JSPM

Small package to encode or decode IP addresses from buffers to strings.

A robust base64 encoder/decoder that is fully compatible with `atob()` and `btoa()`, written in JavaScript.

A pure javascript JPEG encoder and decoder

Snappy codec for KafkaJS

Lightweight tiff decoder

Module for serializing and unserializing SocketCluster messages

Decode audio data in node or browser

Check details of an mp4 file, e.g. to determine if transcoding is required

snappy decompressor for wasm

utf8 to/from bytes codec (esm/cjs)

LZ4 compression codec for the KafkaJS library

A robust windows-1252 encoder/decoder written in JavaScript.

A-Law and mu-Law codecs in JavaScript.

base64 to/from bytes codec (esm/cjs)

A JSON decoding library for Typescript

A robust iso-8859-2 encoder/decoder written in JavaScript.

A robust windows-1255 encoder/decoder written in JavaScript.

A robust iso-8859-8 encoder/decoder written in JavaScript.

Encoding/Decoding to/from JSON/CBOR/MsgPack

A robust iso-8859-15 encoder/decoder written in JavaScript.

A robust windows-1251 encoder/decoder written in JavaScript.

A robust windows-874 encoder/decoder written in JavaScript.

A robust windows-1250 encoder/decoder written in JavaScript.

Ascii85 (a.k.a. base85) encoding/decoding.

Support as many legacy encodings as possible

A robust windows-1258 encoder/decoder written in JavaScript.

A robust iso-8859-7 encoder/decoder written in JavaScript.

A robust iso-8859-6 encoder/decoder written in JavaScript.

A robust macintosh encoder/decoder written in JavaScript.

A robust iso-8859-8-i encoder/decoder written in JavaScript.

A robust windows-1257 encoder/decoder written in JavaScript.

A robust windows-1256 encoder/decoder written in JavaScript.

A robust windows-1253 encoder/decoder written in JavaScript.

A robust iso-8859-3 encoder/decoder written in JavaScript.

Convert and discover properties of CIDs

WebAssembly media player using Ogg/Vorbis/Theora/Opus/WebM libs compiled with Emscripten

Snappy codec for kafkajs in typescript

ucanto core

A robust iso-8859-5 encoder/decoder written in JavaScript.

A robust x-mac-cyrillic encoder/decoder written in JavaScript.

A robust iso-8859-4 encoder/decoder written in JavaScript.

A robust koi8-r encoder/decoder written in JavaScript.

A robust windows-1254 encoder/decoder written in JavaScript.

ucanto transport

UCAN codec for IPLD

MP3 encoder extension for Mediabunny, based on LAME.

Minimalistic yet feature-rich IO decoding and encoding

UCAN RPC Client

LZ4 streaming compression and decompression library for KafkaJS

IMA ADPCM codec in JavaScript.

A library for lexicographical encoding.

FLAC data stream encoder and decoder compiled in JavaScript using emscripten.

A minimal yet complete MessagePack implementation for JavaScript

Encodes and decodes AVIF images using WebAssembly

Oxipng image encoder in WebAssembly

Encode and Decode an XRPL account address and destination tag to/from X-formatted (tagged) address

LZ4 compression codec for the KafkaJS library

Codec to encrypt any javascript value into a JsonWebEncryption (JWE)

Zod <=> Convex integration, supporting Zod 4

Per-feature adapters around Squoosh codecs, worker/client runtimes.

Pure JS Kafka LZ4 codec for kafkajs

adeunis codecs source

MozJPEG image encoder in WebAssembly

Compression codec for uuid to d64 (22 bytes)

Detect audio and video features in browser

Gifsicle codec in WebAssembly.

Tencent silk encoder for Node.js and browser

Convert a webm video to mp4.

Decoder for .bik (Bink) video files.

type-safe base45 encoder and decoder

This plugin for [graphql code generator](https://graphql-code-generator.com) generates types and runtime codecs for a given GraphQL Schema using [io-ts](https://github.com/gcanti/io-ts) to give runtime type safety.

A streaming PNG encoder and decoder

Runtime for compiled result from @scale-codec/definition-compiler

A streaming JPEG encoder and decoder

A pure javascript JPEG encoder and decoder

Minimal binary codec for SC based on MessagePack

'codecs' compatible base32-encode and base32-decode adapter.

Checks if a codec is supported by WebRTC stack in browser

Native G.711 µ-law decoder for Node.js. Optimized C++/N‑API binding for minimal overhead and maximum throughput.

Low-level tools to perform serialization and deserialization via SCALE spec

A library for making type-safe HTTP requests built on the popular Axios client.

A library for defining codecs that can safely translate between runtime and over-the-wire types, helping you build more robust systems in TypeScript.

Canonical Sideband wire contract: branded IDs, protocol constants/error codes, frame + handshake shapes, and binary codec. No I/O, runtime logic, or transport definitions.

A module for statically defining type-safe HTTP operations. These can be leveraged by other modules to build type-safe clients or servers that can execute the requests.

A TypeScript library for typed key-value storage with support for various codecs and storage adapters.

Encode a string into a phonetic code with the Double Metaphone algorithm

Full native ffmpeg bindings for Node.js with Streams support

TENC (Token Efficient Nested Codec) parser, validator, repair, and converters.

Includes parser, serializer & generated typings

Encodes and decodes WebP images using WebAssembly

Incremental I/O; functional parsers and writers; display, debug, and diagnostic formatters; and Unicode and binary codecs

Z85 - ZeroMQ's ascii85 encoding format

Decoding library for Atim products

Msgpack codec for delta-crdts

Useful JS utilities.

Defines base types and interfaces

atproto timestamp identifier identifier codec library

Library for decoding and encoding bencode data

Gifsicle codec in WebAssembly.

An Ogg demuxer for aurora.js

A robust windows-1252 encoder/decoder written in JavaScript.

A robust iso-8859-2 encoder/decoder written in JavaScript.

Spacemesh Transaction Codec library

NACHOS - Not Another CBOR Handling Object System. RFC 8949 CBOR encoder/decoder with full source map support for interactive debugging. Zero dependencies, TypeScript, works in Node.js and browsers.

abstract error class with error code supports to create error class quickly

jsZ85 provides an implementation of the Z85 codec following the specs of https://rfc.zeromq.org/spec/32/. It is a port of the https://github.com/ruben-viscomi/ktZ85 implementation for Kotlin.

Module for serializing and unserializing SocketMesh messages.

AIS Codec for Masohi Codec

Oxipng image encoder in WebAssembly

MozJPEG image encoder in WebAssembly

A base64 implementation compiled to WASM format

Codecs for encoding arbitrary state trees into URL parameters and back again.

encode decode base58 SWTC identifiers

A MozJPEG encoder in WebAssembly

Loads and resizes images using WebAssembly

Common Database for Bajo Framework

Codecs for Masohi Messaging

wav-blob-util is a utility library that converts audio blobs to the Wave format with clamping samples onto the 16-bit resolution.

A Vorbis audio decoder for aurora.js ported using emscripten

Gifsicle codec in WebAssembly.

BigInt base62 codec

Simply serialize discriminated unions into a binary format.

Minimal Protocol Buffers wire encoding/decoding

Universal media converter CLI - Pure TypeScript

Multibase, multicodec, multikey, base64url, and JSON canonicalization utilities for Me Protocol key encoding, DID parsing, and credential serialization.

An ATRAC1 audio codec implementation in JS

Testing audio and video codec support in a browser with or without a key system

XSalsa20 Poly1305 codec that implements the abstract-encoding interface.

MP3 encoder extension for Mediabunny, based on LAME.

A robust iso-8859-10 encoder/decoder written in JavaScript.

An Opus audio decoder for aurora.js ported using emscripten

The abstract codec class to encode/decode buffer/string.

io-ts datetime types with luxon

Blockchain Commons Deterministic CBOR (dCBOR) for TypeScript

Pure TypeScript media codecs - image, video, audio, subtitle

encode decode base58 SWTC identifiers

io-ts types for making parsers

Core types and utilities for @sylphx/codec

Minimal Protocol Buffers wire encoding/decoding

XSalsa20 codec that implements tha abstract-encoding interface.

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ascii - ebcdic conversion module

Real-Time GPU Texture Codecs for the Web

A robust koi8-u encoder/decoder written in JavaScript.

Encoder and Decoder for gitfile streams for js-git.

Get metadata of audio files from disk or URLS

A React Native library for intelligent video processing with native performance. Supports video analysis, quality-preserving format conversion, and smart recompression with customizable settings.

ucanto core

Convert a webm video to mp4.

Utility for encoding and decoding PEM ascii-armoured data streams

Node-API bindings for SpanDSP G.722 (encode/decode) with ESM+CJS loaders.

JavaScript Opus (audio format) Encoder (front-end package only)

A robust ibm866 encoder/decoder written in JavaScript.

Angular directives for HTML5 audio/video media events

A robust iso-8859-13 encoder/decoder written in JavaScript.

A library for decoding JSON in JS

codecs compatible de-/encoder for bigints.

commandline interface for mplayer that manages movie files

Codec errors for JavaScript

A stub for codec such as JsonCodec

silk codec bindings for Node.js

A robust windows-1251 encoder/decoder written in JavaScript.

Encode and decode your Temporal data

A steganographic encoder and decoder built on top of a jpeg library.

LZ4 compression codec for JS.

A tiny, zero-dependency TypeScript validation library. Competitive alternative to Zod with clearer API, solving real pain points like circular validation, codecs, and mixed async/sync validation.

A pkt-line codec packaged as a min-stream push-filter.

X11 Properties Coder / Encoder

A protocol-based binary codec that can encode and decode objects, strings, and numbers to and from binary format

LoRaWAN Codec API compliant codec for BresserWeatherSensorLW

Base16 encoder/decoder for JavaScript

Compression codec for uuid to base91 in less than 20 bytes

Agence Javascript Library

Runtime codec implementation for ZenithKernel framework

ASCII encoder/decoder for JavaScript

A video codec, designed to be used in: 1. Video conferencing systems (like Skype, Google Meet, Zoom, etc.) 2. Streaming services (Twitch, YouTube)

Okaily-Srivastava-Tbakhi (OST) encoding algorithm for textual data compression, optimized for JavaScript/TypeScript and ZenithKernel bundles

Decode audio data in node or browser

Node-RED node for adeunis-codecs v1.7.x library

'probably' => 2, 'maybe' => 1, '' => 0

A picture is worth a thousand words... Literally! Encoding and transfer data through images

A robust windows-1251 encoder/decoder written in JavaScript.

Check if the given audio format is supported on the browser, and return the compatibility level as a number

intel HEX format codec

A streaming JPEG encoder and decoder

Simple config handling for app or module

A pure javascript JPEG encoder and decoder

FLAC data stream encoder and decoder compiled in JavaScript using emscripten.

ipfs protobuf codec

For checking video codecs and then use in video.canPlayType()

String serialization of arbitrarily complex structures that sort bytewise.

Read and Write Life-Like Cellular Automata Files

ucanto transport

pipe segment codec

A comprehensive, type-safe data encoding, serialization, and utility library for JavaScript and TypeScript

Simple ffmpeg API for nodejs

A `zstandard` codec for `avsc`

Remove a codec from a Session Description.

A robust iso-8859-16 encoder/decoder written in JavaScript.

Z85 encoding/decoding

Zero dependencies, small, fast, vanilla TypeScript object serializer with very compact binary format that is also quite compressible via lz4 and deflate

Bindings for Valve's LZSS compression codec

An alternative encoding/decoding scheme for IOTA trytes supporting UTF-8 and JSON

TypeScript library offering robust contracts for encoding and decoding values with strong type safety.

A robust iso-8859-14 encoder/decoder written in JavaScript.

NMEA Decoder/Encoder

Cartesi Machine Input/Output Codec

A JavaScript implementation of the 8b10b line codec

Download a Chromium all-codecs+ woolyss binary

A pure javascript JPEG encoder and decoder

Codecs for purescript argonaut

UCAN RPC Client

JSend utility codecs for use with the io-ts library

A simple CLI tool to get a video's MIME string including relevant codes for use with MediaSource Extension.

Self-Delimiting Numeric Value Codec

Encode and decode big endian unsigned 64-bit integers from and to ByteArrays

Oxipng image encoder in WebAssembly

MozJPEG image encoder in WebAssembly

Micropackage: convert between a NodeJS Buffer and a base64-encoded string with optional URL-safe alphabet, padding, and MultiBase prefix.

Module for serializing and deserializing Zation messages

Utils functions for Thrift TypeScript

Return Chrome bin path or download a Chromium all-codecs+ woolyss binary

Convert between JavaScript UCS-2-encoded strings and OCaml-friendly UTF-8 byte-arrays

'codecs' compatible msgpack adapter.

Protocol Buffers codec implementation for @veksa/transport messaging layer

Download a Chromium all-codecs+ woolyss binary

Gifsicle codec in WebAssembly.

A varint implementation compiled to WASM format

A base85 codec node for NodeRed

High-throughput JPEG 2000 (Rec. ITU-T T.814 | ISO/IEC 15444-15) decoder

A git http platform implementation that sits on top of a tcp connection

Transform arbitrary object structures (json superset) in to JsonML/PigeonMark and back again, allowing arbitrary data to be passed through XML tools

TypeScript implementation of the JAM codec

A varint implementation compiled to WASM format

Kim is a very simple encoding that delivers 7 bits per byte

this package uses android media codec api (android only) to transcode videos with hardware accleration

Msgpack codec for delta-crdts

Check if a Buffer/Uint8Array is an OPUS audio file

[](https://www.npmjs.com/package/lavalink-track-codec) [](LICENSE) [![TypeScript](https://img.shields.io/badge/Typ

Axon msgpack codec

A Fastify plugin that serves a Temporal.io PayloadCodec over HTTP.

An interface for (de)encoding a wide range of multicodecs simultaneously

UCAN RPC

A collection of io-ts codecs for the immutable collections from immutable-js

add the encoding ability to abstract-nosql database.

A robust windows-1251 encoder/decoder written in JavaScript.

encodes/decodes base58 Bizain identifiers

Encode stream data as SDNVs.

YouTube Audio Downloader

CLI to encode/decode common formats such as JWT, Base64, Hex, ASCII, Binary