Paste any JSON and explore it as a clean, collapsible tree — expand objects, arrays and nested values, with copy and download.

Is JSON Viewer free to use?

Yes — JSON Viewer is free to use, with no sign-up, no install and no account.

Does JSON Viewer upload or store my data?

No — JSON Viewer runs entirely in your browser, so your text, files and results never leave your device.

No — it works in any modern browser (Chrome, Edge, Firefox, Safari) with no downloads, accounts or plugins.

What is JSON Viewer?: Paste any JSON and explore it as a clean, collapsible tree — expand objects, arrays and nested values, with copy and download.
Is JSON Viewer free to use?: Yes — JSON Viewer is free to use, with no sign-up, no install and no account.
Does JSON Viewer upload or store my data?: No — JSON Viewer runs entirely in your browser, so your text, files and results never leave your device.
Do I need to install anything to use JSON Viewer?: No — it works in any modern browser (Chrome, Edge, Firefox, Safari) with no downloads, accounts or plugins.