Markdown Preview - Live Editor & Renderer
Write Markdown on the left, see the rendered preview on the right — instant rendering with full syntax support.
What Is a Markdown Preview Tool?
A Markdown preview tool lets you write Markdown — a lightweight markup language — and instantly see how it renders as formatted HTML. This tool provides a side-by-side editor and preview: type on the left, see the result on the right in real time. It supports all common Markdown syntax including headings, bold, italic, code blocks, tables, lists, blockquotes, links, and images. No external libraries are loaded — the parser runs entirely in your browser.
How to Use the Markdown Preview
- Write Markdown — Type or paste Markdown syntax in the left editor pane
- See Live Preview — The right pane updates instantly as you type
- Use Full Syntax — Headings (#), bold (**), italic (*), code (```), tables (|), lists (- or 1.), blockquotes (>), links, images, and more
- Copy Markdown — Click "Copy MD" to copy your raw Markdown text
- Copy HTML — Click "Copy HTML" to copy the rendered HTML output
Why Use This Markdown Preview?
- Instant Rendering — No delay, no compile step. Preview updates on every keystroke
- Full Syntax Support — Handles headings, bold, italic, code blocks, tables, lists, blockquotes, links, images, and horizontal rules
- No Dependencies — Built-in Markdown parser with zero external libraries loaded
- Dark Theme — Easy on the eyes with a dark-themed preview that matches the editor
- Copy Both Formats — Export your work as raw Markdown or rendered HTML with one click
- Privacy First — Everything runs in your browser. No text is ever sent to a server
FreeToolbox vs Other Markdown Editors
| Feature | FreeToolbox | Dillinger.io | StackEdit |
|---|---|---|---|
| Browser-based | Yes | Yes (but server) | Yes (but server) |
| No account needed | Yes | Yes | Google/GitHub login |
| Live preview | Yes | Yes | Yes |
| Table support | Yes | Yes | Yes |
| Copy HTML | Yes | Export only | Export only |
| No external libraries | Yes | No (marked.js) | No (multiple) |
| Dark theme | Yes | No | Optional |
FAQ
What Markdown syntax is supported?
This tool supports headings (# through ######), bold (**text**), italic (*text*), strikethrough (~~text~~), inline code (`code`), fenced code blocks (```), blockquotes (>), unordered lists (- or *), ordered lists (1.), links, images, tables, and horizontal rules (---).
Does it use an external Markdown library?
No. The Markdown parser is built from scratch and runs entirely in your browser. No external libraries like marked.js or showdown are loaded.
Can I export the rendered HTML?
Yes. Click the 'Copy HTML' button to copy the rendered HTML to your clipboard. You can then paste it into any HTML file or editor.
Is my text saved anywhere?
No. Everything runs locally in your browser. Your Markdown text is not saved, stored, or transmitted. If you close the tab, the content is gone.
Does it support GitHub Flavored Markdown (GFM)?
It supports the most common GFM features including tables, strikethrough, and fenced code blocks. Some advanced GFM features like task lists and autolinks are not yet supported.