Validate, format, prettify, and minify JSON data online with syntax error highlighting.
Parse, format, or minify JSON in your browser. Choose indentation, optionally sort keys, and inspect parse errors before copying or downloading the result. The workspace also offers a repair attempt for some common input mistakes.
Step-by-Step Walkthrough
Step 1
Paste JSON into the input panel.
Step 2
Check errors and choose indentation, compact output, or key sorting.
Step 3
Review the parsed result and copy or download the JSON.
Pro Tip for Best Output Quality
Comments and other JavaScript-only syntax are not standard JSON. Large documents may slow the browser.
Key Capabilities & Features
JSON parsing
Report input that the JSON parser cannot read.
Formatting controls
Choose indentation or compact output.
Key sorting
Optionally arrange object keys alphabetically.
JSON download
Copy the output or save a .json file.
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Frequently Asked Questions
Ready to try JSON Formatter?
Open the tool directly inside your browser. Completely free, zero file uploads, and no watermarks on your exports.