Online Markdown Viewer
DocBox renders Markdown locally in your browser: open a .md file or folder, jump through the outline, search the document, and export it as standalone HTML or PDF — without uploading anything.
How it works
- Open a .md file, drop it onto the window, or paste content in Edit mode
- Diagrams written as PlantUML or Mermaid code blocks render automatically
- Click any diagram to zoom fullscreen, or export it as SVG / PNG / JPG
- Export the whole document as standalone HTML or print it to PDF
Frequently asked questions
- Can I view Markdown files without installing anything?
- Yes. DocBox runs entirely in your browser — open the page, drop a .md file in, and it renders immediately. Nothing is installed or uploaded.
- Does it support tables, code blocks and math?
- Yes: tables, syntax-highlighted code blocks, task lists, blockquotes, and KaTeX math written as $...$ inline or $$...$$ display formulas.
- Can I open a whole folder of documents?
- Yes — open a folder to get a file tree alongside the outline panel, and images referenced with relative paths are resolved from the same folder.
- Is there a dark mode?
- Light and dark themes are both included, and the interface switches between English and Chinese.