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JSON Formatter & Validator — Free Online

Beautify, Validate, and Minify JSON Instantly

⚡ Done in seconds🔒 Encrypted HTTPS connection🆓 Free, no account needed

Guide

About JSON Formatter

Format messy JSON into readable code with proper indentation. Validate JSON and get clear error messages for invalid syntax. Minify JSON to reduce size.

How to Use JSON Formatter

1

Paste your JSON in the input box

2

Click Format to beautify or Minify to compress

3

See validation status and any errors

4

Copy formatted JSON

Frequently Asked Questions

Paste your JSON and click Validate. If there are errors, we show the exact line and character where the error occurs.
Yes! Click Minify to remove all whitespace and get the smallest possible JSON string.
There is no fixed limit. Your JSON is sent to our server to be formatted, so very large inputs simply take longer.
No — it shows the exact line and column of the error, along with that line of your JSON, so you can fix it yourself.

Learn More

dev
Best Free Developer Tools Online — JSON, Base64, UUID & More
6 min read
dev
Why Is My JSON Invalid? Common JSON Errors Explained (and How to Fix Them)
5 min read

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