Markdown Editor
About the Markdown
Write Markdown with a live side-by-side preview - GitHub-flavored, with tables, task lists, and syntax-highlighted code blocks. A free, private markdown editor that runs entirely in your browser.
Markdown is the writing format of modern development: READMEs, documentation sites, pull requests, issues, and static site generators all use it. A live side-by-side editor shows exactly how your Markdown will render while you write it.
This editor supports the full GitHub-Flavored Markdown feature set: tables, task lists, fenced code blocks with syntax highlighting, and inline HTML. Files stay in your browser — nothing is synced or uploaded.
Use cases and examples
Draft README files with the exact rendering GitHub will show, catching table and formatting mistakes early.
Preview documentation before committing it to a docs site or wiki.
Convert rough notes into shareable HTML for emails and internal pages.
How to use
- Type Markdown in the left pane.
- The rendered preview updates live on the right.
- Use tables, code fences, and task lists just like on GitHub.
- Copy the HTML or keep your Markdown for your README.
Frequently Asked Questions
Which Markdown flavor is supported? ▾
GitHub-Flavored Markdown (GFM): tables, task lists, fenced code blocks with syntax highlighting, strikethrough, and autolinking — the same rendering you see in GitHub READMEs.
Is this tool free to use? ▾
Yes! This tool is 100% free. No signup, no credit card, no limits. It's part of Formatho's privacy-first developer toolkit.
Is my data safe? Does this tool send data to a server? ▾
Absolutely. This tool runs entirely in your browser. Your data never leaves your device. Zero server-side processing, zero tracking.