json2json

Uses JSON-like templates to define transformation rules, making complex mappings predictable and maintainable without imperative code, as demonstrated in the tutorial with nested templates.

Supports array aggregation and conversion to key-value maps, enabling efficient data restructuring like filtering arrays or creating lookup tables from JSON arrays.

Handles deeply nested JSON structures through recursive templates, allowing transformations of complex data hierarchies with properties like 'as' and 'path'.

Provides format functions to precisely customize output keys and values, offering fine-grained control over transformed data, as shown in the example with image key reformatting.