Here is a complete tutorial guide for OnionShare – a secure, anonymous file sharing and messaging tool built on top of the Tor network.

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🧅 OnionShare – Complete Tutorial Guide

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📌 What is OnionShare?

OnionShare is a free and open-source tool that allows you to share files, host websites, and chat securely and anonymously over the Tor network without requiring any third-party server or service.

Created by: Micah Lee, and maintained by Freedom of the Press Foundation
Official site: https://onionshare.org/

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🔒 Why Use OnionShare?

Feature	Benefit
✅ File Sharing	Securely send files using a .onion URL
✅ Anonymous Chat	Real-time messaging with no metadata
✅ Anonymous Website Hosting	Create a temporary .onion site on your machine
✅ Secure by Design	Peer-to-peer, end-to-end encrypted
✅ No Cloud or Server	No third-party server, no upload to internet

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💻 Supported Platforms

• Windows
• macOS
• Linux (Debian/Ubuntu/Fedora)
• Tails OS (with special configuration)

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📦 1. How to Install OnionShare

✅ Method 1: From Official Site

👉 Download from: https://onionshare.org

✅ Method 2: Linux (Debian/Ubuntu)

sudo apt install onionshare

✅ Method 3: Using Flatpak

flatpak install flathub org.onionshare.OnionShare

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🚀 2. How to Use OnionShare

OnionShare has four core modes: File Sharing, Receive Files, Chat, and Website Hosting.

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🔁 A. Send Files Anonymously

1. Launch OnionShare
2. Select “Send Files”
3. Drag and drop files/folders
4. Click “Start Sharing”
5. A .onion link will appear, e.g.: http://exampleabcd123.onion
6. Share the link with the recipient
   • They must open it using Tor Browser

🛡 The file is hosted directly from your computer, and shuts down automatically after the session (or if you choose to).

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📥 B. Receive Files Anonymously

1. Go to Receive Files tab
2. Start the server
3. A secure .onion page appears where others can upload files directly to you

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💬 C. Anonymous Chat (OnionShare Chat Room)

1. Choose Chat tab
2. Click “Start Chat Server”
3. Share the generated .onion link
4. All participants open the link in Tor Browser
5. Chat is end-to-end encrypted and hosted from your machine

✅ No login, no metadata, no logging — perfect for whistleblowers, activists, journalists.

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🌐 D. Host Anonymous Websites

1. Go to the Website tab
2. Add your HTML/CSS files (e.g., simple site or blog)
3. Start server
4. Share the .onion link
5. People can visit your site anonymously using Tor Browser

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🧠 Advanced Features

• Stop sharing automatically after 1 view (for file links)
• Configure persistent Onion addresses (for advanced users)
• Use Bridges or custom Tor configs in restricted countries

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🔐 Security & Privacy Tips

Tip	Reason
Always use Tor Browser to test	Standard browsers cannot access .onion
Don’t share links on public forums	Anyone with the link can access the file/chat
Disable auto-quit only if needed	Auto-close ensures minimal trace
Use in combination with Tails OS	For maximum anonymity

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🔧 Troubleshooting

Problem	Solution
Tor not starting	Make sure no firewall is blocking Tor ports
File not uploading/downloading	Keep OnionShare open during file transfer
Recipient can’t access link	Ensure they are using Tor Browser
Slow transfer speeds	Normal for Tor; try smaller file sizes

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🤔 OnionShare vs Alternatives

Tool	Peer-to-peer	Uses Tor	Requires Account	Anonymous Chat	File Size Limit
OnionShare	✅	✅	❌	✅	No hard limit
Firefox Send (defunct)	❌	❌	❌	❌	Yes
WeTransfer	❌	❌	❌ (email needed)	❌	✅
Dropbox	❌	❌	✅	❌	Depends on plan

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📌 Summary

Feature	OnionShare Description
Type	Anonymous file sharing & chat tool
Network	Runs over Tor
Account Needed?	❌ No account or login required
Supported OS	Windows, macOS, Linux
.onion Access Required	✅ Yes, via Tor Browser
Privacy Level	Extremely high

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🔗 Official Resources

• Download: https://onionshare.org
• Source Code: GitHub – onionshare/onionshare

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