--- title: "JSON Viewer+ — App Overview" url: https://marlvel.ai/intel-report/developer-tools/json-viewer-1 category: Developer Tools developer: KAI WANG platforms: ios rating: N/A (0 ratings) pricing: paid report_level: overview generated: 2026-05-10 last_verified: "2026-05-10T03:27:44.775Z" --- > **Key Insight:** This is a privacy-focused, Manifest V3-updated utility designed to streamline JSON inspection for developers. | Metric | Value | |--------|-------| | Category | Developer Tools | | Rating | N/A ★ (0) | | Pricing | paid | | Platforms | iOS | | Latest Version (iOS) | 0.19.1 | | Developer | KAI WANG | ## What is JSON Viewer+? JSON Viewer+ is a browser extension that automatically formats and syntax-highlights JSON and JSONP content. As a Manifest V3-compliant fork of the original JSON Viewer, it provides a modernized toolset for developers to inspect and manipulate data directly within the browser. ## Key Features - **Visual Customization**: Offers 27 built-in syntax highlighting themes and customizable CSS and tab sizes. - **Data Navigation**: Includes collapsible nodes, line numbers, and search functionality to simplify the analysis of large JSON files. - **Omnibox Integration**: Allows users to trigger formatting or open a scratch pad directly from the browser address bar. - **Data Handling**: Supports sorting keys alphabetically and correctly processes numbers exceeding Number.MAX_VALUE. ## Who is it for? Web developers and software engineers who frequently debug or inspect JSON API responses. ## Links - [App Store](https://apps.apple.com/us/app/json-viewer/id6761603853?mt=12&uo=4) - [Full Intelligence Report](https://marlvel.ai/intel-report/developer-tools/json-viewer-1) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/developer-tools/json-viewer-1).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*