JSON Formatter
Beautify and format JSON with syntax highlighting
How It Works
Select Your File
Upload, drag & drop, or paste directly from clipboard.
Configure Options
Set quality level and output format.
Download Result
Processed entirely in your browser. Download instantly.
About JSON Formatter
Paste raw or minified JSON and instantly get a beautifully formatted, syntax-highlighted output with configurable indentation (2 spaces, 4 spaces, or tab). The formatter validates the JSON as it formats and highlights any syntax errors with line numbers. Collapsible tree-view navigation lets you explore deeply nested objects. Copy the formatted output with one click. Runs entirely in your browser –no data is sent to a server. Ideal for developers debugging API responses, reading configuration files, or preparing JSON for documentation. Handles large JSON payloads efficiently using streaming tokenisation.
Frequently Asked Questions
Can I collapse and expand nested objects?
Yes. The tree view allows you to collapse any object or array to reduce visual noise.
What indentation options are available?
Choose 2 spaces, 4 spaces, or a tab character for indentation.
Is my JSON data kept private?
Yes. All formatting happens in your browser –no data is ever sent to a server.