Explore JSON as an interactive tree — expand, collapse & copy any value

JSON Input
Copy
Tree Explorer
Enter JSON on the left to explore it as a tree…

Click a node to expand/collapse. Hover any value and click the copy icon to copy it. Everything runs in your browser — your data is never uploaded.

🌳 JSON Viewer — Free Online Tool

Explore JSON as an interactive collapsible tree, free. A JSON viewer renders raw JSON (RFC 8259) as an interactive, collapsible tree so you can read deeply nested objects and arrays without counting brackets. This tool parses your JSON in the browser and lets you expand or collapse any node, search by key or value, and copy any value or subtree on hover — entirely on your device, with no upload.

🚀 Why use this JSON Viewer tool?

It turns minified or deeply nested JSON into a navigable tree with search and copy-on-hover, so you can find and grab the value you need in seconds. 100% free, no registration, and complete privacy — everything runs locally in your browser, so your data never touches a server.

Key Features

🌲Collapsible tree

Every object and array becomes an expandable node, so you can drill into nested structures and collapse what you don't need.

🔎Search keys & values

Filter the tree by key or value to jump straight to the data you're looking for in large documents.

📋Copy on hover

Hover any node to copy its value or entire subtree to the clipboard — no manual selecting.

🔒100% private

Your JSON is parsed locally in the browser; nothing is uploaded, logged, or stored.

Popular Use Cases

Debugging APIs

  • Inspect an API response
  • Find a deeply nested field
  • Copy a value or path quickly

Reading config/data

  • Explore package.json / config
  • Understand an unfamiliar payload
  • Review large exports

Dev workflows

  • Verify structure before coding
  • Compare expected vs actual shape
  • Grab a subtree for a fixture

What It Handles

Renders

  • Objects & arrays
  • Deep nesting
  • All JSON value types

Navigate

  • Expand / collapse all
  • Search by key/value
  • Copy node or subtree

Privacy

  • Client-side parsing
  • No network calls
  • Runs offline

Sources & References

Frequently Asked Questions

What does a JSON viewer do?

It parses raw JSON and displays it as an interactive tree of expandable nodes, instead of a flat block of text. That makes deeply nested objects and arrays far easier to read, search, and copy from than scrolling through minified JSON.

Can it handle large or deeply nested JSON?

Yes. Because parsing runs locally, there's no upload limit beyond your device's memory, and collapse/expand plus search let you navigate large, deeply nested documents without losing your place.

Is this a viewer or an editor?

It's a read-and-explore viewer focused on navigating, searching, and copying. For reformatting use the JSON Formatter; for validation use the JSON validator.

Is my JSON uploaded anywhere?

No. The JSON is parsed entirely in your browser — nothing is sent to a server, so it's safe for sensitive payloads.

Why does my JSON fail to load?

The viewer needs valid JSON. Common issues are trailing commas, single quotes instead of double quotes, or unquoted keys — format or validate the JSON first, then view it.

🎓 Pro Tips

  • Tip 1: Use search to jump to a key in a huge response instead of scrolling — then copy the value or subtree on hover.
  • Tip 2: If the document won't load, run it through the JSON Formatter/validator first; viewers need strictly valid JSON.
  • Tip 3: Collapse top-level nodes first, then expand only the branch you care about, to keep big payloads readable.