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API & MCP

JSON MASTER - Offline JSON Beautifier & Viewer

Format and display JSON with color scheme and language switching

As of May 2026, JSON MASTER - Offline JSON Beautifier & Viewer has 46 users and a 5.00/5 rating from 6 reviews in the Developer Tools category.

Ekaterina EgorovaDeveloper Tools
Chrome Web Store ↗.crx
Usersup 15.0 percent+15.0%
46
46
Ratingno change0%
5.00
6 reviews
Reviewsno change0%
6
Version
1.3
Manifest V3

History

3 snapshots

Tracking since May 6, 2026.

46.484339.52May 6, 2026May 31, 2026
View as table
DateUsersRatingReviewsVersion
May 6, 2026405.0061.3
May 17, 2026425.0061.3
May 31, 2026445.0061.3
Now465.0061.3

Permissions & access

Permissions
storage
Host access
None declared

Screenshots

JSON MASTER - Offline JSON Beautifier & Viewer screenshot 1JSON MASTER - Offline JSON Beautifier & Viewer screenshot 2

About

JSON MASTER - Offline JSON Beautifier & Viewer

Transform and visualize your JSON data with this powerful offline tool. No data transmission, no tracking - your data never leaves your device.

Key Features

Format and beautify JSON with automatic syntax highlighting
Multiple tabs for working with several JSON files simultaneously
Light and dark themes with smooth transitions
Code editor features including line numbers and jump-to-line navigation
Real-time search with highlighted matches and keyboard navigation
Easy file saving and clipboard operations
Support for 9 interface languages

How to Use

1. Paste your JSON data into the input area
2. Watch it instantly format with proper indentation and highlighting
3. Navigate through the formatted JSON using line numbers
4. Use the search feature to find specific keys or values
5. Copy the formatted JSON or save it to a file
6. Switch between tabs to work with multiple JSON structures
7. Use keyboard shortcuts Alt+1-4 to switch tabs and Ctrl+Tab to cycle through them

All processing happens locally in your browser - work confidently with sensitive data knowing it stays on your device.

Technical

Version
1.3
Manifest
V3
Size
22.94KiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
dkmnkgkcciocbmbjdnjeclfepnlhilpp
Developer ID
ub36e4082742bb931ef39e1f2e5d48d93
Developer Email
[email protected]
Created
May 5, 2025
Last Updated (Store)
May 28, 2025
Last Scraped
May 31, 2026
Website
—
Support URL
—
Privacy Policy
—

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Data sourced from the Chrome Web Store · last verified May 31, 2026.