Can this tool handle deeply nested JSON?

Yes, you can adjust the 'Maximum Depth' setting up to 20 levels to ensure all nested keys are captured.

What output formats are supported?

You can export the extracted keys as a simple list, a JSON array, a Markdown table, or a hierarchical tree structure.

Does the tool support dot notation for nested keys?

Yes, by enabling the 'Flatten Nested Keys' option, the tool will convert nested paths into dot notation (e.g., user.profile.name).

Can I see the data type of each key?

Yes, enable the 'Include Data Types' checkbox to see whether a key corresponds to a string, number, boolean, object, or array.

Is my JSON data stored on your servers?

No, all processing is performed locally in your browser to ensure your data remains private and secure.

Elysia Tools

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Data Processing

JSON Key Extractor

Extract all keys from JSON objects with multiple output formats. Perfect for analyzing JSON structure, documentation generation, and understanding complex nested objects.

Execution

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Inputs

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8 options

ContentPaste or type the main input values.1

JSON InputtextareaRequired

SettingsAdjust formats, ranges, numbers, and modes.3

Output FormatselectRequiredSort Keys ByselectRequiredMaximum DepthnumberOptional

TogglesEnable or disable optional behavior.4

Flatten Nested KeyscheckboxOptionalEnabled when checkedConvert nested keys to dot notation (e.g., "user.profile.name")Include Data TypescheckboxOptionalEnabled when checkedInclude the data type of each key (string, number, boolean, object, array, null)Include Full PathcheckboxOptionalEnabled when checkedInclude the full path to each key in nested objectsRemove Duplicate KeyscheckboxOptionalEnabled when checkedRemove duplicate keys when they appear in multiple locations

Result

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Samples

JSON Key Extractor

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Key facts

Overview

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Use cases

Examples

1. API Documentation Generation

2. Debugging Nested Configuration

FAQ

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