Saturday 13 September 2025

OnionShare: Share your files and communicate with each other anonymously and securely

🧅 OnionShare: Share Files Completely Anonymously

The most secure solution for file sharing without tracking and corporate control

OnionShare Interface

🔒 Why is it important? In this day and age, online privacy has become a luxury. OnionShare allows you to share files without leaving a digital footprint, without having to trust any company with your personal data. Every day, billions of files are uploaded to cloud services where they are scanned, analyzed, and stored permanently.

🤔 What is OnionShare?

OnionShare is a free open source application that allows you to share files in the most secure way. Instead of uploading your files to a cloud (like Google Drive, Dropbox, or OneDrive), OnionShare stores them on your computer and creates a special link that only you can share. The app was originally developed for journalists and activists who needed secure communication, but is now used by millions of users worldwide.

💡 In simple words: Imagine that you create a secret online store that only you know the address to. There you "sell" your file and once someone downloads it, the store automatically closes. The difference is that the "store" is on your own computer and no one else has access to it.

🔧 How It Works Technically (Without Complications)

OnionShare uses the Tor Network to create a temporary "hidden service." When you launch a share, the application creates a local web server on your computer and makes it accessible over the Tor network using a unique .onion address. This address is cryptographically secure and can only be used by those who know the exact link. Once the transfer is complete, the server is automatically shut down and the address ceases to exist.

✨ What can you do with OnionShare?

(I.e.Share Files

Send files of any size without restrictions. From photos to 4K videos, entire folders and large work files. There are no limits on the number of files or total size.

🌐Host Websites

Create temporary websites to share information anonymously. You can host HTML files, images, and entire websites without needing a hosting provider.

????Chat Securely

Communicate with others through a built-in chat system without anyone being able to track you. Messages are not stored anywhere permanently.

(I.e.Get Files

Create a secure "box" to receive files from others. Useful for journalists who want to receive anonymous documents from whistleblowers.

🎯 How It Works (No Technical Details)

📋 Simple Steps for Beginners

Download and install OnionShare from the official website onionshare.org. The application is available for Windows, macOS and Linux
Select the files that you want to share either by dragging them into the program or by clicking the "Add files" button
Set security options such as a password, download limit, or operating time limit
Click "Start sharing" and wait for the unique .onion address to be created
Copy the link and send it securely (Signal, encrypted email) to anyone you want
The recipient opens the Tor Browser and pastes the link to download the file or view the content
OnionShare Interface Example
OnionShare interface example - Simple, user-friendly and with clear instructions

⚠️ Important: Both the sender and recipient must have the Tor Browser for OnionShare to work. Tor Browser is free, open source, and can be downloaded from torproject.org. Installation is just as simple as any other browser.

🛡️ Security and Protection Levels

🔐End-to-End Encryption

All data is encrypted end-to-end using modern algorithms. Even if someone monitors the network traffic, they cannot see what is being transferred.

(I.e.Anonymous Contact

The Tor network hides the IP address of both the sender and the recipient. No one can see who is sharing what with whom.

Self-Destruct

You can set automatic deletion after a specific time or number of downloads. The data does not remain accessible forever.

🚫Without Central Servers

There are no intermediate servers storing your data. The transfer is done directly from your computer to the recipient.

⚖️ Advantages & Disadvantages

Advantages

  • Absolute privacy: No one can see what you share, not even internet providers
  • No size limits: Share even files of hundreds of GB
  • Automatic safety: File becomes inaccessible after download or timeout
  • Completely free: No cost, no subscription, no advertising
  • Open source: The code is public and community-controlled
  • Without registration: No account or personal information needed
  • Cross platform: Works on all operating systems

Disadvantages

  • Requires Tor Browser: Does not work with Chrome, Firefox or other common browsers
  • Slowest speed: Transfer is 2-5 times slower than typical cloud services
  • Does not permanently store: You can't sync files like you can on Google Drive
  • Both users need setup: Sender and recipient must have the appropriate programs
  • Not for mobile: There is no official smartphone app.
  • Learning curve: Requires some familiarization for beginners

🆚 Comparison with Other Services

☁️OnionShare vs Google Drive

OnionShare: Complete privacy, no cloud storage, free without limits. Google Drive: Easy to use, sync, but files are analyzed and stored by Google.

(I.e.OnionShare vs WeTransfer

OnionShare: Free without limits, anonymous, secure. WeTransfer: 2GB limit in the free version, stores metadata, easy to use without installation.

🔒OnionShare vs Signal

OnionShare: Suitable for large files, no phone number needed. Signal: Instant communication, easy to use, but 100MB limit for files.

📧OnionShare vs Email

OnionShare: No size limits, complete anonymity. Email: Global acceptance, but limits on attachments and less security.

🤷‍♀️ Frequently Asked Questions

🆓 Is it really free?
Yes, it's 100% free and will remain so. There are no hidden fees, premium versions, or ads. It is developed by the Tor Project and funded by donations and grants.
🧠 Do I need special knowledge?
No! If you can send an email, you can use OnionShare. The interface is designed for simplicity and installation is a one-click process.
🔒 Is it safe?
Yes, it's extremely secure. It uses the same technology that journalists, whistleblowers, and human rights organizations use to protect sensitive information.
📏 Are there any file size limits?
Not from OnionShare! You can share files of any size. The only limits are the available space on your hard drive and your patience for transferring large files.
⚡ Why is it slower?
To protect you, data passes through at least three different servers on the Tor network before reaching the recipient. What you gain in anonymity and security, you lose a little in speed.
🌍 Is it legal everywhere?
Yes, OnionShare is legal in all democratic countries. However, in some countries with authoritarian regimes, using Tor can cause problems. Please check the local laws in your country.
📱 Is there a mobile app?
Not official, but you can use Tor Browser on your mobile to download files shared via OnionShare. To send files you need a computer.

🎯 When to Use OnionShare

(I.e.Business Properties

Send sensitive documents, contracts, financial data or confidential information without risk of leakage. Ideal for lawyers, accountants and consultants who handle personal client data.

🇧🇷Personally

Share personal photos, family videos, or important documents (wills, contracts) without them going through companies that analyze them for advertising purposes.

📰Journalists

Receive anonymous documents from sources, leaks, or whistleblowers without revealing their identity. Many major media outlets use OnionShare to protect their sources.

????Activism

Share information and organize activities in countries with internet restrictions or regimes that monitor citizens' digital communication.

⚠️ Restrictions and what to watch out for

Important Warnings:

  • Does not protect against malware: OnionShare does not scan files for viruses
  • The computer must remain on: Until the transfer is complete
  • Link sharing: If the link falls into the wrong hands, the data is exposed
  • It is not a backup solution: Files are deleted after transfer

💡 Tips for Safe Use

  • Do not share the link publicly. - Only send it to whoever you want via a secure channel (Signal, ProtonMail)
  • Use additional code - OnionShare allows you to add password protection
  • Set a time limit - Expire the link after specific hours or days
  • Check the settings - Choose whether to close after one download or more
  • Notify the recipient - Explain to him that he needs Tor Browser and give instructions
  • Use VPN additionally - For even greater security, combine with a VPN service
  • Check the logs - OnionShare shows you who downloaded the files and when

🛠️ Alternative Options

(I.e.Firefox Send (Discontinued)

Similar solution from Mozilla which was unfortunately discontinued in 2020. OnionShare is the best alternative.

🔐SecureDrop

More complex solution for organizations that want to receive anonymous information. Used by newspapers.

💼Tresorit, pCloud Crypto

Commercial cloud services with end-to-end encryption, but with a monthly cost and less anonymity.

🏠Self-hosted solutions

Nextcloud, Syncthing or other solutions that run on your own server, but require technical knowledge.

Protect your privacy today! Download the free app now and start sharing files with complete security and anonymity!

📥 Free Download OnionShare

📝 Conclusion

OnionShare represents a different philosophy from mainstream cloud services. Instead of trusting your data to large corporations who use it for profit, OnionShare lets you maintain full control. It is the ideal solution for those who want to share files without worrying about their privacy, censorship, or corporate surveillance.

Although it requires a little more effort than regular services, the absolute security and anonymity offers makes it an invaluable tool in the age of digital surveillance. In a world where every click is tracked and every file is analyzed, OnionShare reminds us that Privacy is a right, not a privilege..

🎯 Suitable for: Those who care about their privacy, professionals with sensitive data, journalists, activists, and anyone who wants to share files without trusting them to large companies that use them for their own purposes.

Technology continues to evolve towards more monitoring and control. Tools like OnionShare allow us to we resist this trend and maintain control over our personal data. It is an investment in the future of our digital freedom.


Evangelos
✍️ Evangelos
Its creator LoveForTechnology.net — an independent and trusted source for tech guides, tools, software, and practical solutions. Each article is based on personal testing, evidence-based research, and care for the average user. Here, technology is presented simply and clearly.



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