JSON Master

Format, validate, and beautify your JSON data instantly. 100% Client-side processing ensuring total privacy.

Input
Output

How to Use

  1. Paste your raw JSON, Base64, or URL encoded data into the input editor.
  2. Click "Format", "Minify", or "Validate" to process your data.
  3. Use the provided tools to encode or decode between various formats.
  4. Copy the clean, processed result to your clipboard with one click.

Frequently Asked Questions

Will it leak my API keys?

No, we do not send your JSON to any server. All processing is 100% local and browser-based.

Can it validate deep nesting?

Yes, our engine handles complex and deeply nested JSON structures with ease.

Does it support Base64?

Yes, we include built-in Base64 and URL encoding/decoding specifically for developers.

Is there a size limit for formatting?

We can handle several megabytes of JSON data without browser hang-ups.

Does it show syntax errors?

Yes, it provides line and character indicators for any JSON syntax violations.