What is the Tools69 JSON Viewer & Editor?

The Tools69 JSON Viewer & Editor is a free browser-based tool that lets you open, edit, format, and validate JSON files directly in your browser. It offers a raw editor, a pretty-printed view, and an interactive tree view for navigating nested objects and arrays.

How do I use the JSON Viewer & Editor?

Upload a JSON file or start editing the sample JSON provided. The tool displays a split-pane layout with a raw editor on the left and a preview on the right. You can switch between Pretty and Tree views, edit your JSON, and download the updated file.

Are my JSON files uploaded to your servers?

No. All processing happens locally in your browser. Your JSON data stays on your device and is never uploaded or stored on our servers.

Is the JSON Viewer free?

Yes. The tool is completely free and does not require registration or software installation.

JSON (JavaScript Object Notation) is a lightweight data format commonly used for APIs, configuration files, and data exchange between applications.

Is there a file size limit?

There is no fixed file size limit. Since all processing happens directly in your browser, the maximum file size depends on your device's available memory and browser capabilities. Most modern devices handle large files without any issues.

JSON Viewer

Free online JSON viewer to view, format, and validate JSON files instantly.

Drag & drop your file here, or

🔒 Your files never leave your device and are never uploaded to our servers.

Frequently Asked Questions

JSON Viewer

Frequently Asked Questions

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Frequently Asked Questions

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Frequently Asked Questions

What is the Tools69 JSON Viewer & Editor?

How do I use the JSON Viewer & Editor?

Are my JSON files uploaded to your servers?

Is the JSON Viewer free?

What is a JSON file?

Is there a file size limit?

Related Tools

Spreadsheet Tools

Developer Tools

Document Viewers

Images & Media

JSON Viewer

Frequently Asked Questions

What is the Tools69 JSON Viewer & Editor?

How do I use the JSON Viewer & Editor?

Are my JSON files uploaded to your servers?

Is the JSON Viewer free?

What is a JSON file?

Is there a file size limit?

Related Tools

Spreadsheet Tools

Developer Tools

Document Viewers

Images & Media