How to use
- Click Open file and select a Markdown file to edit.
- Click Split to see the editor and live preview side by side.
- Select text and click Bold (Ctrl+B) to make it bold.
- Click Download .md to save your edited Markdown.
Examples
Project README with code and tasks
# CSV Cleanup Clean up customer CSV files before importing them. ## Setup ```bash npm install npm run clean -- customers.csv ``` ## Release checklist - [x] Remove duplicate rows - [ ] Add ZIP code validation
<h1>CSV Cleanup</h1> <p>Clean up customer CSV files before importing them.</p> <h2>Setup</h2> <pre><code class="language-bash hljs" data-highlighted="yes">npm install npm run clean -- customers.csv</code></pre> <h2>Release checklist</h2> <ul> <li><input type="checkbox" disabled="" checked=""> Remove duplicate rows</li> <li><input type="checkbox" disabled=""> Add ZIP code validation</li> </ul>
Inventory table with aligned columns
| Item | Location | In stock | | :--- | :---: | ---: | | Shipping labels | A1 | 240 | | Padded mailers | B3 | 85 | | Packing tape | C2 | 12 |
<table> <thead> <tr> <th align="left">Item</th> <th align="center">Location</th> <th align="right">In stock</th> </tr> </thead> <tbody><tr> <td align="left">Shipping labels</td> <td align="center">A1</td> <td align="right">240</td> </tr> <tr> <td align="left">Padded mailers</td> <td align="center">B3</td> <td align="right">85</td> </tr> <tr> <td align="left">Packing tape</td> <td align="center">C2</td> <td align="right">12</td> </tr> </tbody></table>
Keep address lines separate
## Shipping address Jordan Lee 123 Maple Street Springfield, IL 62704
<h2>Shipping address</h2> <p>Jordan Lee<br>123 Maple Street<br>Springfield, IL 62704</p>
Need a PDF? Print the preview with Print / Save as PDF, or edit and merge PDFs with Free PDF Modify. Building a table? Try the Table Formatter.
FAQ
Does this Markdown viewer support Mermaid diagrams and math?
Fenced code blocks labeled mermaid render as diagrams. Use $…$ for inline math and $$…$$ for display math, rendered with KaTeX.
Can I paste formatted text from Word or Google Docs?
Keep Convert rich paste (Word, Google Docs) enabled to convert formatted clipboard content to Markdown, including lists and tables. For plain text, turn it off or press Ctrl+Shift+V on Windows or Command+Shift+V on Mac.
How do I export Markdown to PDF?
Click Print / Save as PDF, then choose Save as PDF in your browser’s print dialog. Only the rendered preview is printed, in a light color scheme.
Is my Markdown uploaded or saved?
The tool processes your Markdown in your browser without sending the text to a server. Your draft is saved in this browser’s local storage; Clear removes it. External images load from their original servers, which can see your IP address.
What Markdown files can I open?
You can open .md, .markdown, .mdown, .mkd and .txt files up to 10 MB. Split larger files before opening them.