Does formatting change my data?

No. Only whitespace between tokens changes. Parse the document before and after and you get the same value.

Will key order change?

No. Keys are written back in the order they were parsed, so a formatted file still diffs cleanly against its source.

Can I format a large JSON file?

Yes. A few megabytes format in well under a second. The button shows a pending state first, so the tab never looks frozen on large input.

Why does my JSON refuse to format?

Formatting needs valid JSON, so a trailing comma, single-quoted string or unquoted key stops it. The error gives you the position; Repair fixes those three automatically.

Can I change the indent size?

Not from the UI yet. Output is two spaces, which is what most formatters and linters expect.

JSON Kitchen

Format and beautify JSON online

Two-space indentation, key order untouched, undo still works.

Paste JSON

or drag & drop a JSON file

Empty document

UTF-8Lines 0Characters 0

What it does

Formatting re-indents a document so its structure is visible: two spaces per level, one key per line. The result replaces what is in the editor instead of appearing in a read-only pane, so you can keep editing, format again, or undo straight back to the original.

Example

Pasted

{"id":42,"tags":["a","b"],"ok":true}

Formatted

{
  "id": 42,
  "tags": [
    "a",
    "b"
  ],
  "ok": true
}

Highlights

Two-space indentation, keys left in their original order
Document parsed once and rewritten once, only on success
Invalid input is reported with a line, a column and a reason
Ctrl+Z restores the previous shape in a single step
Copy or download the formatted result from the toolbar

Frequently asked questions

Does formatting change my data?: No. Only whitespace between tokens changes. Parse the document before and after and you get the same value.
Will key order change?: No. Keys are written back in the order they were parsed, so a formatted file still diffs cleanly against its source.
Can I format a large JSON file?: Yes. A few megabytes format in well under a second. The button shows a pending state first, so the tab never looks frozen on large input.
Why does my JSON refuse to format?: Formatting needs valid JSON, so a trailing comma, single-quoted string or unquoted key stops it. The error gives you the position; Repair fixes those three automatically.
Can I change the indent size?: Not from the UI yet. Output is two spaces, which is what most formatters and linters expect.

Back to the editor

JSON Kitchen

Format and beautify JSON online

Two-space indentation, key order untouched, undo still works.

Paste JSON

or drag & drop a JSON file

Empty document

UTF-8Lines 0Characters 0

What it does

Example

Pasted

{"id":42,"tags":["a","b"],"ok":true}

Formatted

{
  "id": 42,
  "tags": [
    "a",
    "b"
  ],
  "ok": true
}

Highlights

Two-space indentation, keys left in their original order
Document parsed once and rewritten once, only on success
Invalid input is reported with a line, a column and a reason
Ctrl+Z restores the previous shape in a single step
Copy or download the formatted result from the toolbar

Frequently asked questions

Does formatting change my data?: No. Only whitespace between tokens changes. Parse the document before and after and you get the same value.
Will key order change?: No. Keys are written back in the order they were parsed, so a formatted file still diffs cleanly against its source.
Can I format a large JSON file?: Yes. A few megabytes format in well under a second. The button shows a pending state first, so the tab never looks frozen on large input.
Why does my JSON refuse to format?: Formatting needs valid JSON, so a trailing comma, single-quoted string or unquoted key stops it. The error gives you the position; Repair fixes those three automatically.
Can I change the indent size?: Not from the UI yet. Output is two spaces, which is what most formatters and linters expect.

Back to the editor

Format and beautify JSON online

What it does

Example

Highlights

Frequently asked questions

Related tools

Format and beautify JSON online

What it does

Example

Highlights

Frequently asked questions

Related tools