What is JSON to FlatBuffers Schema Generator?
This tool converts JSON data to FlatBuffers .fbs schema definitions. FlatBuffers is an efficient cross-platform serialization library by Google that allows direct access to serialized data without parsing or unpacking, providing zero-copy reads ideal for games and performance-critical applications.
How to Use
- Paste your JSON data into the input area
- Set the namespace for the generated schema
- Configure options: enum detection and struct usage for leaf objects
- Click "Generate" and copy the FlatBuffers .fbs schema
Why Use This Tool?
Tips & Best Practices
- FlatBuffers tables support optional fields and schema evolution, while structs are fixed-size and more efficient
- Enable enum detection to convert repeated string values into type-safe enums
- Use structs for small, flat objects (like coordinates or colors) for better performance
- The namespace should follow reverse domain notation (e.g., com.example.myapp)
Frequently Asked Questions
What is FlatBuffers?
FlatBuffers is an efficient cross-platform serialization library originally created by Google for game development. Unlike Protocol Buffers, FlatBuffers allow direct access to serialized data without parsing or unpacking, providing zero-copy reads and minimal allocation.
How are JSON types mapped to FlatBuffers types?
JSON strings map to FlatBuffers string type, integer numbers map to int or long, floating-point numbers map to float or double, booleans map to bool, null fields are omitted, arrays map to vector types, and objects map to FlatBuffers tables.
What is the difference between tables and structs in FlatBuffers?
Tables are the primary way to define objects in FlatBuffers and support schema evolution with optional fields and defaults. Structs are simpler, fixed-size data structures that cannot be modified after creation and do not support optional fields. Structs are more efficient for small, leaf objects.
How are enums generated from JSON?
When enum detection is enabled, the tool scans string arrays for fields with a limited number of unique values. If the number of unique strings is below a threshold, it generates a FlatBuffers enum type instead of using strings, improving type safety and reducing buffer size.
Is my JSON data sent to a server?
No, all processing happens entirely in your browser. Your JSON data never leaves your device. The conversion is performed client-side.