PYYUPSK

A browser extension that catches JSON responses and shows them with syntax highlighting, collapsible trees, and search.

Features

• Auto-detect: The extension turns on for application/json responses.
• Syntax highlighting: Keys, strings, numbers, and booleans each show in a different color.
• Collapsible trees: You can expand or collapse nested objects.
• Search and filter: You can find keys or values in large JSON payloads.
• Copy formatted: You can copy the JSON with one click, with correct indentation.
• Works everywhere: The extension runs in Chrome, Firefox, and Edge, through WXT.

Why

Browser-native JSON views are basic. This extension adds formatting and navigation. These features make debugging API responses easier.