100% Local Your data is never stored on any server. 100% browser-based, zero tracking.
JSONXX

JSON Viewer Online Read, Browse & Analyze — Paste JSON and explore its structure with an interactive tree view.

Open in Editor
JSON Viewer Browse, expand, and analyze your JSON data structure with an interactive tree view and syntax highlighting. This is a read-only viewer — for editing, beautifying, or exporting, use JSON Editor. 100% browser-based — no upload. Tree View Syntax Highlighting Expand/Collapse Free
Drag & drop a .json file here
or paste JSON / click Upload File above
0 chars 0 lines
Paste JSON to view

Your JSON tree will appear here

1Paste JSON or drag a file
2Expand/collapse nodes to explore
3Need editing? Open in Editor

JSON Viewer — Best Practices

Start with Tree View

When dealing with unfamiliar JSON, use the tree view first to understand the overall structure before diving into details.

Validate First

Always validate your JSON before sharing. A missing comma or extra bracket can break an entire API response or configuration file.

Handle Large Files

For JSON files over 2MB, use collapsible sections to navigate. Large arrays are displayed with an item count for quick orientation.

From Viewer to Editor

Once you understand the structure, switch to our JSON Editor to make changes, format, or export to CSV, Excel, or Markdown.

JSON Viewer — Exclusive Features

Interactive Tree View

Navigate complex JSON structures with collapsible nodes. Expand and collapse sections to focus on the data that matters.

Syntax Highlighting

Color-coded keys, strings, numbers, booleans, and null values make your JSON instantly readable and easy to scan.

Expand & Collapse All

One-click Expand All to see every detail, or Collapse All to start from the top level. Perfect for navigating large datasets.

JSON Viewer — FAQ & Troubleshooting

How do I view a JSON file online?

Paste your JSON data into the input area or drag & drop a .json file. The viewer instantly displays an interactive tree view. Click to expand nodes and explore nested structures. All processing happens in your browser — no signup required.

Can I view large JSON files in this viewer?

Yes. The viewer handles files up to 2MB. Use the tree view collapsible sections to navigate large structures. For extremely large files, consider splitting into smaller chunks before viewing.

How do I read nested JSON objects?

Nested objects are displayed as expandable tree branches. Click the arrow icon next to a key to expand or collapse its contents. The full path to each value is shown, making it easy to understand the data hierarchy.

Is my data safe when using this JSON viewer?

Yes. All processing happens 100% in your browser. Your JSON data is never uploaded to or stored on any server. No backend, no tracking, no data leaves your device.

Can I edit JSON after viewing it?

This tool is a read-only viewer designed for exploring and browsing JSON structure. If you need to edit your JSON, use our JSON Editor which supports inline cell editing, beautify, minify, and export to CSV/Excel/Markdown.

What is the difference between a JSON viewer and a formatter?

A JSON viewer focuses on helping you explore and understand data structure through interactive tree visualization. A JSON formatter focuses on reformatting whitespace and indentation for code readability. Our JSON Editor combines both capabilities.