About the JSON Validator
The JSON Validator is a free online tool that lets you validate JSON and pinpoint syntax errors instantly. With it you can format, encode, validate and generate code and data instantly, there's nothing to install and no account to create. Just open the tool, do what you need, and you're done.
It's part of the Developer collection on Toolzy, a growing platform of 135+ free, privacy-first tools built for speed and a great experience on every device.
Also known as: lint, json, check, valid.
Why use the JSON Validator?
- Runs locally in your browser
- Handles large inputs quickly
- Copy results with one click
- No rate limits or sign-up
When to use it
- Debugging APIs and payloads
- Cleaning up or formatting data
- Generating test values quickly
How to use the JSON Validator
- Open the JSON Validator. Open the JSON Validator on this page, there is nothing to install and no account needed.
- Add your input. Type or paste your input into the tool.
- Adjust options. Choose any options you need, the JSON Validator updates instantly.
- Get your result. Click the action button to download or copy your result. It is 100% free.