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View JSON documents in the browser. Normally when encountering a JSON document (content type "application/json"), the browser simply shows plain text. With the JSONView extension, JSON documents are formatted, highlighted, and arrays and objects can be collapsed. Even if the JSON document contains errors, JSONView will still show the raw text. Once you've got JSONView installed, check out http://jsonview.com/example.json to see the extension in action!
React Developer Tools
Adds React debugging tools to the Chrome Developer Tools. React Developer Tools is a Chrome DevTools extension for the open-source React JavaScript library. It allows you to inspect the React component hierarchies in the Chrome Developer Tools. You will get two new tabs in your Chrome DevTools: "Components ⚛" and "Profiler ⚛". The Components tab shows you the root React components that were rendered on the page, as well as the subcomponents that they ended up rendering. By selecting one of the components in the tree, you can inspect and edit its current props and state in the panel on the right. In the breadcrumbs you can inspect the selected component, the component that created it, the component that created that one, and so on. If you inspect a React element on the page using the regular Elements tab, then switch over to the React tab, that element will be automatically selected in the React tree. The Profiler tab allows you to record performance information. This extension requires permissions to access the page's React tree, but it does not transmit any data remotely. It is fully open source, and you can find its source code at https://github.com/facebook/react/tree/main/packages/react-devtools-extensions.
Seven JSON Viewer
Minimal JSON Viewer with JSON Path Minimal JSON Viewer with JSON Path Support. Features -------------- 1. Syntax Highlighting 2. Collapsible tree for improved readability 3. Dark themed 4. Realtime JSON Path support 5. Multiple Themes Note: This extension might have conflict with other JSON highlighters/beautifiers, like 'JSON Formatter', 'JSONView', 'Pretty JSON' and so on – Please, disable those before trying this for better experience.
JSON-handle
It's a browser and editor for JSON document.You can get a beautiful view. And transcoding Unicode Base64 URL with decode & encode. Edit and browse JSON document in a node tree diagram. After installed, open the URL will trigger JSON-handle: 安装后打开下面网址可以看到JSON-handle启动的效果： http://jsonhandle.sinaapp.com/demo.json
JSON Formatter Pro
Beautiful JSON viewer with sidebar — search, copy paths, export, pin nodes, and history. In 2026, handling JSON data doesn’t have to be a hassle. JSON Formatter Pro is a browser extension that automatically detects and formats JSON data on webpages, turning raw responses into a clean, interactive viewer. Instead of reading unformatted JSON, you can explore data in a structured tree view that makes nested objects and arrays easier to understand. This helps when reviewing API responses, debugging data, or inspecting JSON documents directly in the browser. Automatic JSON Detection Automatically detects JSON responses on supported pages and opens them in a structured viewer. Interactive Tree View Browse JSON data in an expandable and collapsible tree layout. Search Inside JSON Search keys and values within large JSON responses. You can: • find specific fields quickly • highlight matching results • move through large datasets more easily JSON Path Generator Generate JSONPath for selected nodes to help with inspection and debugging. Copy Tools Copy useful data directly from the viewer, including: • key • value • path • object Pinned Nodes Pin important fields for quicker access while inspecting large responses. History Tracker View recently opened JSON responses with details such as: • page URL • JSON size • timestamp Size Analyzer See response size information such as bytes, KB, or MB for quick payload inspection. Dark and Light Theme Choose the appearance that feels most comfortable during use. Works Across Websites Use the extension on supported webpages that return JSON content, including local development environments. Lightweight and Fast Designed to stay responsive while viewing large JSON responses. Privacy JSON Formatter Pro does not collect or sell personal data. Processing happens locally in the browser. Why Use JSON Formatter Pro JSON Formatter Pro helps make raw JSON easier to read, search, inspect, and export without leaving the page. The main issue was the “Who Should Use This Extension” section because Chrome Web Store often treats role-stuffing as keyword spam. Remove that whole block and keep the description focused on actual functionality.
