JSPM

JWA, JWS, JWE, JWT, JWK, JWKS for Node.js, Browser, Cloudflare Workers, Deno, Bun, and other Web-interoperable runtimes

fast and safe way to escape and unescape &<>'" chars

Decode named character references

Querystringify - Small, simple but powerful query string parser.

A robust HTML entities encoder/decoder with full Unicode support.

micromark utility to decode numeric character references

A better decodeURIComponent

micromark utility to decode markdown strings

Parse and stringify URL query strings

Fast base encoding / decoding of any given alphabet

Text Decoder

Fast and safe decodeURIComponent

protobuf-style varint bytes - use msb to create integer values of varying sizes

A port of the Brotli compression algorithm as used in WOFF2

Declaratively encode and decode binary data

Unpack multibyte binary values from buffers

Base 58 encoding / decoding

Encode and decode HTML entities

Pure JavaScript pprof encoder and decoder

A straightforward implementation of base58-check encoding

A fast Base64 decoder with a low level API. If you want a high level API, look at [base64-js](https://github.com/beatgammit/base64-js).

Encode/decode DNS-SD TXT record RDATA fields

Base64 streaming encoder and decoder

Bech32 encoding / decoding

Performant JPEG decoder

Encode & decode strings, bytes, and integers to Base62

Declaratively encode and decode binary data

Contains new Node.js v0.10 style stream classes for encoding / decoding Base64 data

Bitcoin Wallet Import Format (WIF) decoding/encoding module

Convert raw escape sequences to their respective characters (undo String.raw).

Add or remove backslashes (escape or unescape).

LEB128 utilities for Node

node.js library for encoding, decoding, and verifying JSON Web Tokens (JWTs)

TypeScript port of ZXing multi-format 1D/2D barcode image processing library.

A library for simplifying encoding and decoding URL query parameters.

Embed data in other data and easily extract it when needed

A simple Base32 encode / decode function for JavaScript supports UTF-8 encoding.

Decodes complex FormData into a JavaScript object

JWT(JSON Web Token) encode and decode module

Decode HEIC images to raw data

A robust & character encoding–agnostic JavaScript implementation of the `Quoted-Printable` content transfer encoding as defined by RFC 2045.

Decode audio data in node or browser

ZXing for JS's browser layer.

Node.js implementation of the Unix program uuencode.

Generate YouTube-like ids from numbers. Use Hashids when you do not want to expose your database ids to the user.

encode/decode value as bitcoin OP_PUSHDATA integer

High performance WAV file decoder and encoder

Wrapped version of http://www.strictly-software.com/htmlencode

Reads the pixels of an image as an ndarray

Base64 encoding and decoding helping util. Created for React Native but can be used anywhere

Entity parser for XML, HTML, External entites with security and NCR control

Fast base encoding / decoding of any given alphabet

Pruned version of the 'get-pixels' package by Mikola Lysenko (only node.js and local fs files)

Simple cross Node.js inteface for using brotli compression

Parse and stringify file paths with line and column like `unicorn.js:8:14`

A light weight universal JavaScript base58 encoder / decoder.

Module for serializing and unserializing SocketCluster messages

Base32 encoding / decoding of bitcoin cash addresses

Create, read and write wav files according to the specs.

string contains methods that aren't included in the vanilla JavaScript string such as escaping html, decoding html entities, stripping tags, etc.

Protocol Buffers for Node.js

Library for encoding ECDSA private keys to PEM, DER and raw hex formats

Type-safe data decoding and encoding for the minimalist.

decode html entities

PASETO for Node.js with no dependencies

Encode / decode Google's polyline format

A-Law and mu-Law codecs in JavaScript.

promise-based wav decoder

Arbitrary base-n conversions w/ presets for base8/16/32/36/58/62/64/83/85, support for bigints and encoding/decoding of byte arrays

A safe Uint8Array to base64 string converter

A library for lexicographical encoding.

Declarative binary data encoder / decoder.

Text encoder and decoder

A simple HTML encode / decode function for JavaScript.

Decode the frames of a gif.

Render a gif and provide frames to draw.

Encode and decode [WTF-8](https://simonsapin.github.io/wtf-8/) with a similar API to [TextEncoder](https://developer.mozilla.org/en-US/docs/Web/API/TextEncoder) and [TextDecoder](https://developer.mozilla.org/en-US/docs/Web/API/TextDecoder).

A compilation of the libraries associated with handling audio and video in ffmpeg—libavformat, libavcodec, libavfilter, libavutil and libswresample—for WebAssembly and asm.js, and thus the web. This package includes only the types.

Blazing-fast binary parser builder

Nodejs and Javascript library for decoding data params and events from ethereum transactions"

A modern base-x encoding library implemented in TypeScript with minimal dependencies for use in browser and Node.js.

A compilation of the libraries associated with handling audio and video in ffmpeg—libavformat, libavcodec, libavfilter, libavutil and libswresample—for WebAssembly and asm.js, and thus the web. This package includes only one variant.

Encoding/Decoding to/from JSON/CBOR/MsgPack

Declarative binary data encoder / decoder.

node.js library for encoding, decoding, and verifying JSON Web Tokens (JWTs)

Parse and stringify URL query strings

Tiny, browser-compatible mongo id shortener

Safely decode URI components, leaving invalid sequences as they are

A compilation of the libraries associated with handling audio and video in ffmpeg—libavformat, libavcodec, libavfilter, libavutil and libswresample—for WebAssembly and asm.js, and thus the web.

A module to encode and decode IEEE 754 floating point numbers.

btoa and atob (ie base64/base64url encoding and decoding) support for node.js or old browsers, with the Unicode Problems fixed

Yet another node.js struct implementation (object↔︎buffer conversion)

Reads the pixels of an image as an ndarray

Reads the pixels of an image as an ndarray

Convert base64 strings into human-friendly words

Base58 encoding & decoding for Node.js & web agent windows.

Snowflake ID is a unique identifier commonly used in distributed systems to generate unique IDs with a timestamp component. It is designed to ensure uniqueness, even in distributed and highly concurrent environments.

Parse and stringify URL query strings - this version is transpiled with babel, and minor manual changes regarding dependecy package for es5 compability.

Base85 (Ascii85) encode and decode functionality

Download images from remote URLs and encode/decode them to base64

Encoding/decoding library for the IATA Bar Coded Boarding Pass

Simple, functional big number library for up to 256-bit (32-byte) numbers that outputs decimal strings, with hex, binary, octal, and Buffer decoding/encoding.

An AAC decoder for Aurora.js

Store state in URL as in object, types and structure are preserved, with TS validation. Same API as React.useState, wthout any hasssle or boilerplate. Next.js@14-15, react-router@6-7, and remix@2.

Environment agnostic entity decoder

Quite-OK Image format encoder/decoder in vanilla javascript

Base64 encoding and decoding for ArrayBuffer

Encode and decode unsigned integers to and from byte buffers.

An Apple Lossless decoder for Aurora.js

A minimalistic MessagePack encoder and decoder for JavaScript.

An MP3 decoder for Aurora.js

Fast function for decoding HTML entities.

IMA ADPCM codec in JavaScript.

JSON encode and decode functions for node-sass.

Blazing-fast binary parser builder

Read pixel data from any image source

Node.js native bindings to FFmpeg.

Typescript + ESM version of punycode.js

encode/decode value as bitcoin OP_PUSHDATA integer

Convert Base64 to Blob/File and Blob/File to Base64.

Blech32 encoding / decoding

Encode or decode base64 strings - including cli

Encode and decode two's complement integers to and from byte buffers.

Decode unknown values into well-typed Typescript ones

Guess structure of protobuf binary from raw data

Encodes a number to a letter representation, or decodes it back

Decode, sign/resign or verify JSON Web Tokens (JWT). Works in majority of modern browsers, Node.js and other JavaScript runtimes.

Decode url

Legacy package to normalize an URI

Check to see if a token is expired using only the token itself without a secret key or validation

Lightweight Pure JS character encoding conversion for CP932, Shift_JIS, Windows-31J, IBM 932

A C++ module for node-js that does base64 encoding and decoding.

Blazing-fast binary parser builder

fast MP4 mux / demux using WASM

Base 58 encoding / decoding

A basic library for working with Tapscript, signatures and Bitcoin transactions.

A straightforward implementation of base58-check encoding

A minimalistic NEAT (MessagePack based) encoder and decoder for JavaScript.

Hex encode & decode string

Simple Node Js Package For Encode Decode A Given String

A compilation of the libraries associated with handling audio and video in ffmpeg—libavformat, libavcodec, libavfilter, libavutil and libswresample—for WebAssembly and asm.js, and thus the web. This package includes only one variant.

Generate ids from numbers

A tiny function for decoding base64 strings into Uint8Arrays, useful for bundling and loading WASM modules.

compressor and decompressor for Brotli

A minimal yet complete MessagePack implementation for JavaScript

A library to decode google map polyline using google official library.

Encode and decode firebase key string to escape and unescape unsafe characters (.$[]#/).

Minimal utility for decoding JWT claims

A compilation of the libraries associated with handling audio and video in ffmpeg—libavformat, libavcodec, libavfilter, libavutil and libswresample—for WebAssembly and asm.js, and thus the web. This package includes only one variant.

Base64 encoding and decoding with ASCII string representation.

The Cyber Swiss Army Knife for encryption, encoding, compression and data analysis.

Encodes text and binary data to a subset of Unicode plane 1 (BMP). Runs in browser and Node.js. Character compression. Makes binary data copy-pastable. URL-safe.

BitTorrent bencoding and decoding library for Node.js

Decode and verify JWT tokens issued by AWS Cognito.

A robust & character encoding–agnostic JavaScript implementation of the `Q` encoding as defined by RFC 2047.

Internet Printing Protocol (IPP) encoder and decoder

A compilation of the libraries associated with handling audio and video in ffmpeg—libavformat, libavcodec, libavfilter, libavutil and libswresample—for WebAssembly and asm.js, and thus the web. This package includes only one variant.

🖼A full-featured PNG decoder and encoder.

Library for decoding VIN number

base64 encode/decode methods in nodejs

Decode audio files using FFmpeg and WebAssembly

check JWT is expired or not.

Drop-in replacement for AudioContext. Overrides decodeAudioData and provides Ogg Vorbis decoding, calling super.decodeAudioData for non-vorbis.

A robust HTML entities encoder/decoder with full Unicode support.

Encode and decode ZPL images

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

Ultra-lightweight PNG steganography with native Rust acceleration. Encode binary data into PNG images with zstd compression.

Base62 encoder/decoder

Package for encoding / decoding images, transforming images, applying filters, drawing primitives on images on the client side (no need for server Node.js)

A modern base58-check encoding library implemented in TypeScript with minimal dependencies for use in browser and Node.js.

Declaratively encode and decode binary data

Brotli compression/decompression that encodes to base-unicode and back. Node.js and Browser support.

Lightweight utility for decoding function parameters from Ethereum transactions.

parse Pdf417 barcode data from US driver licenses

Binary data related transducers & reducers

Convert react-router-dom this.props.location.search string to an object

Encode/decode to a custom binary format, much more compact and faster than JSON/BSON

A library to encode and decode JSON into entity classes

A simple base32hex encode & decode library.

A library for handling strings in smart ways, including manipulation and encoding, with TypeScript support.

Decode audio files using FFmpeg and WebAssembly

Play/Stream/Record PCM audio data & Encode/Decode Opus to PCM audio data

A straightforward implementation of base58-check encoding

Bitcoin Wallet Import Format (WIF) encoding/decoding module

Reads the pixels of an image as an ndarray

Non-blocking chunked Base64 encoding

Decode HTML entities the browser-friendly way

Base64 encoding and decoding for both browser and node, with binary file support.

Simple XOR and base_64 encryption decryption for react-native

Encode/decode UTF8.

Encode and decode data to string using mustache-like template strings

A robust & character encoding–agnostic JavaScript implementation of the `Q` encoding as defined by RFC 2047.

NodeJS native bindings to libmp3lame & libmpg123.

Grants safe passage to your domain.

Reads the pixels of an image as an ndarray

Fast and simple way to parse and stringify URL query strings

Z-order curve / Morton encoding, decoding & range extraction for arbitrary dimensions

Encoder/Decoder of various algorithm

Compression codec for uuid to d64 (22 bytes)

A safe Uint8Array to utf-16 string converter

Decode WAV audio to PCM samples

URLVariables class for TypeScript

A tool for generating short ids like Youtube, Bitly and Imgur

*I deal with the goddamn objects so JSON doesn’t have to!! I have object skills!!*

A general purpose CAN (Controller Area Network) toolbox with support for .dbc file parsing, CAN message decoding, and more

Convert Buffers to/from PEM strings, and read/write SSH/RSA key files. supports DEK encryption.

Encode your objects into simple string hashes that you can then pass around. Then decode them back with ease.

A streaming PNG encoder and decoder

A straightforward implementation of base58-check encoding for smartcash

Parse and stringify URL query strings

The library converts a buffer containing a XML serialized to a string, detecting the proper encoding

Glitched, text writing module. Highly customizable settings. Decoding, decrypting, scrambling, or simply spelling out text.

Nodejs Base 58 encoding / decoding

Decode WAV audio to PCM samples

Decode/encode a docker raw stream

Decode Polish Vehicle Registration Certificate Aztec 2D barcode data

Decompress with NRV2E algorithm

Encode / decode any base X to and from string or buffer

Vue.js Single File Component. Wrapper for Glitched Writer: text-writing js module.

Parse and stringify URL query strings

Nodejs and Typescript library for decoding data params and events from ethereum transactions

Caching Loader (with optional decode) audio files to be used with WebAudio

Decode AMR-NB/WB audio via opencore-amr WASM

It's exactly like html-escaper but it doesn't throw with null/undefined

Node.js native bindings to FFmpeg.

Base 58 encoding / decoding

LoRa packet decoder/encoder

Simple encoder and decoder for the United States Postal Service (USPS) Intelligent Mail Barcode (IMB) service.

Library for encoding and decoding binary data.

Decode WebM audio (Opus, Vorbis) to PCM samples

Decode WMA audio via RockBox WASM

A wrapper around the built-in `crypto` module that makes encryption easy in Node.js.

Decode AIFF/AIFF-C audio to PCM samples

Decode CAF (Core Audio Format) audio to PCM samples

A straightforward implementation of base58-check encoding

Smaller than base64, only use ASCII, can run in web browser.

TypeScript Brotli encoder and decoder

Decode Yodl payment hashes into structured payment data

A simple decoder/encoder for morse code written in javascript

A TypeScript library to deserialize Tron transactions.

Simplify encoding & decoding CSV

Decode AAC/M4A audio via FAAD2 WASM

encode/decode value as bitcoin OP_PUSHDATA integer

A simple email parser

Encode/decode hex and base64 at speed

NodeJS native bindings to libmp3lame & libmpg123.

Package for parsing and encoding a plist file

Fast and efficient number conversion library for arbitrary radix 64 alphabets.

a faster varint

This package was developed to enable programmers to encode and decode messages using a numerical cipher method.