What this tool does
JSON Viewer converts objects and arrays into interactive trees. Different text styles are used for strings, numbers, Boolean values, and null; objects and arrays can be expanded or collapsed item by item. User values are written to the page through createElement and textContent and will not be executed as HTML.
- The Raw view displays the formatted JSON.
- Tree view supports single node and all expand/collapse.
- Even if the value contains HTML tags or script characters, it will be displayed as plain text.
How to use it
- Paste the valid JSON.
- Click "Generate View".
- Select the Raw or Tree tab.
- Use node arrows, expand all, or collapse all to navigate large structures.
Common uses
- Read deep interface responses.
- Check the data types of array elements and object fields.
- Safely view JSON containing unknown strings.
JSON Viewer Features
Switch between Raw and collapsible Tree views to clearly differentiate between different JSON types. It is suitable for daily development, debugging, data sorting and code optimization scenarios. The processing results can be directly viewed, copied or downloaded.
FAQ
Will the tree view execute the HTML in the string?
No. All keys and values are rendered as text nodes, without user content splicing innerHTML.
Why do large arrays need to be collapsed by default?
Collapse reduces page height and helps you see the top-level structure first, and you can expand individual nodes or all nodes at any time.
Are Raw and Tree data the same?
Same. Both views come from the same JSON parsing, but are presented in different ways.