JSON Formatter Sort Keys

The tool accepts a JSON payload and applies a recursive key sort to every object encountered. By default, object keys are ordered alphabetically (ascending) at all nesting levels; alternatively, a custom key order can be provided to enforce a specific sequence. Values, arrays, and scalar data are preserved exactly as input, ensuring no data mutation beyond key ordering. This capability is valuable for generating stable snapshots for tests, diffs, and configuration validation. The process operates entirely on the client side, enabling offline use and removing server-side dependencies, which enhances privacy and performance during development workflows. Use cases include preparing API responses or configuration files for comparison across environments, producing consistent logs, and generating deterministic data for unit tests. Unique value lies in its recursive approach, support for a custom priority list, and the ability to output clean, indented JSON suitable for review and diff tooling. Core features include: recursive sorting of object keys, optional custom order priority, support for ascending/descending directions, preservation of array order, and standard 2-space indentation in the output. Typical use cases span API testing, configuration management, data normalization for diffs, and reproducible data samples for demonstrations.