JSON Viewer — Collapsible Tree Explorer
Turn a wall of nested JSON into a navigable tree. Expand and collapse branches to focus on the payload you care about, without editing the source.
Input0 chars · 0 lines
Output
Result will appear here.// Features
- ▸Collapsible nested nodes
- ▸Type-aware coloring for strings, numbers, booleans and null
- ▸Array and object counts at a glance
- ▸Copy any subtree
// How to use
- 01Paste JSON into the input pane.
- 02Click any node in the output to expand or collapse it.
- 03Use the Copy button to grab the entire structure.
// FAQ
Your data never leaves your browser. This tool runs 100% locally — no upload, no logging, no analytics on your inputs.
// Related tools
JSON Formatter
Pretty-print and validate JSON with adjustable indentation. Runs entirely in your browser — nothing is uploaded.
JSON Validator
Validate JSON syntax and get precise line/column error locations. 100% in-browser.
API Response Viewer
Paste a raw API response, pretty-print it, and browse the JSON tree. No live requests.