JSON formatter

Paste JSON (starting with { or [). You get pretty-printed, colour-highlighted output. Enter copies exactly what is shown.

Options

• Pretty / Minified.
• Indent: 2 spaces, 4 spaces or tabs.
• Sort keys.
• Stats: type, depth and size.

It is forgiving

• Comments, trailing commas, single quotes and unquoted keys are accepted. The badge then says “relaxed JSON → fixed”.
• JSON that has been encoded as a string ("{\"a\":1}") is unwrapped automatically.
• Errors show the line and column with a caret under the problem.

Short text like [wip] fix is not treated as JSON: the error view only appears when the input is clearly meant to be JSON.

Next to CSV

An → CSV button turns an array of objects into a table: see CSV ⇄ JSON. Copied JSON up to 20 KB is kept in Recent.