Error location
Invalid JSON shows the line and column, not only a generic message.
Tools
JSON Formatter
Format or minify JSON locally, with validation, error location, and indent options.
Format
Tool Features
Common cleanup
JS comments, trailing commas, and a BOM are cleaned before parsing.
Indent and sort
Choose 2 spaces, 4 spaces, or a tab, and optionally sort keys.
About JSON Formatter Tool
JSON Formatter Tool is a free and easy-to-use tool that allows you to format and minify JSON safely and quickly.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data format used for data exchange. It is widely used in APIs, databases, and applications.
Formatting:
Formatting JSON means adding spaces and lines to make it readable and easy to understand. This is useful for debugging and review.
Minifying:
Minifying JSON means removing all unnecessary spaces and lines to reduce file size. This is useful for improving performance.
Validation:
Validating JSON means ensuring that JSON is correct in terms of structure and rules. Invalid JSON will show an error.
Use Cases
- Developers — Format JSON from APIs or databases for easy reading and debugging.
- Web Developers — Minify JSON to reduce file size and improve application performance.
- Application Developers — Validate JSON before using it in applications or APIs.
- Software Testers — Test and analyze JSON in API or application testing.
- System Administrators — Format JSON from configuration files or logs for easy reading.
- Security Developers — Analyze JSON in security testing or data inspection.
Frequently Asked Questions
Is the tool free?
Yes, the tool is completely free and requires no registration or subscription.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data format used for data exchange between applications.
What is the difference between formatting and minifying?
Formatting makes JSON readable by adding spaces and lines. Minifying removes spaces and lines to reduce size.
Can I format invalid JSON?
The tool first cleans comments and trailing commas. If it is still invalid, you get the line and column.
Is JSON saved?
No, not at all. All formatting and minifying is done locally in your browser and no data is sent or saved on the server.
Can I use minified JSON in production?
Yes, minified JSON is completely safe for use in production. It helps reduce file size and improve performance.
What JSON sizes are supported?
The tool supports JSON of any size. However, for very large files (more than 10MB), formatting may take longer.
Have an idea for a new tool?
If a tool would make your daily work easier, share the idea and I’ll look into adding it.