JSON Formatter
Make JSON readable, check it for errors, or minify it.
- 100% free
- Shows error line and column
- Nothing is uploaded
Last reviewed by the OnlineToolPro team
0 characters
Format
What is the JSON Formatter?
Paste JSON to format it with clean indentation, check that it's valid (errors show the line and column), sort keys alphabetically or minify it to one line.
How it works
How to use the JSON Formatter
3 simple steps. No experience needed.
What can you use it for?
- Read an API response that arrived as one long line.
- Find the exact spot where a JSON file is broken.
- Minify JSON before embedding it.
FAQ
Frequently asked questions
Is it safe to paste private data?
Yes. The JSON is parsed in your browser and never sent anywhere.
Does it accept comments or trailing commas?
No — those aren't valid JSON, so the tool points them out.
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