JSON Viewer Chrome Extension

JSON Viewer, support tree view, formatted beautiful text view, a most beautiful and customizable JSON/JSONP highlighter

As of May 2026, JSON Viewer Chrome Extension has 228 users and a 4.00/5 rating from 2 reviews in the Developer Tools category.

Usersdown 2.1 percent2.1%
228
228
Ratingno change0%
4.00
2 reviews
Reviewsno change0%
2
Version
0.0.1
Manifest V3

History

2 snapshots

Tracking since Apr 24, 2026.

233.88227.5221.12Apr 24, 2026May 21, 2026
View as table
DateUsersRatingReviewsVersion
Apr 24, 20262334.0020.0.1
May 21, 20262224.0020.0.1
Now2284.0020.0.1

Permissions & access

Permissions
activeTabstoragescripting
Host access
None declared

Screenshots

JSON Viewer Chrome Extension screenshot 1JSON Viewer Chrome Extension screenshot 2JSON Viewer Chrome Extension screenshot 3JSON Viewer Chrome Extension screenshot 4

About

A clean and powerful JSON viewer extension for Chrome with tree view and text view support.

## Features

- 🌲 Tree View: Collapsible tree structure for better JSON visualization
- 📝 Text View: Traditional text view with line numbers and code folding
- 🎨 Dark/Light Theme: Seamless integration with Chrome themes
- 🔍 Long String Handling: Automatically truncates long strings with expandable view
- 📊 Object Size: Shows the number of items in arrays and objects
- 🔗 URL Detection: Automatically converts URLs to clickable links
- ⌨️ Keyboard Friendly: Easy navigation and interaction
- 🎯 Line Numbers: Clear line numbers with folding indicators
- 🚀 Performance: Handles large JSON files smoothly

## How to Use

1. Open a JSON file in Chrome
2. Click the "Open JSON Viewer" button in the editor title bar, or:
3. Right-click in the editor and select "Open in JSON Viewer"
4. Use the toolbar buttons to:
   - Switch between Tree and Text views
   - Toggle dark/light theme
   - Expand/collapse all nodes in tree view
   - Click on line numbers to fold/unfold sections in text view
   - Click on truncated strings to expand/collapse them

## View Modes

### Tree View
- Hierarchical visualization of JSON structure
- Click on arrows (▶/▼) to expand/collapse nodes
- Shows array/object sizes
- Hover effects for better readability

### Text View
- Traditional JSON text representation
- Line numbers with folding capability
- 4-space indentation
- Long string truncation with expandable view
- Syntax highlighting


## Demo
https://microsoftedge.github.io/Demos/json-dummy-data/64KB.json

Technical

Version
0.0.1
Manifest
V3
Size
25.88KiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
kggkmmjihpjangbkpcdidlhfbnnfaldn
Developer ID
uf46ab05da7dc7114962abfb079baf71d
Developer Email
[email protected]
Created
Jan 7, 2025
Last Updated (Store)
Jan 9, 2025
Last Scraped
May 21, 2026
Website
oslook.com
Support URL
Privacy Policy

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Data sourced from the Chrome Web Store · last verified May 21, 2026.