Forja - JSON Viewer & Formatter with JSONata

JSON viewer and formatter with built-in JSONata querying, lossless big numbers, tree view, syntax highlighting, and dark mode.

Forja is a modern JSON viewer and formatter for Chrome that goes beyond simple pretty-printing. Built for developers who work with JSON APIs daily. **JSON Viewer & Formatter** Automatically detects and formats JSON and JSONP responses in your browser. View data in a clean, collapsible tree view with syntax highlighting and depth indicators. **JSONata Query Engine** Query and transform JSON data directly in your browser using JSONata, a powerful expression language. Filter arrays, aggregate values, reshape objects, and extract exactly the data you need — no need to copy-paste into external tools. **Lossless Big Number Support** Unlike other JSON viewers that silently corrupt large integers (like 64-bit IDs from Java or database APIs), Forja preserves full numeric precision using lossless parsing. **Features** - Dark and light themes - Syntax highlighting - Clickable URLs within JSON values - Collapsible/expandable tree with keyboard navigation - JSON path display for every node - Copy path or value with one click - Sort keys alphabetically - Nested stringified JSON detection and inline expansion - Search/find across keys and values (Ctrl+F) - Breadcrumb navigation bar - JSONata query history and bookmarks - Resizable split pane for query results - Download JSON to file - Raw view with line numbers - Large file warning for 10MB+ documents - JSONP callback wrapper support **Why Forja?** Most JSON extensions just format your data. Forja lets you explore, query, and transform it. Whether you're debugging API responses, inspecting webhook payloads, or analyzing configuration files, Forja gives you the tools to understand your JSON data faster.