How do I format JSON?

Paste JSON above and pick an indent size. Valid input becomes indented text you can copy.

How do I make JSON readable?

Pretty-print it with consistent indentation and line breaks. This formatter does that automatically.

Yes for typical API payloads in the browser. Extremely large files may be slower depending on device memory.

This tool parses first. Invalid JSON shows an error instead of partial output.

Pretty-printed JSON adds indentation and newlines so humans can scan structure without changing the data.

A free online tool that pretty-prints JSON for developers and students.

It parses your text with JSON.parse, then JSON.stringify with a chosen spacing value.

Paste input, select indent, and copy the formatted output panel.

Yes. It is free with no sign-up.

Yes. It works on mobile browsers.

Free JSON Formatter Online, Pretty-Print JSON | Binary Tech