Readable JSON Viewer

Readable JSON Viewer transforms raw JSON responses into a clean, code-editor-like tree view directly in your browser tab.

Readable JSON Viewer transforms raw JSON responses into a clean, code-editor-like tree view directly in your browser tab. Whether you're working with REST APIs, inspecting local files, or debugging backend responses, this extension makes JSON instantly readable without leaving the browser. Features: 🌲 Collapsible tree view — Click any object or array to fold or unfold it. Collapse everything at once with a single click or Cmd/Ctrl+X. 🎨 Syntax highlighting — Keys, strings, numbers, booleans, and null values are color-coded for faster scanning. 🔢 Smart line numbers — Line numbers stay in sync when nodes are collapsed, always reflecting the original JSON structure. 🔍 In-page search — Press Cmd/Ctrl+F to open the search bar. Navigate matches with the arrow keys or Enter/Shift+Enter. The current match and all other matches are highlighted. 🌗 Light & dark themes — Automatically follows your system preference, with a manual toggle available anytime. 📋 One-click copy — Copy the full formatted JSON to your clipboard with one click. Also available via Cmd/Ctrl+C when no text is selected. ⚡ Zero configuration — Works automatically on any URL that returns JSON, whether detected by content type or .json file extension.