JSON Formatter

Paste JSON and format it with collapsible tree view, syntax highlighting, search, and dark mode.

JSON Formatter automatically detects and beautifully formats JSON responses in your browser. No more staring at raw, unformatted JSON. **How it works:** - Open any JSON URL or API endpoint - The extension automatically detects and formats the JSON - Browse data with an interactive collapsible tree view **Features:** - Automatic JSON page detection (content-type, .json URLs, raw JSON) - Collapsible/expandable tree view with item counts - Syntax highlighting with distinct colors for strings, numbers, booleans, and null - Dark mode and light mode - Real-time search/filter across keys and values - Copy formatted JSON to clipboard - Customizable font size and default collapse depth - Expand All / Collapse All controls - Works offline, no data sent anywhere **Perfect for:** - Web developers debugging API responses - Backend developers testing endpoints - Data analysts reviewing JSON data - Anyone who works with JSON regularly