Encryption, Decryption, & Time Capsules Made Simple

Encrypter.site is the easiest way to secure your digital life. Our web-based platform allows you to encrypt files and text efficiently, or seal messages into a Time Capsule that can only be opened in the future.

Powered by modern cryptographic standards, everything runs directly on your device to guarantee zero-knowledge privacy. Whether you are looking for a secure way to transfer data or a unique way to send message to the future, Encrypter.site provides the robust tools you need without any complicated setup.

How to Encrypt and Decrypt Your Data

Using Encrypter.site is intuitive, even if you’ve never worked with encryption tools before. Here’s how to get started:

Text Encryption & Decryption

1. Enter your message – Type or paste the text you want to secure. It could be a password, a private note, or sensitive data.
2. Set a password – Choose a strong password. This is the only key to unlock your data, so remember it well.
3. Encrypt & Share – Click "Encrypt" to generate a secure string. Share it via a copy-paste link or a QR code.
4. Decrypt – To read it, switch to the "Decrypt" tab, paste the encrypted text, and enter the original password.

File Encryption & Decryption

Encrypter.site also supports file encryption for documents up to 256MB:

1. Select your file – Upload any file (up to 256MB). Everything happens centrally in your browser; files are never uploaded to a server.
2. Lock it down – Enter a password to encrypt both the file content and its filename.
3. Download – Get your protected .enc file instantly.
4. Restore – When you need the file back, simply upload the .enc file in the "Decrypt" tab and enter your password.

All file encryption and decryption operations happen entirely in your browser. Your files never leave your device.

Time Capsule

1. Write for the future – Enter a message you want to keep hidden until a specific time.
2. Set the timer – Choose an unlock time, from 1 minute up to 10 years in the future.
3. Seal it – Generate and download a time-locked .capsule file. No password is needed—cryptographic time-locking ensures it cannot be opened early.
4. Open later – When the time comes, upload the .capsule file in the Time Capsule "Open" tab to reveal the message (a countdown will show if it’s too early).

Frequently Asked Questions

What type of encryption does this tool use?

Encrypter.site uses AES-256-GCM encryption, one of the most secure and widely trusted encryption standards available today. Combined with PBKDF2 for key derivation, this ensures your encrypted data is protected against brute-force attacks. The tool applies modern end-to-end encryption principles, meaning only you and the person with the password can access the original content.

How does the Time Capsule protect my data and where is it saved?

• How it works: We use the drand beacon to encrypt your data so it can only be unlocked after a specific future timestamp. No password is required.
• Where it’s stored: Nowhere. The time capsule is generated entirely in your browser and downloaded as a .capsule file (it may include attachments). We do not store it; you must keep the file safe. If you lose it, you lose access to your message.
• Security: It is mathematically impossible to decrypt the message before the set time. After that time, anyone holding the .capsule file can open it.

Is my data safe? Does anything get uploaded to a server?

Yes, your data is completely safe. All encryption and decryption operations happen locally in your browser using the Web Crypto API—your text, files, and passwords are never uploaded to our servers or any third party. While we use Google Analytics to collect anonymous traffic statistics to helps us understand how the site is used and improve the experience, the actual content you process with the tool remains entirely on your device.

Can I encrypt files as well as text?

Yes. The tool supports both text encryption and file encryption. You can encrypt documents, images, PDFs, or any file type up to 256MB. The file encryption feature also encrypts the filename itself, adding an extra layer of privacy.

What happens if I forget my password?

There is no password recovery option. Encryption works by mathematically transforming your data using your password as the key. Without the correct password, decryption is impossible—not even we can recover it. Always store your password safely.

Can I decrypt on a different device?

Absolutely. Encrypted content created on one device can be decrypted on any other device using Encrypter.site. Just paste the encrypted text or upload the encrypted file, enter the original password, and decryption will work seamlessly across browsers and operating systems.

Is this tool suitable for highly sensitive data?

For everyday data encryption needs—sharing Wi-Fi passwords, sending private messages, protecting notes—the tool provides excellent security. However, for enterprise-level secrets, cryptocurrency keys, or data requiring audited security compliance, consider specialized solutions alongside this tool.

Is the service free?

Yes. Encrypter.site is completely free with no accounts, subscriptions, or hidden limits. You can encrypt and decrypt as much text and as many files as you need.

Does the QR code contain my password?

No. QR codes only contain the encrypted text, never your password. To decrypt the message, the recipient must manually enter the correct password. This design ensures your password is never exposed in the shared QR code.

Security & privacy disclaimer

This online text encrypter is a general-purpose tool for small pieces of text. All encryption and decryption happen locally in your browser using modern client-side cryptography. Your text, password, and encrypted data are not uploaded to our servers.

That said, this tool is not a replacement for audited end-to-end encrypted messaging apps, password managers, or hardware wallets. Avoid using it as your only protection for highly sensitive, long-term secrets such as bank logins, cryptocurrency seed phrases, or full database backups.

Use Encrypter.site for short messages, notes, experiments, and educational purposes — and always keep your password safe.