JSON Master: Preview & Diff icon

JSON Master: Preview & Diff

by shaneleoproto@gmail.com · Developer Tools
Manifest V3 Free
View in Chrome Web Store Data as of 16 Oct 2026

High-performance JSON parser, virtualized tree viewer, and fast structural diff tool. Handles massive data without freezing.

Users
9
−2 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#207K
#173K among extensions
Version
1.0.0
updated 23 Mar 2026

Users

monthly, 7 months
049Mar 2026Jul 2026Oct 2026
Latest, 16 Oct 2026: 9 usersMove the mouse over the chart for any month

Ratings count

monthly, 7 months
001Mar 2026Jul 2026Oct 2026
Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About JSON Master: Preview & Diff

JSON Master is a powerful, high-performance developer tool designed for parsing, viewing, formatting, and comparing JSON data effortlessly. Built specifically for developers, data analysts, and QA engineers who work with massive JSON payloads that often freeze or crash standard browser viewers. 🔥 Key Features: - ⚡️ High-Performance Parsing: Easily handles large JSON files (MBs of data) without freezing your browser. - 🌳 Virtualized Tree Viewer: Navigate deeply nested JSON structures smoothly with our optimized virtualized rendering. - 🔍 Fast Structural Diff: Compare two JSON payloads side-by-side to quickly spot additions, deletions, and modifications. - 🎨 Syntax Highlighting & Formatting: Beautiful, readable JSON with intuitive color coding. - 📋 Copy & Export: Quickly copy JSON paths, keys, values, or the entire formatted JSON. - 🌙 Dark/Light Mode Support: Comfortable viewing in any environment. 💡 Why install JSON Master? Working with large API responses or complex configurations can be a nightmare if your tools can't handle the load. JSON Master solves the performance bottleneck, allowing you to instantly preview, analyze, and diff massive JSON data right in your browser. Say goodbye to tab crashes and laggy scrolling!

Growth

WindowUsersChangeRatingsRating
7 days−1−10.0%00.00
30 days−2−18.2%00.00
6 months+3+50.0%00.00

Version history

1 versions recorded
1.0.023 Mar 2026

Details

Category
Developer Tools
First seen
23 Mar 2026
Size
1.0 MB
Languages
en, zh-CN
Pricing
Free
Support
nollieleo.github.io
Extension ID
gpgopcnjfljgahcjgiohbojiifbmcadi

Permissions and risk

Minimal riskimpact 0, likelihood 2
Permissions
storage

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