JSONovich pretty-prints JSON content of various types directly in a Firefox tab. Even if the JSON document contains errors, JSONView will still show the raw text. JSON documents are formatted, highlighted, and arrays and objects can be collapsed. Just install the add-on, restart the browser and you are good to go. This is the extension from which the Chrome version was ported. These add-ons will allow you to view those files inside the browser: Normally, when you open a JSON document in Firefox, you’re either prompted to download or it is displayed as plain text. It supports keyboard navigation, collapsible tree view, and sort object keys. With a click on a button (visible at top right corner of document) you can switch between the original document and the JSON inspector. Documents appear as if you’re viewing XML documents natively in the browser. The Missing JSON Inspector allows you to inspect JSON documents the way you inspect JavaScript objects in the console. You can customize extension’s theme via the built-in style editor.

JSONView displays JSON documents in human readable format and also validates it using a client-side javascript implementation of JSONLint. To install any of the above plugins, you can download the DLL file and move it the the application’s plugins folder, or search for the plugin in Notepad++’s plugin installer. JSONViewer Notepad++ plugin displays the selected JSON string in a tree view. To minify content, use the JSMin option and it will minimize the code by removing comments and unnecessary whitespace from files. To access any of those options, go to Notepad++ menu > Plugins > JSMin. If you open a minified document, it can nicely format and indent the content making it easy on the eyes while reading. JSMinNpp plugin for Notepad++ is a JSON data viewer and minifier. Here are a few selected applications and extensions that will allow you to view and debug JSON documents in a desktop application like Notepad++ and inside a web browser.

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