Beginner
JSON Formatter / Validator Tutorial
Learn the essentials of formatting, validating, and minifying JSON for API development and debugging.
Get Started
Click below to use JSON Multi-tool Suite
Steps
1
Enter JSON
Paste or type the JSON you want to process in the left editor. The tool auto-detects format.
2
Validate / Format / Minify
Use Validate to check syntax and pinpoint errors. Format prettifies with indentation; Minify removes whitespace for transport.
3
Copy / Download
Copy the output or download it as a file for API testing, configs, or data exchange.
Tips & Tricks
API debugging
Pretty-print responses to quickly spot structural issues.
Large files
Split files >10MB to avoid browser lag when possible.
Privacy
All processing is local in your browser. No uploads.
Common mistakes
Use double quotes for keys/strings; no trailing commas; remove comments.