JSON Editor 4+

JSON Editor is a tree & text editor for JSON, JSON5 and JSON Lines data formats. In a clean and user-friendly interface, it allows you to create, visualize, modify, validate, format and save your JSON documents.
Along with the included HTTP Client, is a powerful tool to inspect and debug your API endpoints.

JSON Editor has the smarts needed to make the minimum changes when editing a file, even in the tree mode.
This is especially useful when you keep the files in a repository, because only the relevant changes will be shown when diff-ing the edited files.

JSON Tree Editor
• Presents the JSON in a "tree" like interface, making easier to understand how the data is structured
• Makes the process of editing JSON data error-free and way more easier than dealing with raw text
• Its selection is automatically reflected in the text editor

JSON Tree Editor - Features
• Select multiple sibling elements
• Cut, copy, paste, duplicate, delete and reorder elements, even when multiple elements are selected
• Find & replace text in the JSON elements. Support for "Regular Expression" is included, too
• Choose where the Find & replace will take place: in "Key" or "Value" column or both
• Sort elements, either by clicking one of the column headers or using the dedicated panel
• Set label for child objects to help you understand what each object represents
• Edit the elements, even when multiple ones are selected (via "Edit -> Edit Value...")
• Copy elements as Swift or Obj-C objects, JSON data or PLIST data
• Paste JSON data
• Embed elements in array or object
• Shift elements left or right
• Move elements up or down
• Row height which accommodates multi-line text
• JSON5 comments can be viewed in the leftmost column by hovering the cursor over the indicator
• Increase and decrease font size for better readability
• Undo & redo
• Customization options available in "Settings -> View & Edit -> Tree Editor"

JSON Text Editor
• Offers a convenient way to interact with the JSON's textual content and to investigate invalid JSONs
• The changes made in the text editor can be synchronized with the tree editor
• Make the JSON document human readable or compact, even if it is not entirely valid

JSON Text Editor - Features
• JSON validation
• Syntax coloring, auto-indentation and line numbers
• Customize the font and its size
• Change editor's location (right or bottom)
• Toggle the visibility of the the text editor
• Show (or hide) invisible characters, like tab or new lines
• Find & replace
• Undo & redo
• Customization options available in "Settings -> View & Edit -> Text Editor"

Folder Browser
• Browse folders' content by dragging them on the app's Dock icon or by using "File → Open" panel
• Choose JSON files to make quick edits or to view their content

Snippets
• Save JSON elements for later reuse
• Access the Snippets by clicking the corresponding toolbar button

Quick Look Preview Extension
• Preview the JSON files in Finder using the Quick Look extension provided by the app

HTTP Client
• Perform HTTP requests (GET, POST, PUT, DELETE, HEAD)
• Create folders to group the requests - very handy to group the projects or APIs you're working with
• Automatically detects if response is text or binary, allowing you to preview or save the binary one
• HTTP authentication (basic, digest) and Proxy authentication, with Keychain integration
• Support for OAuth 2.0 - use the built-in providers or add custom ones
• Once you have added and setup an OAuth 2.0 authorization you can attach it to a HTTP request - JSON Editor will take care of refreshing and attaching access token to the HTTP request
• Export and import HTTP requests and OAuth authorizations

Other Features
• Dark mode, including a beautiful "black" mode
• Auto Save & Versions, including the possibility to disable them
• Detect when the file is changed by another application
• Fullscreen
• Services integration
• Command-line/Terminal integration