JSON Editor with Tree View - Edit JSON Online

Edit JSON data with tree navigation and text editing. Add, delete, modify properties. Validate syntax in real-time. Works offline in your browser.

Drop JSON file here or click to browse

Accepts .json, .txt files

Text Editor

Tree View

Enter valid JSON to see tree view...

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Frequently Asked Questions

Tree view displays JSON structure hierarchically with expand/collapse nodes. Navigate complex nested objects easily. See property names, types, and values at a glance without scrolling through raw text.

Yes. Switch between tree view for visual editing and text mode for bulk changes. Edits sync between modes. Tree mode validates structure automatically, text mode checks syntax on save.

In tree view, hover over an object and click the '+' icon. Enter the property name and value. The editor validates key names and supports strings, numbers, booleans, arrays, and nested objects.

The editor highlights syntax errors with line numbers and descriptive messages. Fix errors before switching to tree view. Auto-formatting helps identify missing brackets or commas.

Yes. In tree view, drag property nodes to reorder them. Note that JSON object property order isn't guaranteed in the specification, but the editor preserves your chosen order for readability.

Large files (over 1MB) load fine but may render slowly in tree view. For massive datasets, use text mode for editing and tree view only for navigation. Collapse unnecessary nodes to improve performance.

Yes. All parsing, editing, and validation happens entirely in your browser using JavaScript. Your JSON data never leaves your computer or gets uploaded to any server.

The editor checks JSON syntax, validates data types, identifies missing brackets/braces, catches trailing commas, and flags invalid escape sequences. Error messages show exact line and column numbers.

Yes. The editor auto-formats JSON with customizable indentation (2 or 4 spaces, or tabs). Export minified JSON to reduce file size, or prettified JSON for readability.

Use the search box to find keys or values. Results highlight matching nodes in tree view. Text mode supports browser find (Ctrl+F) for more advanced search patterns.

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