JSON Formatter & Validator

Pretty-print, minify and validate JSON, with the exact position of any error.

POST /api/v1/json-format

API version: v1
Output schema: 1

The endpoint path is always /v1. The schema number below tracks this tool's output shape and changes independently.

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Parameters

Parameter	Type	Required	Default
input	text	yes	—
mode	pretty \| minify	no	pretty
indent	number	no	2

Request

curl -X POST https://sinikoding.dev/api/v1/json-format \
  -H 'content-type: application/json' \
  -H 'x-api-key: tk_live_…' \
  -d '{"input":"…","mode":"pretty","indent":2}'

Returns

"output": { "kind": "text", "value": "…" }

Try it

inputmodeindent

Calls a same-origin sandbox endpoint, not /api/v1. No key needed, capped at 15 requests a minute.

Request

curl -X POST https://sinikoding.dev/api/v1/json-format \
  -H 'content-type: application/json' \
  -H 'x-api-key: tk_live_…' \
  -d '{"input":"","mode":"pretty","indent":"2"}'

Response

Send a request to see the response.

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