JSON Formatter
Invalid JSON format. Please check your data.
About the JSON Formatter & Validator Tool
The JSON Formatter is an essential tool for developers and data analysts. It takes minified, unreadable JSON strings and pretty-prints them with proper indentation and syntax highlighting, making it easy to read and debug.
How to Use
Paste your raw JSON data into the editor. The tool will automatically parse the data, check for syntax errors, and format it with 2-space or 4-space indentation. If your JSON is invalid, it will highlight the error.
Why Use ToolFlare?
- 100% Client-Side Processing: Your data never leaves your browser. We don't use servers to process your inputs.
- Lightning Fast: Instant results without waiting for network requests.
- Ad-Free & Privacy First: No tracking, no paywalls, and no intrusive advertisements.
Frequently Asked Questions
How does this tool handle large JSON files?
It uses optimized parsing, meaning it can format megabytes of JSON data instantly in your browser without locking up the tab.
Does it automatically fix missing quotes or commas?
No, this tool strictly formats valid JSON. If your data has syntax errors, it will catch them and display the generic error message provided by your browser to help you locate the issue.
Can I change the default indentation?
Currently, the formatter applies a standard 2-space indentation for optimal readability, which is the industry standard for JSON payloads.