π JSON Validator & Formatter
Input JSON
π² JSON Tree View
π How to Use
1. Paste JSON: Paste your JSON code in the left input box. Auto-validation runs as you type.
2. Validate & Fix: Syntax errors show exact line/column. Click "Beautify" to format JSON.
3. Browse Structure: The right tree view displays JSON structure. Click arrows to expand/collapse nodes.
β Frequently Asked Questions
Is my data safe when using JSON Validator & Formatter?
Absolutely. Everything runs locally: en/json-lint/index.html and other values are processed on your device, never sent to a server. No data is sent to any server, so there's zero risk of data leaks. Your information stays completely under your control.
Are there any usage limits for JSON Validator & Formatter?
JSON Validator & Formatter has no usage limits β it's free and unlimited. Since processing is done client-side, speed depends on your device. For very large files, we recommend processing in batches for the best experience.
Does JSON Validator & Formatter upload my data to a server?
No. JSON Validator & Formatter uses client-side processing β everything runs in your browser. Your data never leaves your device, and the tool works even without an internet connection.
Is JSON Validator & Formatter free to use?
Yes, JSON Validator & Formatter is completely free to use. No registration or login required β all features are available immediately.
Can I use JSON Validator & Formatter on my phone?
Yes. JSON Validator & Formatter is fully responsive and works on phones, tablets, and desktops. The interface adapts automatically to your screen size.
How large a JSON file can I process?
Since processing is client-side, file size depends on your device memory. Files up to several MB typically process smoothly.