JSON Viewer

Paste, drag-drop, or load JSON from a URL. See it formatted as a collapsible tree with syntax highlighting and click-to-copy JSONPath for every value. We never see your data — parsing and formatting run entirely in your browser.

Open the viewer

What you can do with it

  • • Format or minify JSON in one click, with sorted keys optional
  • • Drag-drop .json, .ndjson, or .jsonl files directly onto the page
  • • Load JSON straight from a URL with the ?url= query param — handy for sharing a live API response
  • • Browse deeply nested objects and arrays in a virtualized tree view with type badges (string, number, boolean, null, array, object)
  • • Click any node to copy its JSONPath, so you can reference the exact location in code or a bug report
  • • Search across keys and values to jump straight to the data you need

Example: inspecting an API response

Paste a response like the one below and the viewer renders it as an expandable tree instead of a wall of text — useful when debugging an API that returns deeply nested objects.

{
  "user": {
    "id": 482,
    "name": "Ada Lovelace",
    "roles": ["admin", "editor"],
    "meta": { "lastLogin": "2026-07-01T09:12:00Z", "verified": true }
  }
}

Click on meta.lastLogin in the tree and its JSONPath is copied to your clipboard automatically — no manual counting of brackets.

Working with bigger or line-delimited files?

This page is tuned for everyday JSON payloads. If your file is in the hundreds of megabytes, the Large JSON Viewer streams and virtualizes the tree so your tab doesn't lock up. If your file is one JSON object per line — logs, exports, LLM training data — the NDJSON Viewer paginates by line instead. Got broken JSON from an API or an LLM? Try JSON Repair first.

FAQ

Is this JSON viewer free?

Yes, it's free with no sign-up. It runs entirely client-side in your browser.

Does my JSON get uploaded anywhere?

No. We never see your data — parsing, formatting, and search all happen locally in your browser tab. The only exception is if you explicitly load JSON from a URL, in which case your browser fetches it directly from that source.

What file sizes are supported?

This viewer handles typical API responses and config files comfortably. For files up to 500MB, use the Large JSON Viewer, which streams and virtualizes rendering.

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