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FILESLOCK.COM
Secure Your Files 100% Private Runs in Browser

Encrypt Your Files & Documents 100% Locally

Encrypt with AES-256 before uploading anywhere, entirely in your browser.

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Drop files to encrypt

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Security

Encryption Key

Industry-Standard Security

Your files are secured with AES-256, the same standard used by banks and governments. 100% private, nothing leaves your device.

🔒 100% Local encryption

Your Files Never Leave Your Computer

FilesLock runs 100% locally in your browser using WebAssembly and the Web Crypto API. Unlike cloud-based encryption services that upload your files to remote servers, everything happens on your device.

We cannot see your files. We cannot see your passwords. We cannot decrypt your data. This is not a privacy policy promise, it is a technical guarantee. Your data physically never reaches our servers because there are no servers to reach.

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Server Uploads
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Data Collected
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Client-Side

💻 100% Local Execution

FilesLock runs entirely in your browser using WebAssembly. Your files never leave your computer, ensuring absolute privacy. Zero uploads, zero server logs.

🔒 Bank-Grade Security

Your files are locked with AES-256 encryption. This is the same standard used by governments and financial institutions to protect classified data.

⚡ Instant Speed

Encryption happens directly in your browser. Because there is no upload, it is blazing fast even for massive files.

💾 Unlimited File Size

Because we process files locally, you can encrypt massive videos or archives without any restrictions or server timeouts.

How to Encrypt Files Online Securely

  1. Select your file

    Drag and drop any document, image, or video into the secure zone.

  2. Set a password

    Choose a strong password. This key is the only way to unlock your data. We do not store it!

  3. Download & Share

    Your file is instantly encrypted and ready for safe storage or sharing.

Frequently Asked Questions

Is my data safe with FilesLock?

Absolutely. We use a Zero-Knowledge architecture. Your files are encrypted on your device before they ever touch the internet (in fact, they don't even need internet to work!). We never see your files or your passwords.

What if I forget my password?

Your data will be lost forever. Because we do not store your password, we cannot recover it for you. This is a security feature, not a bug.

Can I encrypt multiple files at once?

Yes! Our innovative batch processing allows you to secure hundreds of photos or documents in seconds.

Which file types are supported?

Everything. PDF, MP4, JPG, DOCX, ZIP... FilesLock handles raw binary data, so it works with any file format.

Is it free to use?

Yes, FilesLock is free for personal use. We believe privacy is a fundamental right. We do not sell your data (we can't see it!) and we do not run intrusive ads.

How do I decrypt my files?

Simply drag your .enc file back into the drop zone, enter the password you used to encrypt it, and click "Decrypt". The original file will be restored instantly.

Does it work on mobile?

Yes! FilesLock works on any modern browser, including Chrome and Safari on iOS and Android. You can encrypt photos and videos directly from your phone.

Secure File Encryption Made Simple

What is Client-Side Encryption?

Client-side encryption means your files are encrypted directly on your device before any data transmission occurs. Unlike traditional cloud encryption services that receive your files in plain text and encrypt them on their servers, FilesLock performs all cryptographic operations in your browser using JavaScript and the Web Crypto API.

This approach ensures that even if someone intercepts your network traffic or compromises the FilesLock website, they cannot access your unencrypted files because the encryption happens entirely on your machine.

Why Choose AES-256 Encryption?

AES-256 (Advanced Encryption Standard with 256-bit keys) is the encryption standard trusted by governments, militaries, and financial institutions worldwide. It has been extensively analyzed by cryptographers and remains unbroken despite decades of scrutiny.

With 2^256 possible keys (that's 115 quattuorvigintillion combinations), even the most powerful supercomputers would require billions of years to crack a single AES-256 encrypted file through brute force. This makes it the gold standard for protecting sensitive documents, photos, videos, and archives.

Common File Encryption Use Cases

  • Medical Records: Encrypt patient data and health documents before storing them in cloud services like Google Drive or Dropbox.
  • Financial Documents: Protect tax returns, bank statements, and investment portfolios from unauthorized access.
  • Legal Files: Secure contracts, NDAs, and confidential legal correspondence before email transmission.
  • Personal Photos & Videos: Keep intimate moments private by encrypting media before cloud backup.
  • Business Data: Protect intellectual property, source code, and proprietary documents from corporate espionage.
  • Backup Archives: Encrypt ZIP files containing sensitive data before uploading to external storage.

How FilesLock Protects Your Privacy

Traditional encryption services require you to upload your files to their servers, creating a window of vulnerability. Even if they promise encryption, you must trust that they don't keep copies, don't have backdoors, and won't be compelled by governments to hand over your data.

FilesLock eliminates this trust requirement entirely. Your files never leave your computer. The encryption happens in your browser's memory, the encrypted file is saved to your device, and the original data is immediately discarded. We have no servers to hack, no databases to breach, and no logs to subpoena. Your privacy is guaranteed by architecture, not policy.