The fastest JavaScript BPE Tokenizer Encoder Decoder for OpenAI's GPT models (o1, o3, o4, gpt-4o, gpt-4, etc.). Port of OpenAI's tiktoken with additional features.

一个 TypeScript 实现的高性能媒体库，支持 WebCodecs 和 Wasm。 A high-performance media library implemented in TypeScript, support WebCodecs and Wasm.

Download images from remote URLs or use local images and encode/decode them to Base64 string or Buffer object

🤘Tool for decoding qrcode by image,video or camera.

A library to transform any EVM transaction into a human-readable format

Create, sign & decode Solana transactions with minimum deps

Type safe JSON decoder for TypeScript

🖼A full-featured PNG decoder and encoder.

Pure JavaScript toolkit for data URLs (MessagePack, Base58 and Base62)

🚀 JavaScript MP4 Codec.

🧬 Tiny typed data decoder—get to the DNA of your data

A quick online tool to abi-encode and abi-decode constructor arguments used in ethereum's solidity. https://adibas03.github.io/online-ethereum-abi-encoder-decoder/

Acronym Decoder

Promise based streaming tokenizer

Excellent ECMAScript MessagePack implementation for 85% of people.

An easy to use encoder and decoder for the NBT format

extract the first frame in GIF without reading whole bytes, support both browser and nodejs 📸

🖼️ Manipulate GIFs easily using node-canvas!

A library ensuring type safety when decoding JSON data inspired by Elm

Simple package that implements Avro encoding and decoding with a schema-registry