JSON Hero
JSON Hero is an open-source, beautiful JSON explorer for the web
...It runs as a web-based interface (and as a standalone app) that provides semantic, interactive rendering of JSON content, helping users understand the structure and meaning of data at a glance. JSON Hero automatically detects data types such as URLs, dates, colors, and base64 images, and presents them in meaningful ways. It’s designed for productivity and readability, with dark mode support, quick navigation, and collaboration features.