JSON Viewer – Interactive Tree View Online
View JSON data in a clean interactive tree with expand/collapse, search, and raw toggle. Our free JSON Viewer makes exploring complex JSON structures effortless.
About JSON Viewer
Raw JSON in text form is hard to navigate, especially with deep nesting and large arrays. A visual tree view with expand and collapse controls makes understanding structure much easier. This JSON Viewer displays your data as an interactive tree with syntax highlighting and search.
How it works
Paste JSON into the Input area and click Load JSON. The tree view shows objects and arrays with expand arrows. Click any parent node to expand or collapse its children. Use the search box to find keys or values instantly.
Switch between Tree View and Raw View using the toggle buttons. Expand All and Collapse All buttons help navigate large structures. Copy and Download buttons let you save the original JSON. Color-coded types make strings, numbers, and booleans easy to distinguish.
When you'd use this
Developers exploring unfamiliar API responses benefit from visual structure overview. Debugging nested configuration files becomes easier when you can collapse sections you are not currently examining.
Very large JSON files with thousands of nodes may cause browser slowdowns when fully expanded. Use the search feature to find specific values without expanding everything. For massive files, consider a desktop JSON editor.
Questions
How do I expand all nodes?
Click the Expand All button above the tree to open every nested level at once.
Can I search within the tree?
Yes. Type in the search box to filter and highlight matching keys and values.
What colors represent what types?
Strings are green, numbers are blue, booleans are purple, and null is gray.
Can I edit values in the tree?
No. The tree view is read-only. Edit the raw JSON in the Input area and reload.
Does it preserve key order?
Yes. Keys are displayed in the order they appear in the original JSON.