Markdown · Cleaner · Converter

Markdown Studio

Paste Markdown. Clean common formatting bugs. Strip AI writing tells. Find and replace. Preview the rendered HTML and copy or download in any format.

Shortcuts: Ctrl/⌘ F find · Ctrl/⌘ S save .md · Ctrl/⌘ K clean · drop a .md file anywhere

Find

Replace

Match case Whole word Regex

Markdown Input

Rendered Preview

Raw HTML Output

0 words 0 chars 0 min read Idle

Markdown Quick Reference

Headings

# H1
## H2
### H3

Emphasis

**bold**   __also bold__
*italic*   _also italic_
***bold italic***
~~strikethrough~~
`inline code`

Lists

- bullet
* also a bullet
+ also a bullet

1. ordered
2. ordered

- [ ] task to do
- [x] task done

Links and Images

[text](https://example.com)
![alt text](image.png)

Code Block (with language)

```python
def hello():
    print("hi")
```

Tables

| Term | Meaning |
|------|---------|
| MD   | Markdown |
| HTML | HyperText Markup |

Blockquote and Rule

> Quoted line.

---

What "Clean Markdown" Fixes

Normalizes Windows line endings (\r\n → \n).
Trims trailing spaces on every line.
Collapses duplicate heading markers like ### ## Title down to a single level.
Adds the missing space after heading hashes (##Title → ## Title).
Converts • and * bullets to -.
Normalizes checkboxes (-[ ], - [ ] → - [ ]).
Forces ordered list markers to N. form.
Adds blank lines around headings and code fences so renderers parse them correctly.
Normalizes table separator rows.
Collapses 3+ blank lines down to 2.

What "Strip AI Tells" Removes

One click cleanup for the typical fingerprints of LLM-generated prose. Run this after Clean Markdown for best results.

Curly quotes ("" '') → straight quotes (" ').
Em-dashes used as parentheticals (word — word) → comma-comma.
Non-breaking spaces and zero-width characters → regular space / removed.
Decorative emoji bullets (✨ 🚀 ✅ etc. at start of bullet) → removed.
Trailing colons after headings (## Overview: → ## Overview).
Common stock phrases removed where they begin a sentence: "It's important to note that", "It's worth noting that", "In conclusion,", "In summary,", "Furthermore,", "Moreover,", "As we navigate", "In today's fast-paced world,", "In the ever-evolving landscape of".
"Delve into" → "explore". "Leverage" → "use". "Utilize" → "use".

This is opinionated. Skim the diff in your editor before publishing — sometimes you actually want an em-dash.

Keyboard Shortcuts

Action	Shortcut
Open Find / Replace	`Ctrl`+`F` · `⌘`+`F`
Find next match	`Enter` in Find field
Find previous	`Shift`+`Enter` in Find field
Close Find bar	`Esc`
Save .md	`Ctrl`+`S` · `⌘`+`S`
Clean Markdown	`Ctrl`+`K` · `⌘`+`K`
Drop a file	Drag a `.md` or `.txt` file onto the page

Privacy and Storage

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