JSON Formatter
Beautify, validate and minify JSON in your browser. Paste your data, choose an indentation style, and get clean, readable output instantly — nothing is uploaded.
Input JSON
0 lines · 0 chars
Indent
How to use JSON Formatter
- 1
Paste your JSON
Paste minified, messy, or already-indented JSON into the input panel.
- 2
Choose indentation
Select 2 spaces, 4 spaces, or tabs to control how the beautified output is indented.
- 3
Format or minify
Click 'Format' to pretty-print and validate the JSON, or 'Minify' to compact it into a single line.
- 4
Copy the result
Use the 'Copy' button to grab the formatted or minified output for your project.
Frequently asked questions
What is the difference between Format and Minify?
Format (beautify) adds line breaks and indentation so the structure is easy to read, while Minify strips all unnecessary whitespace to produce the smallest possible single-line JSON for production payloads.
Does the formatter validate my JSON?
Yes. If the JSON is invalid, it shows an error highlighting where the problem is instead of producing output, so you can quickly locate the missing comma, bracket, or quote.
What indentation options are available?
You can format with 2 spaces, 4 spaces, or tab characters, letting you match your team's or project's coding style.
Does it reorder my keys or change the data?
No. It only re-indents or compacts the existing structure. Key order and all values are preserved exactly as they appear in your input.
Is my JSON uploaded, and can it handle large files?
Nothing is uploaded. The formatter runs entirely in your browser, so it is safe for sensitive data, and it can handle large documents limited only by your device's available memory.
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