JSON Hover EN

JSON Hover is a lightweight extension that instantly detects JSON text on any webpage. Hover over JSON content to preview it in a beautifully formatted, syntax-highlighted tree view. Click the 👁 icon to open an inline editor where you can validate, beautify, minify, and apply changes back to the original input field.

Perfect for developers working with APIs, backend engineers debugging configuration data, and anyone who frequently encounters JSON in their daily workflow.

Key features:
- Hover over any JSON text to preview a formatted tree view with syntax highlighting
- Inline editor for input fields: validate, beautify, minify, and apply (single-line inputs are auto-compressed on apply)
- Support for both light and dark themes with adjustable font sizes
- Fully configurable: domain whitelist, default collapse depth, theme, and font size
- Large JSON files (over 500KB) are parsed in a separate Web Worker to prevent page freezing
- Bilingual interface: English and Chinese (auto-detected from browser language)
- Works on all websites; restrict to specific domains via the whitelist setting
- Click the extension icon to access settings instantly

Ideal for admin dashboards, API debugging sessions, configuration file editors, and any page where JSON data needs quick inspection or editing without leaving the tab.