Free online JSON field extractor. Extract a specific field from JSON objects by dot-notation path. Works on single objects or arrays. Runs locally in your browser, no upload.
100% Local
How to Use the JSON Field Extractor
Paste JSON into the input box and enter a dot-notation field path in the top box (for example user.name). Click Extract to pull that field from every object. Use Clear to reset.
How field paths work
Dot notation traverses nested objects: user.name
Multi-level paths are supported: user.address.city
Works on single objects — returns the field value directly
Works on arrays — returns an array of extracted values
Features
Handles nested paths at any depth
Returns undefined for missing fields
Validates JSON before extracting
All processing runs locally in your browser. Your data is not uploaded to any server.