Lua to JSON Converter

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Convert Lua tables to JSON format with support for nested structures, arrays, and automatic data type detection. Perfect for exporting Lua data to web applications, APIs, and cross-platform development.

✓ Nested Structures✓ Array Detection✓ JSON Download

Lua

JSON

Conversion Features

Lua Handling

  • •

    Table Detection

    Automatically identifies Lua tables from code

  • •

    Data Type Conversion

    Converts Lua types to appropriate JSON equivalents

  • •

    Array vs Object Detection

    Intelligently distinguishes between arrays and objects

JSON Features

  • •

    Pretty Printing

    Format JSON with proper indentation

  • •

    Variable Wrapping

    Option to wrap JSON in a JavaScript variable

  • •

    Download Support

    Save generated JSON to a local file

Common Use Cases

Game Development

  • • LÖVE framework data
  • • Game configs export
  • • Save data conversion
  • • Asset metadata

Data Integration

  • • API payload creation
  • • Cross-platform sharing
  • • Web app integration
  • • Database migrations

Development

  • • Config file conversion
  • • Data visualization
  • • Legacy code migration
  • • Prototyping

Type Conversion Details

Lua to JSON Type Mapping

  • •

    Primitive Types

    Lua strings → JSON strings
    Lua numbers → JSON numbers
    Lua booleans → JSON booleans
    Lua nil → JSON null

  • •

    Sequential Tables

    Lua tables with numeric indices → JSON arrays

  • •

    Associative Tables

    Lua tables with string keys → JSON objects

Special Handling

  • •

    Mixed Tables

    Tables with both numeric and string keys are converted to objects

  • •

    Nested Structures

    Recursively processes nested tables to maintain hierarchy

  • •

    Comments

    Lua comments are automatically stripped during conversion

Frequently Asked Questions

How does the converter handle Lua tables with mixed keys?

Lua tables can have both numeric and string keys. When converting to JSON, the converter analyzes the key pattern. If the table has sequential numeric keys starting from 1 (as is typical for Lua arrays), it's converted to a JSON array. Otherwise, it's treated as a JSON object. For mixed tables, the numeric keys become string properties in the JSON object.

What about Lua functions and other non-primitive types?

Lua functions, userdata, threads, and other non-primitive types cannot be directly represented in JSON. The converter will omit these values or replace them with null depending on the context. Only data types that have direct equivalents in JSON (strings, numbers, booleans, nil, and tables) are fully supported.

Is the JSON output validated?

Yes, the converter validates the generated JSON before returning the final result. This ensures that the output is valid JSON that can be used in web applications, APIs, or other systems. If any validation issues are detected, an error message will be displayed.

Using the Generated JSON

Once you've converted your Lua tables to JSON, you can use the output in various ways:

  • Download the JSON file for storage or distribution
  • Copy the JSON directly to use in web applications or API requests
  • Wrap the JSON in a JavaScript variable for direct inclusion in scripts
  • Import the JSON into visualization tools for data analysis
  • Use the generated JSON as configuration for cross-platform applications

The pretty-print option makes the JSON more readable for humans, while the compact option reduces file size for production environments.

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