OpenUtility / Data / JSON Formatter
Data tool

Format JSON online

Paste JSON, validate it, and turn compact or messy JSON into readable, indented output.

Open JSON FormatterBrowse all tools
🔒 Designed for browser-based use. Avoid pasting secrets into any online tool unless you understand how that tool handles your data.

Why use this json formatter?

Paste JSON, validate it, and turn compact or messy JSON into readable, indented output. OpenUtility keeps common developer utilities in one fast, focused workspace.

JSON validationPaste JSON, validate it, and turn compact or messy JSON into readable, indented output.
Readable indentationPaste JSON, validate it, and turn compact or messy JSON into readable, indented output.
Runs in your browserPaste JSON, validate it, and turn compact or messy JSON into readable, indented output.

Frequently asked questions

What is JSON Formatter?

Format JSON online. Open the tool to work with your data directly in the browser.

Is my data uploaded?

OpenUtility tools are designed to process supported input in your browser rather than requiring a third-party upload.

Who is this JSON Formatter tool for?

It is intended for developers, students, technical writers, testers, and anyone who needs a quick browser-based developer utility.

Related developer tools

Explore more OpenUtility tools in the same workflow.

JSON MinifierMinify JSON into a compact, production-friendly form.CSV ↔ JSONConvert CSV data to JSON and JSON data back to CSV.XML FormatterFormat and inspect XML with readable indentation.YAML ↔ JSONConvert YAML to JSON and JSON to YAML.