Is my text sent to any server?

No. Encryption and decryption happen entirely in your browser with the Web Crypto API. Your text and password never leave your device.

What happens if I forget the password?

AES-256-GCM data cannot be recovered without the password — there is no backdoor. Store your password safely or use the Caesar mode for reversible quick obfuscation.

Which Caesar shift works for Chinese text?

The Caesar mode shifts only A-Z and a-z letters; Chinese characters pass through unchanged. Use AES mode to fully encrypt any text including Chinese.

Back to Ercc

文本加密解密

用 AES-256-GCM 或经典凯撒密码加密文本。 100% 在浏览器中完成，不上传任何内容。

Format & Beautify Validate Syntax Minify No Data Uploaded

Input

Output

Password

AES-256-GCM with PBKDF2 key derivation. The password never leaves your browser — losing it means the data cannot be recovered.

How It Works

Paste or Load JSON

Paste JSON text, use the Paste button, or load a .json file from your device.

Format or Minify

Click Format to beautify with proper indentation, or Minify to compress it.

Copy & Use

Copy the result to clipboard. If JSON is invalid, you'll see the exact error location.

为什么使用 Ercc 文本加密解密？

Format & validate

Pretty-print with adjustable indentation, or minify for production. Instant error detection.

No data leaves your browser

Safe for API keys, tokens, and config files. Nothing is uploaded.

Copy with one click

Copy formatted or minified output to clipboard instantly.

Frequently Asked Questions

Is my JSON data sent to any server?

No. All formatting, validation, and minification happens entirely in your browser. Your data never leaves your device.

What JSON size can it handle?

There is no size limit. It can handle megabytes of JSON data instantly, limited only by your browser's memory.

Does it show error locations?

Yes. If your JSON has syntax errors, the error message will describe exactly what went wrong and where.