Markdown Editor & Live Preview
Free online split-pane Markdown editor with real-time live preview. Features formatting toolbar (headings, bold, lists, code, tables), word counter, and instant .md file download.
Welcome to Zapy Markdown Editor 🚀
Write, edit, and preview Markdown side-by-side with real-time rendering.
Key Highlights
- Fast & Private: Runs 100% in your browser.
- GitHub Flavored Markdown: Tables, task lists, code blocks, and formatting.
- Zero setup: Just type and export!
Quick Example Table
| Feature | Supported | Performance |
|---|---|---|
| Real-time Preview | Yes | Instant |
| GFM Tables | Yes | 100% Client-side |
| Syntax Toolbar | Yes | Zero Latency |
| Task Checklists | Yes | Interactive |
Project Tasks
- Integrate high-performance GFM table engine
- Real-time side-by-side synchronized rendering
- Export HTML and Markdown documents
"Simplicity is the soul of efficiency." — Austin Freeman
const greeting = "Hello Markdown World!";
console.log(greeting);Step-by-Step Instructions
Write or Paste Markdown
Type GitHub Flavored Markdown (GFM) in the left editor pane with real-time syntax highlighting.
Use Quick Formatting Toolbar
Insert Headings, Bold, Italic, Strikethrough, Tables, Code Blocks, and Links using keyboard shortcuts or toolbar buttons.
Inspect Synchronized Live Preview
View instant synchronized side-by-side HTML preview that scrolls in tandem with the editor.
Export to HTML, PDF, or MD
Copy rendered HTML markup, download the .md file, or export as a styled PDF document.
Key Features & Capabilities
- Synchronized dual-pane split editor with scroll sync between Markdown source and rendered HTML preview
- Full GitHub Flavored Markdown (GFM) support: tables, task checklists, footnotes, emoji shortcodes (`:smile:`), and fenced code blocks
- Math formula rendering with KaTeX LaTeX notation ($E = mc^2$ and $$\int_0^\infty f(x)dx$$)
- Mermaid diagram rendering (flowcharts, sequence diagrams, architecture graphs)
Frequently Asked Questions
Does the live markdown editor support LaTeX mathematical formulas?
Yes. The editor includes KaTeX math rendering: wrap inline equations in single dollar signs (e.g., `$E = mc^2$`) and multi-line display equations in double dollar signs (`$$\frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$`).
Can I render Mermaid.js diagrams inside the markdown preview?
Yes. Fenced code blocks with the `mermaid` language tag automatically render as interactive SVG diagrams (Flowcharts, Sequence diagrams, State diagrams, Class diagrams, Gantt charts).
Does the editor save my draft if I close the browser tab?
Yes. Your markdown draft is continuously auto-saved to local browser `localStorage`. When you return to the page, your document is restored immediately.
Can I export my markdown document directly to a styled PDF?
Yes. Click 'Export PDF' to format the rendered markdown with print-optimized typography, proper page margins, and syntax-highlighted code blocks ready for printing or saving.
Related Utilities
Discover complementary online tools in the same workflow.
Markdown to HTML Converter
Convert Markdown text to clean HTML markup with live side-by-side visual preview.
JSON Formatter & Validator
Format, beautify, minify, validate, and view JSON data online with instant syntax highlighting and error detection.
Base64 Encoder & Decoder
Encode text or binary data into Base64 format or decode Base64 back into raw string format.
CSV to JSON Converter
Easily convert CSV data to clean JSON format. Turn tabular spreadsheets into structured JSON.
YAML to JSON Converter
Convert YAML configuration files into structured JSON for APIs and modern web tooling.
JWT Parser & Token Debugger
Decode JWT tokens to view header, payload claims, and expiration status without sending secrets anywhere.