Using our online JSON viewer is straightforward:
Text View shows your JSON as raw code with syntax highlighting and line numbers. Use this when you need to edit, copy, or check the exact structure of your data.
Tree View displays your JSON as an interactive, collapsible tree. This makes it much easier to navigate large or deeply nested data. You can expand only the parts you care about and quickly find specific values.
Click the "Format" button in the toolbar. This adds indentation (4 spaces) and line breaks to your JSON, making it easy to read. We also offer a dedicated JSON formatter tool if you need more options.
You can also minify your JSON using the "Minify" button in the toolbar.
If your JSON contains syntax errors, you'll see an error message at the top of the page. On Chrome and Firefox, you can click "Locate in editor" to jump directly to the error part in the code editor.
For more detailed validation, try our JSON validator.
Your JSON never leaves your browser. All processing happens locally on your device.
You can load JSON files up to 10MB. This should be more than enough for most use cases. Since all processing happens in your browser for privacy, allowing larger files would slow things down, hence the limit.