What does the 'Flattening Strategy' option do?

It determines the syntax used to represent nested keys in the final flat output, such as using dots (user.details.name) or slashes (/user/details/name).

Can I limit how deep the tool flattens the JSON?

Yes, you can set the 'Maximum Depth' parameter to stop flattening after a specific number of levels, keeping deeper structures intact.

Does this tool handle arrays within the JSON?

Yes, you can toggle the 'Include Arrays' option to decide whether array elements should be flattened into the key-value structure.

Can I remove empty values from the output?

Yes, enable the 'Filter Out Null/Undefined Values' checkbox to automatically exclude any keys that do not contain data.

Is the original order of keys preserved?

By default, the tool preserves the original order, but you can override this by selecting a sorting option like 'Alphabetical' or 'By Depth'.

Elysia Tools

Navigation

Data Processing

JSON Flattener

Flatten nested JSON objects into key-value pairs with customizable delimiters and flattening strategies

Execution

Run this tool

Fill in the form, run the tool, and review the result in one place.

Inputs

Set the required fields, then run the tool.

8 options

ContentPaste or type the main input values.2

JSON InputtextareaRequiredKey DelimitertextOptional

SettingsAdjust formats, ranges, numbers, and modes.3

Flattening StrategyselectRequiredMaximum DepthnumberOptionalSort KeysselectRequired

TogglesEnable or disable optional behavior.3

Include Arrays in FlatteningcheckboxOptionalEnabled when checkedFilter Out Null/Undefined ValuescheckboxOptionalEnabled when checkedPreserve Original OrdercheckboxOptionalEnabled when checked

Result

Ready for a run

Run the tool to preview files, text, structured data, or streamed output here.

Samples

JSON Flattener

Run this tool

Inputs

Result

Examples that match this tool

Continue with connected tools and hubs

Inputs

Result

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Flattening API Response for Spreadsheet Import

2. Simplifying Configuration Files

FAQ

Terraform Plan JSON Samples

JSON Samples

Chat Transcript JSON Samples

Rich Media JSON Samples

JSON Key Renamer

JSON Unflattener

From Pairs

JSON Key Extractor

JSON Interchange and Format Translation Tools

JSON Inspection, Diff, and Transformation Tools

JSON Schema, Mock Data, and API Fixture Generators

JSON Formatting, Diff, and Normalization Tools