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YAML Key Extractor

List keys from nested mappings locally and inspect where each key appears.

Unique keys
Total occurrences
ReadyLists mapping/object keys, not array indexes or scalar values.

How to use this YAML Key Extractor

Extract unique YAML mapping keys with occurrence counts and paths. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.