JSON Wizard is the perfect tool for you if you simply want to view and edit your JSON files. Or perhaps you want to be able to import XML/YAML/PLIST/CSV files. Perhaps you even want to be able to export to all those formats as well.
JSON Wizard provides both easy visual editing and direct access to the source code with live syntax checking.
Import pure JSON, XML, property lists (XML or binary), YAML, and even CSV
Edit and view JSON (via the Source-code or the Data-tree view) and observe changes live
Advanced live syntax checking/linter, with error checking and live notifications
Powerful search feature (to browse through all tree nodes)
Search-by-path feature (to access specific nodes)
Export/save to JSON, XML, YAML, property list (XML-based or binary)
Live HTTP request tool (GET/POST + with additional headers support)