About this tool
JSON Validator is part of our Developer Tools collection. It is designed for a clear, fast workflow with practical options, useful output, and privacy-aware processing.
JSON Validator
Validate JSON and locate syntax errors.
✓Your files are processed in your browser — nothing is uploaded to our servers.
Privacy-first processing
Your files are processed in your browser — nothing is uploaded to our servers.
Frequently asked questions
Can I use JSON Validator for free?
Yes. You can use the core JSON Validator workflow for free.
How are my files handled?
Your files are processed entirely in your browser. File contents are never uploaded to our server.