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JSON Formatter
Paste messy JSON to get clean, indented output instantly. Everything happens in your browser.
JSON Formatter
Valid JSON · object with 4 keys · 152 chars
{
"name": "pGento",
"tools": [
"json-formatter",
"word-counter"
],
"free": true,
"stats": {
"pages": 10000,
"servers": 0
}
}
Common JSON errors
- Trailing commas after the last item (
[1, 2,]) - Single quotes instead of double quotes around strings and keys
- Unquoted keys (
{name: "x"}) - Comments — standard JSON doesn’t allow them
Private by design
Unlike many online formatters, nothing you paste is sent to a server — safe for tokens, config files and customer data.
Frequently asked questions
Is my JSON uploaded?
No, parsing and formatting run entirely in your browser.
How big a file can it handle?
Several megabytes comfortably; the limit is your device’s memory.