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Readable JSON Viewer

ExtensionDeveloper Tools6 users
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Item media 4 (screenshot) for Readable JSON Viewer
Item media 1 (screenshot) for Readable JSON Viewer
Item media 1 (screenshot) for Readable JSON Viewer
Item media 2 (screenshot) for Readable JSON Viewer
Item media 3 (screenshot) for Readable JSON Viewer
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Overview

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 β€” even with files containing thousands of lines. Features: ⚑ Zero configuration β€” Works automatically on any URL that returns JSON, whether detected by content type or .json file extension. 🌲 Collapsible tree view β€” Click any object or array to fold or unfold it. Collapse everything at once with a single click or Cmd/Ctrl+X. 🎨 Syntax highlighting β€” Keys, strings, numbers, booleans, and null values are color-coded for faster scanning. πŸ”’ Smart line numbers β€” Line numbers stay in sync when nodes are collapsed, always reflecting the original JSON structure. πŸ” In-page search β€” Press Cmd/Ctrl+F to open the search bar. Navigate matches with the arrow keys or Enter/Shift+Enter. πŸŒ— Light & dark themes β€” Automatically follows your system preference, with a manual toggle available anytime. πŸ“‹ One-click copy β€” Copy the full formatted JSON to your clipboard with one click. Also available via Cmd/Ctrl+C when no text is selected. πŸš€ Fast & lightweight β€” Handles even the largest JSON files with thousands of lines without slowing down.

Details

  • Version
    1.0.1
  • Updated
    March 18, 2026
  • Size
    37.62KiB
  • Languages
    English
  • Developer
    Email
    igorbarzakh@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

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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