Lite³ is a binary serialization format that encodes data as a B-tree in a single buffer, allowing for direct access and modification without traditional parsing. It is schemaless, self-describing, and outperforms many existing formats in speed and efficiency. The library is minimalistic and offers both a Buffer API and a more user-friendly Context API for ease of use.

JSON is no longer the fastest option for data serialization in web browsers, as recent benchmarks show that binary formats like Avro, Protobuf, and Bebop can outperform it. Factors such as improved internet speeds, the complexity of web applications, and user demand for responsiveness make deserialization performance increasingly important. After testing various libraries, the author concludes that while some binary encodings have advantages, careful consideration of benchmarks and use cases is crucial for selecting the right option.