📝 .mdReader

🔗 Try .mdReader 🌐 Author’s Site

A lightweight browser-based tool for previewing .md (Markdown) files — supporting drag-and-drop, URL loading, manual paste, multi-tab view, PDF printing, and multi-language UI.

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✨ Features

• 🌐 Load and render remote Markdown files from a URL (CORS required)
• 📂 Drag & drop local .md files to preview instantly
• 🛡️ Prevents accidental browser file-opening outside the drop zone
• ✏️ Paste Markdown content directly into the interface and render
• 🗂️ Open multiple files in tabs
• 🖨️ Print the active tab as a clean PDF (no header/footer)
• 💾 Download current tab as raw .md file
• 🧭 Toggleable sidebar for a distraction-free layout
• 🌐 Switch between English and Simplified Chinese interface

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📦 Usage

🔹 Upload .md Files

• Drag one or more .md files into the drop zone
• Or click "Select Files" to choose from your computer

🔹 Load from URL

• Paste a raw Markdown file URL into the input field
• Click "Load and Render"
• Note: The URL must allow CORS

🔹 Paste Markdown

• Scroll down to the "Paste Markdown" section in the sidebar
• Paste any .md content into the input box
• Click Render to preview as a new tab

🔹 Save as PDF

• Click "🖨️ Save active tab as PDF"
• Make sure to:
  • Disable browser header/footer
  • Use the system’s print dialog

🔹 Save as Markdown

• Click "💾 Save as .md" to download the current tab's Markdown source
• Useful when content was loaded from URL or pasted manually (no local file available)

🔹 Language Toggle

• Use the radio buttons at the bottom of the sidebar to switch UI language

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🔍 Why Not Use Other Markdown Tools?

This tool is not an editor — it’s a reader, designed for fast and minimalistic consumption of Markdown content.

While there are powerful Markdown editors (like Typora, StackEdit, or Dillinger), this tool serves a different purpose:

Feature / Tool	VSCode Preview	Typora	Dillinger	This Tool
Requires installation	✅	✅	❌	❌
Multi-file preview	❌	❌	❌	✅
Drag-and-drop local .md files	⚠️ Partial	✅	✅	✅
Load Markdown by URL	❌	❌	❌	✅
Paste raw Markdown directly	❌	✅	✅	✅
Multi-language UI	❌	❌	❌	✅
Render-only (non-editable) interface	❌	❌	❌	✅
Export clean PDF (print-focused)	⚠️ Needs setup	✅	⚠️	✅

🧠 This viewer focuses on:

• Reading, not writing
• Quick previews, not formatting
• Zero dependencies, instant availability

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🧩 Dependencies

This project uses the following libraries via CDN:

• marked.js — Markdown parser
• github-markdown-css — GitHub-style Markdown CSS

They are included directly via <script> and <link> tags in index.html.

📄 License

This project is licensed under the MIT License.
© 2025 Cynosureturn Zenith. All rights reserved.

This project is shared in the spirit of open learning and creative exploration.
You're welcome to use or adapt it.
However, proper attribution is expected — especially in any derivative or commercial use.

See the full license text in the LICENSE file.

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🛠 This project is open-sourced at GitHub.