Markdown Editor & Generator

A complete Markdown workbench in your browser

Whether you're writing a README, an API reference, a changelog, a blog post or just notes, this editor gives you live preview, sensible defaults, and the export options you actually need — all running locally, no signup, no upload.

GitHub Flavored Markdown (GFM)

The parser is marked v12, the same engine that powers many static-site generators and code editors. It supports the GFM features developers expect:

• Tables with | col1 | col2 | syntax
• Task lists with - [ ] and - [x]
• Strikethrough with ~~text~~
• Fenced code blocks with ```language
• Autolinked URLs and emails

内置目录

Insert [[toc]] anywhere in your document and we'll generate a navigable list of all H2/H3/H4 headings. Useful for long READMEs and reference docs.

轻量代码高亮

Code blocks are syntax-highlighted with a minimal in-house engine that recognizes strings, comments, numbers and common keywords across JavaScript, Python, Go, Rust, SQL and shell. It's not as fancy as Prism or highlight.js but it adds under 1 KB instead of 80-200 KB. For most documentation purposes the difference is invisible.

可用模板

Pick one from the dropdown to instantly bootstrap:

• README — features, install, usage, API, contributing, license.
• API Reference — endpoints, auth, error codes, example requests/responses.
• Changelog — Keep-a-Changelog format with Added/Changed/Fixed/Deprecated sections.
• Blog post — hook → problem → attempt → breakthrough → solution → lessons.

两种导出格式

• .md — your raw Markdown source.
• .html — a self-contained HTML file with embedded CSS, 阅读y to drop into any web server or send by email. Looks clean on its own.

安全 HTML 输出

Markdown allows inline HTML, which means a malicious Markdown source could inject scripts or unsafe URLs (javascript:, etc.) into the HTML output. We sanitize everything with DOMPurify, the same library used by Gmail, ProseMirror and many other products. You can safely copy the HTML output and paste it into a CMS, blog or email without worrying about XSS.

自动保存

Your draft is saved to your browser's localStorage every 2 seconds. Close the tab, come back tomorrow — your text will still be there. (It's local only — never uploaded.)

键盘快捷键

• Cmd/Ctrl + B — wrap selection in bold
• Cmd/Ctrl + I — wrap selection in italic
• Cmd/Ctrl + K — insert a link (prompt for URL)

隐私

Everything runs in your browser tab — markdown parsing, sanitization, rendering, saving. We don't upload your content, log your usage, or run analytics on what you type. The only network requests this page makes are the one-time CDN loads of marked and DOMPurify.

常见使用场景

• Draft a GitHub README and paste it in directly.
• Write internal documentation that exports to a standalone HTML email.
• Quick-format a Slack post or forum reply.
• Convert old plain-text notes into beautifully rendered docs.
• Practice Markdown syntax with instant feedback.