json-formatdevformatpower

JSON formatter

Prettify and validate JSON/JSONC (comments + trailing commas supported).

JSON Power Tools

Presets, history, and batch runs are enabled (offline, stored locally).

PresetsHistoryBatchWorkers

JSON / JSONC

JSONC (comments, trailing commas)Sort keysIndent

Output

(no output yet)

Explanation

Paste JSON and get a clean, formatted result. If the JSON is invalid, you’ll get a helpful error message.

Use it when you need a fast, offline conversion/validation step during development or debugging.

Example input

{"a":1,"b":[true,false]}

Example output

{
  "a": 1,
  "b": [
    true,
    false
  ]
}

FAQ

Does it change my data?

No—formatting only. Keys/values are preserved.

Why do I see an error?

The input isn’t valid JSON (often trailing commas or unquoted keys).