JFPJSON Format Plus

JSON Formatter and Validator

Clean up API responses, configuration files, webhook payloads, and copied logs. The formatter parses input locally, reports syntax errors, and produces readable or compact JSON.

JSON online parser, formatter, and validator

Parse JSON instantly, format or minify it, and keep everything in the browser.

LocalWaitingIn lines 0In chars 0Out lines 0Out chars 0
JSON input0 lines
Output0 lines
1Waiting for input.
Waiting for input.

Parse summary

Root
-
Keys
-
Depth
-
Size
-

Type counts

strings -numbers -booleans -nulls -objects -arrays -

Structure preview

No valid JSON preview.

Data handling notes

  • Formatting and validation run entirely in the browser.
  • Standard JSON rules apply: comments, trailing commas, and unquoted keys are invalid.
  • Readable output uses two-space indentation; compact output removes unnecessary whitespace.

FAQ

Does it support JSON with comments?No. It follows the JSON standard and reports comments or trailing commas as errors.
Is pasted JSON uploaded?No. Parsing and formatting happen in your browser.