JSON Formatter and Validator
Paste JSON and get it beautifully formatted, or squeezed into one line. If it is invalid, see the exact line and column of the problem, and try auto-fix.
How to use JSON Formatter and Validator
- Paste your JSON.
- See it formatted, or switch to Minify.
- If it is invalid, read the highlighted line or press Try auto-fix.
Format, minify and sort
Choose 2 spaces, 4 spaces or tabs to make JSON easy to read. Minify removes every space to make API payloads small. Sort keys A–Z to compare two JSON files.
Find errors quickly
The validator points to the line and column of the first error. Auto-fix repairs trailing commas, comments, single quotes, unquoted keys and Python True, False and None.
Private by design
JSON is parsed in your browser. API keys and customer data are never sent anywhere.
Frequently asked questions
How do I format JSON online?
Paste the JSON and the formatted result appears at once. Copy it or download the .json file.
JSON validate kaise kare?
JSON paste karein. Valid hai to green message dikhega, warna error ki line aur column dikhegi.
What does auto-fix repair?
Trailing commas, comments, single quotes, unquoted keys and Python values.
Is my JSON uploaded?
No. Everything happens in your browser.
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