Validate JSON instantly
This free JSON validator checks syntax first so you can catch mistakes before formatting, copying, or sharing data.
Beautify JSON instantly
Once JSON is valid, the tool converts compact or minified content into readable, indented output that is easier to inspect, debug, and share.
JSON validator guide
How to use the JSON Validator & Formatter
Use this online JSON validator and formatter when API responses, configuration files, logs, or copied JSON snippets are too compact to read comfortably.
Add JSON
Paste JSON into the input box, type directly, or upload a .json or .txt file.
Validate and format
The tool validates your JSON first and formats valid content with clean indentation.
Copy output
Copy the beautified JSON output or reset the page to format another JSON sample.
FAQs
JSON Validator & Formatter FAQs
What does this JSON Validator & Formatter do?
It validates JSON and formats valid JSON with readable indentation so objects and arrays are easier to inspect.
Can I upload a JSON file?
Yes. Upload a .json or .txt file and the tool will load the content into the input area for formatting.
Is this JSON beautifier free?
Yes. Vivora Tools provides this JSON validator and formatter for free with no account required.
Do you store my JSON data?
No. JSON formatting runs in your browser, and Vivora Tools does not store your pasted or uploaded JSON data.