JSON Viewer and Formatter

This tool provides a fast, client-side JSON viewer and formatter that accepts JSON text and returns a readable, well-indented representation. It validates syntax using a strict parser and reports errors with position information for quick debugging. Conceptually, JSON is treated as a hierarchical data graph, and the tool renders both a plain formatted text view and a navigable tree representation to aid comprehension.\n\nAll operations are performed in the browser with no server requests, making it ideal for debugging API responses, inspecting data payloads, and teaching JSON concepts. The formatter is deterministic, so identical input yields identical output, which supports diffing and versioning workflows.\n\nCore features include strict syntax validation, pretty-print formatting, and configurable indentation. Optional enhancements include a collapsible tree view, search within results, and export or copy options. It preserves Unicode characters and handles large documents within reasonable browser memory limits.\n\nTypical use cases include API developers verifying payload structure, QA engineers validating contract responses, and instructors demonstrating JSON shapes in classrooms.