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UltraJSON

webcross.co.uk
ExtensionDeveloper Tools3 users
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Overview

Supercharged JSON Formatter with TypeScript generation, CSV exports, and dot-notation path copying.

UltraJSON - The Ultimate Developer Tool for JSON Transform the way you read, debug, and manipulate JSON in your browser. UltraJSON is a blazing-fast, supercharged JSON viewer designed explicitly for developers, data engineers, and power users. It automatically detects and formats JSON responses in your browser into a beautiful, collapsible tree, saving you the hassle of copy-pasting raw text into external formatters. But formatting is just the beginning. UltraJSON comes packed with an arsenal of advanced tools to skyrocket your productivity: πŸš€ Key Features Live Side-by-Side Diff: Stop squinting at massive payloads to spot the difference. Toggle "Diff Mode", paste your new JSON, and instantly see additions and deletions highlighted in real-time as you type. Type-Safe Code Generation: Instantly convert any JSON object directly into ready-to-use TypeScript interfaces. Perfect for frontend developers building type-safe APIs. Instant Export (Table, CSV, SQL): Turn arrays of objects into highly readable HTML tables, export them to CSV for Excel, or instantly generate INSERT statements to dump the data straight into your SQL database. Powerful Context Menu: Right-click on any key or value to instantly copy its exact JSON Path (e.g., user.orders[0].id), XPath, raw value, or even stringify and copy the entire node. Built-in Base64 Decoder: Spotted a Base64 encoded string hidden in your JSON payload? Just click the πŸ”“ icon next to it to instantly decode it inline. Advanced Search & Filtering: Instantly filter massive JSON structures by keys or values using the persistent top search bar. Developer-Grade Themes: Choose between your favorite developer themes including VS Code Dark, GitHub Light, Dracula, and Monokai. Your preference is securely saved to your local Chrome storage. πŸ”’ 100% Secure & Private UltraJSON is built with absolute privacy in mind. No Tracking: We do not use Google Analytics or any third-party tracking scripts. Zero Server Requests: Your data never leaves your machine. The extension parses, formats, diffs, and generates code 100% locally on your device within the browser tab. Requires Minimal Permissions: We only request access to the active tab to parse the JSON, and local storage to save your theme preference. Say goodbye to clunky, ad-filled online JSON formatters. Install UltraJSON today and get your data superpowers back.

Details

  • Version
    1.0
  • Updated
    July 4, 2026
  • Size
    58.2KiB
  • Languages
    English
  • Developer
    Johannes Stephanus Theron
    19 Deramore Drive York YO10 5HW GB
    Website
    Email
    info@webcross.co.uk
    Phone
    +44 7385 542850
  • Trader
    This developer has identified itself as a trader per the definition from the European Union and committed to only offer products or services that comply with EU laws.

Privacy

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The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

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