AES Encryption
100% Client-SideAES Encryption encrypts and decrypts text with a passphrase using AES-256-GCM. It runs entirely in your browser, so your data is processed locally in memory and never uploaded to a server. It is 100% free and needs no signup or account.
- Accepted input:
- TXT, Any
- Output:
- .txt
Example
Private note stored only in this browser session. mode: encrypt passphrase: correct horse battery staple
Encrypts pasted text or an entire file with PBKDF2 + authenticated AES-256-GCM. To encrypt a file, drop it in the file area instead of typing text; decryption auto-detects text vs. file output and restores the original filename.
Input
Output
Ctrl/⌘ + Enter: run · Esc: clear
How to use AES Encryption
- 1
Open AES Encryption
Add your file or enter your input in the AES Encryption workspace above. Drag and drop works, and nothing is uploaded.
- 2
Choose your options
Adjust any settings you need, such as order, quality, size or format. The tool does the rest on your device.
- 3
Process and save
Run AES Encryption and download or copy the result. It happens instantly in your browser, and your data stays private.
In-Browser vs. Server-Based Tools
| Feature | AnyTool Studio (in-browser) | Traditional server-based |
|---|---|---|
| Privacy | Files stay on your device and are never transmitted. | Files are uploaded to and processed on a third-party server. |
| Speed | No upload or download wait; speed depends on your device. | Upload and download time grows with file size and connection speed. |
| File size limits | No imposed limit; bounded by your device's memory. | Commonly capped per file or per task, with higher limits on paid plans. |
| Account required | No signup or login. | Often required for larger files or repeated use. |
| Data retention | Nothing to retain; data is cleared from memory. | Files may be stored for a period before deletion. |
Frequently Asked Questions
No. AES Encryption runs entirely in your browser using JavaScript. Your data is read into your device's memory, processed there, and saved straight to your downloads. Nothing is sent over the network, so no one else ever receives a copy.
AnyTool Studio sets no upload limit because nothing is uploaded. The practical limit is your device's available memory, so very large files may be slow on phones or older computers. If AES Encryption struggles with a big file, try a smaller one.
Yes. Because your data never leaves your device, confidential contracts, financial records and personal files are not exposed to a third-party server. Everything is cleared from memory when you close the tab.
Yes. AES Encryption is 100% free, with no signup, no account and no usage caps.
Related guide
How to Encrypt Text or a File With a Passphrase (AES-256)
Encrypt text or an entire file with a passphrase using authenticated AES-256-GCM, in your browser.
How to Generate an RSA Key Pair
Generate a 2048-bit or 4096-bit RSA public/private key pair for encryption or signing, in your browser.
How to Generate a Strong Password (or Passphrase)
Generate a truly random, strong password or a memorable passphrase, entirely in your browser.