JSON & Data/JSON Tree Viewer
JSON Tree Viewer
Paste or upload a JSON payload and browse it as a collapsible tree — useful for finding your way around a deeply nested API response. Nothing leaves your browser.
What this does?
Large JSON responses are hard to scan as flat text — you lose track of which closing brace matches which object. This renders the same data as a tree: objects and arrays collapse and expand, so you can fold away the parts you don't need and focus on the branch you're actually debugging.
Each node shows its key and value type. Arrays display their length and objects their property count. Click any node to expand or collapse it, and use the search bar to jump straight to a key name or value anywhere in the tree.
FAQ
Is my data uploaded anywhere?
No. Your JSON is parsed and rendered entirely in your browser. Nothing is sent to a server, logged, or stored beyond your current session.
Is there a size limit?
File uploads are capped at 20 MB. Parsing runs in a background Web Worker so the UI stays responsive even for large payloads.
How is this different from the JSON Formatter?
The Formatter pretty-prints raw text — useful when you need to read or copy the JSON. The Tree Viewer renders an interactive tree — useful when you need to navigate a deeply nested structure without getting lost in brackets.
How is this different from the JSON to Graph Visualizer?
The Tree Viewer is a classic collapsible list, fast to scan and easy to search. The Graph Visualizer renders a spatial node diagram — better for understanding the shape of a document at a glance or for sharing a visual overview with others.
Just need it formatted and validated? Try the JSON Formatter & Validator →