JSON Flatten & Unflatten Tool
JSON Flatten & Unflatten Tool: Recursively flattens hierarchy into dot-delimited key paths.
About this json flatten & unflatten tool
Recursively flattens hierarchy into dot-delimited key paths Transforms and validates developer data structures locally, preventing confidential payload exposure during data wrangling.
Syntax parsing & data transformation logic
Reads a JSON object and flatten/unflatten mode. Flatten maps nested object keys to dot paths; unflatten expands dot paths back to objects. Empty, dotted or prototype-related key segments are rejected where ambiguous or unsafe.
Worked conversion & output example
Scenario: A data engineer flattens a nested JSON configuration into dot-notation paths for relational database storage.
Sample input:
Second field:
Processing: The client-side engine parses the provided input, executes the transformation routine, and outputs the result in real time.
Illustrative output:
Syntax constraints & input size limits
Keys cannot be empty, contain dots during flatten, or use __proto__, prototype or constructor path segments. Arrays and empty objects are treated as leaf values. Unflatten rejects colliding paths or scalar/object and array/object shape conflicts instead of discarding data.
Data conversions and formatting in JSON Flatten & Unflatten Tool reflect standard structured syntax. Verify parsed outputs against your target runtime before deployment.
Local client execution boundary
Data parsing and transformations in JSON Flatten & Unflatten Tool execute in the local browser tab without remote data transmission.
Data format specifications & language standards
Data interchange formats and language grammar specifications:
- RFC 8259 (The JavaScript Object Notation Data Interchange Format)
- ECMA-404 (The JSON Data Interchange Standard)
JSON Flatten & Unflatten Tool verification · Audit standards
How to use it
- Enter one JSON object and choose flatten or unflatten mode.
- Flatten nested object keys into dot paths, or split dot paths back into nested objects.
- Read the resulting JSON object.
Frequently asked questions
How does JSON Flatten and Unflatten choose its mode?+
It parses the primary value as a JSON object and reads the secondary field lowercased. Exactly unflatten selects path expansion; every other secondary value selects flattening.
Can you show an input and its result?+
Flattening {"user":{"name":"Ada"},"active":true} returns JSON with user.name set to Ada and active retained as true. The values are not converted to display strings.
Which JSON shapes are rejected?+
The root must be a non-array object. Empty path parts, dotted source keys, and __proto__, prototype, or constructor segments are rejected to keep generated paths safe.
What does unflattening not infer?+
It does not reconstruct arrays, preserve original key ordering, merge conflicting paths, infer types from text, or accept an arbitrary dotted-key convention beyond the implemented object path rules.