Paste your Markdown and clean up formatting issues automatically — fix scrambled headings, broken links, missing image descriptions, and jumbled lists. See what changed before and after. All in your browser, no upload.
Paste your Markdown and get a full diagnostic in seconds — scrambled heading levels, missing image alt text, broken links, code blocks without language tags, and more. Each issue is grouped by severity with a checkbox so you decide what gets fixed. Unlike basic linters, this tool can auto-fix most issues instantly, with side-by-side preview before downloading. Everything runs in your browser.
Start with the issues the tool can resolve without changing your meaning. In the built-in example, it clears 8 of 11 findings automatically.
| What the tool cleans | What you get |
|---|---|
| Spacing and block layout | One click: cleans trailing spaces, hard tabs, heading spacing, and required blank lines around lists and blocks. |
| List consistency | One click: normalizes list marker style and required list spacing. |
| Safe Markdown cleanup | One click: standardizes bare URLs and other Markdown syntax where there is one unambiguous correction. |
| You stay in control | One click fixes the formatting. When a detail needs information only you know, such as where a link should go or what an image should describe, the tool points you to the exact spot. Your words and message stay unchanged. |
Paste Markdown directly or drop a .md file onto the page. Import button works for any local file.
Most formatting issues are fixed with a single click. No need to edit your document line by line.
See exactly what changed before and after the fix. Toggle between views to make sure nothing important was lost.
Each issue has a checkbox. Skip the ones you want to keep as-is, and only fix the rest.
Your Markdown never leaves your browser. No server uploads, no data storage, no tracking. Verifiable in DevTools.
Issues appear as soon as you paste. No waiting, no submit button. Free forever.