Does it tell me where my JSON is broken?

Yes. The status bar shows the line and column of the first error, with the parser's message.

What does "Sort keys" do?

It reorders every object's keys alphabetically before printing — handy for diffing two JSON blobs.

Is my JSON uploaded anywhere?

No. Everything runs in your browser, including the parser.

JSON Formatter & Validator

JSON फर्म्याटर र भ्यालिडेटर

दाइ तयार गर्दैछ… Getting your tool ready

About this tool

JSON Formatter & Validator

Format, validate, and minify JSON with helpful error messages.

Paste JSON to format with configurable indentation, validate against the JSON grammar, or minify it to a single line. Errors are reported with line and column numbers.

Category: Developer Tools
Where it runs: Your browser
Version: v1.0.0
Price: Free · no sign-up

How to use

Step by step

1
Paste your JSON
Any valid JSON works — objects, arrays, strings, numbers, null.
2
Pick Pretty-print, Minify, or Validate
Pretty-print also lets you choose the indent (0, 2, or 4) and sort keys.
3
Copy the result
Use the Copy button on the result panel to grab the output.

Frequently asked

Questions

Yes. The status bar shows the line and column of the first error, with the parser's message.

Related tools

Base64 Encoder & DecoderEncode text to Base64 or decode Base64 back to text. Supports URL-safe variant.UUID GeneratorGenerate v4 UUIDs (random) or v7 UUIDs (time-ordered). Batch up to 100 at a time.URL Encoder & DecoderPercent-encode or decode text for use in URLs. Component vs full URL modes.JWT DecoderDecode a JSON Web Token to inspect its header and payload. Does not verify the signature.QR Code GeneratorGenerate a QR code for a URL, text, Wi-Fi credentials, or contact card. Download as PNG or SVG.Password GeneratorCryptographically-strong random passwords with length & charset options.