File Encryptor

What is File Encryptor?

File Encryptor is a free, browser-based tool that helps you get the job done quickly. Encrypt any file with a passphrase using AES-GCM 256 — fully offline. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.

Used by

• Security analysts
• Data engineers
• Compliance teams
• Developers

Recommended workflow

1. 1

   Prepare the input

   Use this tool as the focused step in a larger browser-based workflow.

2. 2

   Run File Encryptor

   Review the preview, copy or download the result, and keep everything local in your browser.

3. 3

   Next recommended tool

   File Decryptor: Decrypt .dxf files produced by the File Encryptor.

   Open tool
4. 4

   Then continue with

   AES Encryptor: AES-GCM-256 encryption with PBKDF2 key derivation.

   Open tool
5. 5

   Then continue with

   Secure Notes: Encrypted note storage using AES-GCM in your browser.

   Open tool

Frequently asked questions

How do I use File Encryptor?

Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Encrypt any file with a passphrase using AES-GCM 256 — fully offline.

Is my data uploaded or stored anywhere?

No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.

Is File Encryptor free?

Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.

What's the maximum file size?

There's no hard limit imposed by the tool. Because processing happens in your browser, the practical ceiling is your device's available memory — most everyday files work instantly.

Do I need to install anything?

No installs and no extensions — it runs entirely in your web browser and even works offline once the page has loaded.