View, validate and syntax-highlight any JSON — instantly pretty-print and explore JSON with colour-coded formatting.
Click the left panel and paste your data (Ctrl+V / Cmd+V), or use the Paste or Sample buttons.
Press the 👁️ View & Format JSON button. The result appears instantly in the right panel.
Any syntax issues in your input are shown in the red error bar with a clear description so you can fix them quickly.
Click Copy to copy to clipboard or Download to save the file locally.
It validates your JSON and renders it with syntax highlighting — colour-coding strings, numbers, booleans, nulls, keys, and brackets for easy reading.
Yes. If your JSON contains any syntax error, the viewer shows a clear error message with the location of the problem.
Yes — paste any minified JSON and the viewer instantly formats it with proper indentation and line breaks.
No. Paste JSON of any size — it all runs locally in your browser without any upload.
Yes. Nothing is sent to any server. All processing happens client-side in your browser.
Strings are green, numbers are blue, booleans and null are orange, object keys are purple, and brackets/braces are grey.
