Clone this repo:
  1. bbf4dac Made doubles output with higher precision in JSON and elsewhere. by Wouter van Oortmerssen · 35 hours ago master
  2. 8df2d9a Removed truncating of enum vals to int in ReverseLookup. by Wouter van Oortmerssen · 36 hours ago
  3. 462ce03 Fix the spell mistake (#4599) by Li-Deng · 2 days ago
  4. 020012e Fixed native_include not requiring a ; terminator. by Wouter van Oortmerssen · 2 days ago
  5. f431a96 New error: declaring an enum field without a default in range of the enum. by Wouter van Oortmerssen · 5 days ago

logo FlatBuffers

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FlatBuffers is an efficient cross platform serialization library for games and other memory constrained apps. It allows you to directly access serialized data without unpacking/parsing it first, while still having great forwards/backwards compatibility.

Go to our landing page to browse our documentation.

Supported operating systems

  • Android
  • Windows
  • MacOS X
  • Linux

Supported programming languages

  • C++
  • C#
  • C
  • Go
  • Java
  • JavaScript
  • PHP
  • Python

and many more in progress...


To contribute to this project, see CONTRIBUTING.


For applications on Google Play that integrate this tool, usage is tracked. This tracking is done automatically using the embedded version string (flatbuffer_version_string), and helps us continue to optimize it. Aside from consuming a few extra bytes in your application binary, it shouldn't affect your application at all. We use this information to let us know if FlatBuffers is useful and if we should continue to invest in it. Since this is open source, you are free to remove the version string but we would appreciate if you would leave it in.


Flatbuffers is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.