Code / FREE ONLINE TOOL
JSON Formatter & Validator
Validate JSON, format it with readable indentation, or minify JSON for production. Find syntax errors instantly without uploading your data.
QUICK GUIDE
How to use this tool
Paste JSON and choose Validate, Format, or Minify. Large integer values are preserved exactly.
Your input is processed locally. Use Copy or Download to keep your result.
Keep your workflow moving
Need another step? Try a related tool.