overview
Normalizes common Markdown inconsistencies — heading spacing, list markers, blank lines between blocks, trailing whitespace, and table column alignment — into a clean, consistent format.
How to use it
- 1Paste Markdown.
- 2The normalized output updates automatically — including any tables, re-aligned to consistent column widths.
Tips
- This normalizes spacing, markers and table alignment; it doesn't validate or rewrite Markdown syntax.
Frequently asked questions
What people use it for
Tidy a README before committingNormalise spacing and list markers so the diff is small and the file reads cleanly.
Fix a messy table from a merge or multiple editsRe-align every column to a consistent width in one pass, instead of hand-counting dashes and spaces.
Merge notes from different toolsUnify Markdown pasted from an editor, a chat and a doc export.
Prepare Markdown for a static siteConsistent formatting reduces surprises when it's rendered.
Clean AI-generated MarkdownFix uneven blank lines, mixed `-`/`*` bullets and unaligned tables in one pass.
Related guides
- How to read JSON with a tree viewerA tree viewer turns a wall of brackets into a structure you can expand, search and copy paths from. Here's how to use one effectively.
- JSON parse errors explained: 'Unexpected token', 'Expected comma or brace', and the restWhat each common JSON error message actually means, the usual cause, and how to find the spot fast using line and column.
- How to format JSON (and actually understand the errors)JSON looks like a JavaScript object but follows stricter rules. Here's what those rules are and how to read the errors when they're broken.
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Markdown Formatter