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Auto-format and validate JSON & API responses instantly. Syntax highlighting, tree view, dark mode. Data never leaves your browser. JSON Formatter Pro automatically detects and formats JSON in your browser. Open any URL that returns JSON or an API response, and it instantly transforms raw JSON into a clean, syntax-highlighted, collapsible tree view — no copy-pasting into web tools needed. FORMATTING & VALIDATION: • Auto-Detection — Automatically detects and formats JSON responses and .json files • JSON Beautifier — Pretty-print minified JSON with proper indentation • JSON Validator — Catch syntax errors with clear, actionable error messages • Raw & Parsed Toggle — Switch between raw JSON text and formatted tree view instantly DEVELOPER TOOLS: • Syntax Highlighting — Color-coded keys, strings, numbers, booleans, and null values • Collapsible Tree View — Expand and collapse any node to navigate large JSON documents • Clickable URLs — Links in JSON values are automatically clickable • Dark Mode — True dark theme designed for long coding sessions • Copy to Clipboard — Copy any node or the entire formatted JSON with one click Runs 100% in your browser. No external servers, no data collection, no tracking, no ads. Fully open-source.
JSON Viewer Pro
A completely free extension to visualise JSON response in awesome Tree and Chart view with great user experience and options. It… A completely free extension to visualise JSON response in awesome Tree and Chart view with great user experience and options. It has lot of unique features which makes it a must have JSON formatter for beginner to advance users. ✅ Completely Free and no advertisements. ✅ Beautify JSON response from API ✅ Visual representation of JSON with Chart ✅ Depth traversing of JSON property using breadcrumbs ✅ Access or Traverse via JSON Path navigation Prompt ✅ Write custom JSON in Input area ✅ Configurable Content-Type and JSON Content Detection ✅ Ignore particular websites or URLs from rendering ✅ Import local JSON, YAML and XML files supported ✅ Download JSON file using Context Menu ✅ Dark and Light theme supported ✅ Custom CSS supported ✅ Intuitive User Interface ✅ Copy path of any property and value easily ✅ Access JSON in your console using only json keyword
JSON Prettier
Use JSON Prettier online application as your json formatter, validator and editor to see json beautify instantly in the browser. 🚀 JSON Prettier is your all in one helper for working with JSON in Google Chrome. It turns tangled API responses into clean, readable structures so you can understand data faster, debug errors, and share examples with your team. With one click the extension transforms any raw payload into a pretty output that feels like reading normal text instead of noise. 🖥️ This tool works like an JSON formatter but without switching tabs. It provides format and editor capabilities directly inside Chrome. Developers often need to check API responses. With the extension, you see JSON instantly. Powerful features help you inspect and edit with speed. 📖 The extension gives you clear structure and reliable validation. Work faster with JSON Prettier and enjoy organized data every time. 👁️ JSON Prettier shows pretty json with clear indentation and coloring so you always see where objects end, which fields change, and how data is structured. ⚙️ You get several core utilities in JSON Prettier: • Formatter to reformat messy strings in seconds • Viewer that lets you expand and collapse nested objects • Editor for quick fixes and experiments with payloads • Validator that checks structure while you type and highlights problems 💎 The extension also has these additional features: ► Offers tree and text display options ► Allows expanding and collapsing tree structures ► Maintains your expanded nodes even after page reloads ► Lets you open a new editor for creating new objects ► Allows opening an editor from selected text via right-click menu ► Handles very large numeric values such as BigInt and BigFloat ► Includes light and dark modes with syntax highlighting 👀 Together these tools keep your json format consistent across projects and help reduce mistakes before they reach production. 🎯 JSON Prettier behaves like a full featured online json formatter, but lives directly in your browser. Use it whenever you need: ➤ JSON formatter online without opening another site ➤ JSON editor online for longer sessions of data tweaking ➤ JSON pretty print online when you want instant readable output from any raw payload 🧾 Use json pretty printer options whenever you need to print for logs, tickets, or documentation pages. Behind the scenes the engine runs pretty printing json and online pretty print json routines so your output is always tidy. 🎨 For presentation and readability you can choose how the formatted data should look. Different modes let you: 1. Make json pretty when you receive compressed blobs from remote services 2. Generate pretty format json for screenshots, slides, and wiki pages 3. Convert ugly API responses into pretty json online samples for teammates 4. Use json prettify whenever you want to reindent files from legacy systems 5. Apply json beautify to clean exports from third party dashboards 🤝 These features ensure that JSON Prettier is not only a technical tool but also a great assistant for communication with non technical colleagues. ✅ Validation is just as important as formatting. JSON Prettier gives you a fast safety net before you send data anywhere: ▸ Validate json in one click and stop broken payloads early ▸ Rely on json verify to confirm that brackets and commas are all in the right place ▸ Combine json validator checks with format cleanup so your structure and style stay in sync 🔍 In everyday development you constantly open responses from REST APIs, log files, and browser tools. With JSON Prettier you can see json clearly, even in very large objects. The compact panel lets you collapse sections you do not need, search through keys, and focus only on the parts that matter for the bug or feature you are working on. 👥 This makes JSON Prettier useful for many roles: 1️⃣ Backend, frontend and full stack engineers who want json viewer and formatter shortcuts next to the code 2️⃣ QA specialists who must validate test data repeatedly during automated and manual testing 3️⃣ Data analysts who prefer online json viewer experiences instead of plain text logs 4️⃣ Technical writers who need to make json pretty before adding it into how to guides and API references 🧳 JSON Prettier acts like a portable toolbox that combines online json pretty, editor, and viewer features, ready whenever you inspect a network request or copy data from another tab. 🤝 During code review and collaboration the formatted output becomes a common language for the whole team. Instead of arguing about indentation, simply rely on JSON Prettier to produce the standard view: - Show pretty json examples - Attach json print pretty snippets - Share links to json pretty online ✨ Install JSON Prettier today and turn your browser into a complete workspace for working with structured data. From json beautifier to json editor, validator, and pretty print, you always have the right tool close to your code.
JSON Formatter 格式化
JSON格式化，可以多窗口多开，方便对比JSON入参和数据出参，现已支持粘贴图片到工作区。Makes JSON easy to read and compare, Image contrast is now supported. Right-click, Beautiful, fold, compare JSON, You deserve it. 右键选择JSON Formatter，好看的，可折叠，可比较JSO的工具，你值得拥有！
JSON Viewer
Most aesthetic & customizable JSON/JSONP viewer with themes, custom search, syntax highlighting/checking & copy features. 🧩 JSON Viewer – The Ultimate JSON & JSONP Formatter for Chrome Beautiful, blazing-fast, and fully customizable. Visualize and format JSON like never before with 27 themes, collapsible nodes, raw/highlight toggles, and advanced editing options – all in one lightweight Chrome extension. 🔥 Why Choose JSON Viewer? Make raw JSON readable, searchable, and stunningly presented. Whether you’re a developer, data analyst, or API tester – this is the must-have tool in your browser. 🎨 27 Gorgeous Built-in Themes – Choose what suits your eyes 🧩 Fully Customizable – Colors, tab size, formatting limits, line numbers, and more 📎 Collapsible Nodes – Navigate complex objects with ease 🔍 Clickable URLs & Omnibox Support – Type json + TAB to paste and preview JSON instantly 📁 Works with Local Files – Just enable permissions in the Extensions page 🔄 Scratchpad Mode – Type, paste, and format JSON in a standalone editor 📊 Sort by Keys + Editable JSON – Tweak and analyze live data ⏱️ Header Options – Add timestamp and source URL to your previews ⚙️ Quick Tips 💡 Enable Incognito and Local File Access in chrome://extensions for full functionality 🛠️ Conflicts with other JSON formatters? Disable the others for best results 🔁 After updates, Chrome may reset permissions—simply recheck the access boxes if needed 🌐 Perfect for: REST API developers Front-end and back-end engineers Anyone working with structured data in the browser 📥 Install now to transform the way you view JSON in Chrome!
