Free JSON Viewer Tools for Developers and Debugging | 14
Update: Sep 7, 2026 · 288 apps reviewed
JSON viewer tools make raw API responses, configuration files and nested data structures readable at a glance. The best free options go beyond basic formatting, offering tree views, syntax highlighting, collapse controls and quick validation so you can spot missing commas or broken brackets fast. Some are lightweight desktop utilities, while others work inside the browser or as editor extensions for a smoother workflow. Choose based on how often you inspect JSON, whether you need offline use, and how much structure you want for debugging, editing or comparing files.
Top programs about Free Json Viewer
- 4.6
JSONpop is a handy Chrome extension that simplifies the process of editing JSON in textareas. With this extension, you can easily modify JSON data…
- 4.6
JSONViewer port for Chrome is an updated version of Gildas' JSOnView extension. The JSONViewer port for Chrome is a completely free and open source…
- 4.6
JSON Pilot is a free Chrome add-on designed for efficiently viewing and interacting with JSON data. It automatically activates on pages with application/json content,…
- 4.6
JSON Explorer is a free program for Chrome, belonging to the category 'Add-ons & Tools'.
- 4.5
Select To Format JSON, from an independent developer, converts selected raw JSON into a readable, formatted view inside Chrome. The extension opens formatted output…
- 4.6
JSON Formatter for Chrome is a free extension that allows you to format JSON sent as plain text within the request body of a…
- 4.6
JSON Clarity is a Chrome extension designed to beautify and format JSON data, making it more readable and interactive. This tool automatically detects JSON…
- 4.6
JSON Formatter is a free app for Chrome, that belongs to the category 'Add-ons & Tools'.
