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JSON Formatter & Validator

JSON Formatter & Validator

Format, validate & minify JSON data instantly

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Valid JSON
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Top Keys
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Original
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Output
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What is Json Formatter?

Our JSON Formatter lets you instantly beautify, validate, and minify raw JSON data with a single click. It applies proper indentation and syntax highlighting so you can read complex nested structures at a glance. Built-in error detection pinpoints exact line numbers where malformed JSON breaks, saving you hours of manual debugging.

How to Use Json Formatter

  1. 1
    Paste your raw or minified JSON into the input editor on the left.
  2. 2
    Click the Format button to beautify the JSON with proper indentation.
  3. 3
    Review any syntax errors highlighted with their exact line numbers.
  4. 4
    Use the Minify button to compress the JSON into a single compact line.
  5. 5
    Click Copy to clipboard or Download to save the formatted output.

Key Features

One-click beautification with configurable indent size (2, 4, or 8 spaces)
Real-time syntax validation with descriptive error messages and line numbers
Color-coded syntax highlighting for keys, strings, numbers, and booleans
Minify mode that strips all whitespace for production-ready compact JSON
Collapsible tree view to expand and collapse nested objects and arrays
Instant copy to clipboard and downloadable .json file export

Frequently Asked Questions

1. Is my data safe when using Json Formatter?

Yes. Json Formatter processes everything locally in your browser. No data is sent to any server, ensuring complete privacy.

2. Is there an input size limit for Json Formatter?

Json Formatter can handle large inputs. The actual limit depends on your browser memory, but typical use cases work flawlessly.

3. Can I use Json Formatter offline?

You need an internet connection to load the page, but once loaded, Json Formatter processes everything client-side in your browser.

4. Is Json Formatter free to use?

Yes, Json Formatter is 100% free with no registration or hidden charges.

5. Does Json Formatter support syntax highlighting?

Yes! Json Formatter provides syntax highlighting for better readability and debugging of your code or data.

6. Can I copy the output from Json Formatter?

Absolutely. Json Formatter includes a one-click copy button so you can easily copy the processed output to your clipboard.

7. What browsers are compatible with Json Formatter?

Json Formatter works on all modern browsers including Chrome, Firefox, Safari, Edge, and Brave.

8. Do I need to install any extensions or plugins?

No. Json Formatter is a web-based tool that works right in your browser without any installation.

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