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Invert Object

Invert keys and values using lodash _.invert

Swap keys and values in an object.

Highlights:

  • Uses lodash _.invert
  • Values become string keys
  • Later values overwrite earlier keys

Example:

  • Object: {"a":"x","b":"y"}
  • Result: {"x":"a","y":"b"}

Enter a JSON object

Key Facts

Category
Data Processing
Input Types
textarea
Output Type
text
Sample Coverage
4
API Ready
Yes

Overview

The Invert Object tool allows you to quickly swap the keys and values of a JSON object using the reliable lodash _.invert method. This utility is essential for developers needing to perform reverse lookups or restructure data mappings efficiently.

When to Use

  • •When you need to perform a reverse lookup by finding the original key associated with a specific value.
  • •When restructuring configuration objects to make values the primary identifiers.
  • •When cleaning up data mappings where you need to verify unique value assignments.

How It Works

  • •Paste your JSON object into the input area.
  • •The tool processes the object using the lodash _.invert function.
  • •The output displays a new object where original values become keys and original keys become values.
  • •Note that if multiple keys share the same value, the last key processed will overwrite previous ones in the resulting object.

Use Cases

Mapping error codes to error messages and then inverting them to find the code from a message.
Converting a list of user IDs mapped to usernames into a lookup table for user IDs.
Refactoring configuration files where you need to switch between key-value and value-key access patterns.

Examples

1. Reverse Status Mapping

Backend Developer
Background
I have a status map where IDs are keys and status names are values, but I need to find the ID based on a status string.
Problem
Manually flipping a large object is error-prone.
How to Use
Paste the status object into the input field to instantly generate the inverted map.
Example Config
{"100": "Pending", "200": "Success", "400": "Error"}
Outcome
{"Pending": "100", "Success": "200", "Error": "400"}

2. Cleaning Duplicate Mappings

Data Analyst
Background
I have a mapping of category IDs to category names and want to see if any names are reused.
Problem
Identifying which IDs share the same category name.
How to Use
Input the category object; the inverted result will show which IDs were overwritten due to duplicate values.
Example Config
{"cat1": "Electronics", "cat2": "Home", "cat3": "Electronics"}
Outcome
{"Electronics": "cat3", "Home": "cat2"}

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FAQ

What happens if my object has duplicate values?

Since keys in a JSON object must be unique, the last key encountered for a specific value will be the one preserved in the output.

Does this tool support nested objects?

The tool performs a shallow inversion. Nested objects will be treated as string values and may not produce the desired structure.

What library does this tool use?

This tool utilizes the standard lodash _.invert function for consistent and predictable results.

Are the resulting keys always strings?

Yes, in JavaScript objects, keys are converted to strings, so the inverted values will become string keys in the output.

Is my data sent to a server?

No, the inversion process happens locally in your browser for maximum privacy and speed.

API Documentation

Request Endpoint

POST /en/api/tools/invert-object

Request Parameters

Parameter Name Type Required Description
objectInput textarea Yes Enter a JSON object

Response Format

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}
Text: Text

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-invert-object": {
      "name": "invert-object",
      "description": "Invert keys and values using lodash _.invert",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=invert-object",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

If you encounter any issues, please contact us at [email protected]