TooldenTOOLDENDEVELOPERON-DEVICE
JSON Formatter
Paste your JSON below and click Format to beautify it. Invalid JSON will show a detailed error. Everything runs in your browser, nothing is uploaded.
HOW TO USE
- 1Paste your JSON into the input area, or click "Load sample" to try it out.
- 2Click Format (or press Ctrl+Enter on Windows / Cmd+Enter on Mac) to beautify it with indentation.
- 3If the JSON is invalid, a detailed error message tells you what went wrong and where.
- 4Use Minify to compress the JSON to a single line, and Clear to start over.
EXAMPLE
INPUT
{"name":"Toolden","version":1,"tags":["free","tools","fast"]}OUTPUT
{
"name": "Toolden",
"version": 1,
"tags": ["free", "tools", "fast"]
}FAQ
What does the JSON formatter do?
It beautifies messy JSON with proper indentation, validates it, and can minify it back to a compact single line for storage or transfer.
Does it check whether my JSON is valid?
Yes. Invalid JSON shows a detailed error message with the reason, instead of silently producing wrong output.
Is my JSON uploaded to a server?
No. Formatting, validation and minifying all run in your browser. Nothing is uploaded anywhere.
What is the difference between Format and Minify?
Format adds indentation and line breaks so the structure is readable. Minify removes all whitespace to make the JSON as small as possible.
Can I format JSON from an API response?
Yes. Copy the raw response body from your browser's network tab or an API client and paste it in.