how-to-guide

jq with_entries: Transform Object Keys and Values

April 11, 2026 jqlang/jq ↗

with_entries is a built-in jq filter defined in src/builtin.jq that transforms objects by converting them to key-value entry arrays, applying a mapping function, and reconstructing the object, enabling concise key renaming, value modification, and entry filtering.

Working with JSON objects in the command line often requires renaming keys or modifying values across the entire structure. The jq with_entries filter, implemented in the jqlang/jq repository, provides a composable way to perform these object-wide transformations without verbose iteration logic

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