Security tool

Encrypt / Decrypt Text

Protect any text with a password using AES-256-GCM. Everything runs in your browser — your text and password never reach our servers.

100% client-side AES-256-GCM No signup

How it works & security

  • AES-256-GCM authenticated encryption — protects both confidentiality and integrity (tampering is detected on decrypt).
  • Your key is derived from the password with PBKDF2-SHA-256, 250,000 iterations, using a fresh random salt. A random 96-bit IV is generated for every encryption.
  • The output is Base64 containing salt + IV + ciphertext. Keep your password safe — without it the text cannot be recovered.
  • All cryptography runs locally via the browser's audited Web Crypto API. Nothing is uploaded, logged, or stored.

How to Use Encrypt / Decrypt Text

Encrypt and decrypt text with a password using AES-256-GCM. 100% client-side — your text and password never leave your browser.

1
Enter or paste your data

Type directly into the input field, paste from your clipboard, or upload a file. The tool accepts a wide range of inputs and handles edge cases automatically.

2
Process instantly

Click the action button or watch as the tool processes your input in real time. All computation happens locally in your browser - nothing is sent to any server.

3
Copy or download results

Copy the output to your clipboard with one click, or download it as a file. Your data stays private throughout the entire process.

Why Choose PrivConvert?

Unlike other online tools that upload your files to remote servers, store them for days, and may use them for AI training or data mining, PrivConvert was built with privacy as the foundation.

Zero data retention

Files are processed in volatile memory (RAM) and immediately purged. Nothing is ever written to disk or backed up.

Encrypted transfers

All uploads and downloads are encrypted with TLS 1.3. Your files cannot be intercepted in transit.

No account required

Use any tool instantly without signing up, providing an email, or creating a profile. No tracking cookies, no user profiling.

Works on any device

Compatible with Windows, macOS, Linux, iOS, and Android. No plugins or desktop software needed - just a modern web browser.

Trusted by Thousands of Users

PrivConvert processes thousands of file conversions every day. Our commitment to privacy and security has made us the go-to choice for professionals, developers, and privacy-conscious users worldwide.

250 MB Max file size
120+ Conversion tools
0 sec File retention
100% Free to use

Frequently Asked Questions

Is Encrypt / Decrypt Text free to use?

Yes, completely free with no limits, no sign-up, and no hidden fees. Use it as many times as you want.

Is my data safe?

All processing happens directly in your browser. Your data is never sent to any server, never stored, and never shared. It's 100% client-side.

Does it work on mobile devices?

Yes. The tool works on any device with a modern web browser - smartphones, tablets, laptops, and desktops.

Do I need to create an account?

No. You can use the tool instantly without signing up, providing an email, or creating any profile.