JSON pick or omit keys

Client

Choose keys to keep (pick) or drop (omit) at the top level only. Root value must be an object or an array of objects.

Learn more: pick or omit top-level keys

Keep only listed keys or drop listed keys at the top level of a root object—or on each object in a root array. Nested keys inside kept objects are unchanged.

Versus rename, redact, or cleanup

Pick/omit filters by key name at the top level only. Rename keys changes names; redact masks values by key name at every depth; the JSON cleaner removes null or empty values by shape.

Pick or omit keys

?

Only top-level keys on each object are changed. Key matching is case-sensitive. Root must be an object or an array of objects.

Mode

Nearby workflows on Toolcore

  • JSON formatter — when the document must parse before any transform or export.
  • JSON rename keys — when property names—not values—must change at depth.
  • JSON redact keys — to mask values by key name instead of dropping fields.

Common use cases

  • Trim API response objects to id/name fields before saving a sample.
  • Strip noisy or sensitive top-level keys from an array of row objects.

Common mistakes to avoid

  • Expecting nested keys to be removed

    Only the root object’s top-level keys (or each array element’s top-level keys) are affected. Nested properties stay as-is.

FAQ

Is processing done in the browser?

Yes. Parsing and output are handled locally in your tab.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

  • pick json keys online
  • omit json fields top level

More tools

Related utilities you can open in another tab—mostly client-side.