JSON Formatter & Validator
Format messy JSON strings into readable indentation, validate syntax errors, compact with minification, and copy or download .json files.
Your inputs are calculated locally in your browser. No personal data is sent across the network.
Indent:
✓ Valid JSON
/
JSON Editor
31 lines•585 bytes
Total Keys
22
Max Depth
3
Objects
5
Arrays
1
Strings / Numbers
13 / 5
Booleans / Nulls
1 / 0
How to use this tool
1Step 1
Paste your JSON into the editor.
2Step 2
Click Prettify to format or Minify to compact.
3Step 3
Copy or download the output .json file.
Frequently asked questions
Is my JSON data uploaded anywhere?
No, JSON parsing and stringification execute 100% locally in your browser memory.
Related & Connected Tools
Discover more utilitiesdeveloper
Base64 Encoder / Decoder
Encode text and files to Base64 format, or decode Base64 strings to readable text.
Open tool
developer
JWT Token Decoder
Decode and inspect JSON Web Token (JWT) header, payload, and expiration status.
Open tool
developer
Text Diff Checker
Compare two text blocks and highlight line additions, removals, and changes.
Open tool