JSON Validator guide
Open JSON ValidatorCheck JSON syntax without changing your data.
How to use JSON Validator
Check a request body before sending it to an API.
- Select Load example or paste your own test input.
- Choose Validate and review the available options.
- Run the selected action; review any validation message.
- Inspect the output before copying, printing or downloading it.
A small example
{"valid":true} → Valid JSON ✓When the result looks wrong
Syntax validation does not check your API schema or business rules.
Questions about JSON Validator
Is my input uploaded?
File and text processing runs in your browser. Opening the website still loads application assets from its host.
What if the result looks wrong?
Syntax validation does not check your API schema or business rules.
Can I use sensitive production data?
Prefer non-sensitive test data. Never paste live access tokens, passwords or confidential documents into a site without assessing its code and environment.