JSON Viewer

JSON Viewer is an interactive tool that renders any valid JSON as a collapsible tree structure with color-coded syntax highlighting. It lets you explore deeply nested data, copy paths and values, and search for specific keys or values without manually scanning raw text.

Click on any object or array node (indicated by { } or [ ]) to toggle it open or closed. You can also use the 'Expand All' button to open the entire tree, or 'Collapse All' to fold everything back to the root level.

Type any keyword into the Search field. The tool will highlight every node whose key name or value contains your search term (case-insensitive). Matching nodes are highlighted with a yellow background so they stand out even in deeply nested structures.

Hover over any node — a chain-link icon will appear on the right. Click it to copy that node's dot-notation path (e.g., user.address.city or items[0].id) to your clipboard. This is useful for referencing data in code, queries, or API calls.

Hover over any node and click the copy icon (clipboard icon) on the right. For primitive values (strings, numbers, booleans, null) it copies the raw value. For objects and arrays it copies the full subtree as formatted JSON.

No. All processing happens entirely in your browser using client-side JavaScript. Your JSON data never leaves your device, so it is safe to paste sensitive or private data.

The viewer supports the full JSON specification: nested objects and arrays of any depth, all primitive types (strings, numbers, booleans, null), Unicode characters, and escaped sequences. Arrays display item counts; objects display key counts.

Yes — copy the raw JSON from your browser's network tab, a REST client, or your terminal and paste it directly into the input area. The viewer instantly renders it as an interactive tree, making even large and deeply nested API responses easy to navigate.

If the input cannot be parsed as valid JSON, an error message is displayed in the tree panel showing the exact parse error (e.g., 'Unexpected token at position X'). Fix the input and the tree will update automatically.

JSON Formatter outputs nicely indented raw text — useful for copy-pasting. JSON Viewer renders JSON as an interactive tree — useful for exploring structure, navigating deep nesting, and finding specific nodes without reading walls of text.

It handles medium-sized JSON well (up to a few MB). Very large files may cause browser slowdown because every node is rendered in the DOM. For huge payloads (tens of MB) consider folding the root level first and expanding only the sections you need.

Yes — click the 'Sample' button to load a pre-built JSON object with nested structures, arrays, and multiple data types so you can immediately explore all the viewer features.