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

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

Querystringify - Small, simple but powerful query string parser.

Decode named character references

A better decodeURIComponent

Parse and stringify URL query strings

micromark utility to decode numeric character references

micromark utility to decode markdown strings

Fast base encoding / decoding of any given alphabet

Fast and safe decodeURIComponent

Base 58 encoding / decoding

Encode and decode HTML entities

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

Unpack multibyte binary values from buffers

A port of the Brotli compression algorithm as used in WOFF2

A straightforward implementation of base58-check encoding

Pure JavaScript pprof encoder and decoder

Declaratively encode and decode binary data

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

Bech32 encoding / decoding

Base64 streaming encoder and decoder

Add or remove backslashes (escape or unescape).

Performant JPEG decoder

Declaratively encode and decode binary data

Text Decoder

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

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

Bitcoin Wallet Import Format (WIF) decoding/encoding module

JWT(JSON Web Token) encode and decode module

A library for simplifying encoding and decoding URL query parameters.

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

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

Decodes complex FormData into a JavaScript object

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

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

Reads the pixels of an image as an ndarray

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

Node.js implementation of the Unix program uuencode.

Simple cross Node.js inteface for using brotli compression

LEB128 utilities for Node

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

ZXing for JS's browser layer.

Decode audio data in node or browser

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

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

encode/decode value as bitcoin OP_PUSHDATA integer

Fast base encoding / decoding of any given alphabet

Decode HEIC images to raw data

High performance WAV file decoder and encoder

A light weight universal JavaScript base58 encoder / decoder.

Module for serializing and unserializing SocketCluster messages

Embed data in other data and easily extract it when needed

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

Base32 encoding / decoding of bitcoin cash addresses

Text encoder and decoder

Protocol Buffers for Node.js

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

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

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

A simple HTML encode / decode function for JavaScript.

decode html entities

Tiny, browser-compatible mongo id shortener

PASETO for Node.js with no dependencies

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

promise-based wav decoder

Safely decode URI components, leaving invalid sequences as they are

Encode / decode Google's polyline format

Encoding/Decoding to/from JSON/CBOR/MsgPack

Parse and stringify URL query strings

Blazing-fast binary parser builder

Decode the frames of a gif.

Render a gif and provide frames to draw.

A minimalistic MessagePack encoder and decoder for JavaScript.

A-Law and mu-Law codecs in JavaScript.

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

Type-safe data decoding for the minimalist.

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

Declarative binary data encoder / decoder.

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

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

An AAC decoder for Aurora.js

Convert base64 strings into human-friendly words

encode/decode value as bitcoin OP_PUSHDATA integer

Declarative binary data encoder / decoder.

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

An MP3 decoder for Aurora.js

Blazing-fast binary parser builder

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).

An Apple Lossless decoder for Aurora.js

Reads the pixels of an image as an ndarray

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.

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.

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

Base85 (Ascii85) encode and decode functionality

Hex encode & decode string

Read pixel data from any image source

Decode url

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.

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

A safe Uint8Array to base64 string converter

Node.js native bindings to FFmpeg.

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.

Generate ids from numbers

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

Reads the pixels of an image as an ndarray

Fast function for decoding HTML entities.

JSON encode and decode functions for node-sass.

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

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

Encode or decode base64 strings - including cli

Legacy package to normalize an URI

Decode and verify JWT tokens issued by AWS Cognito.

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

Encode and decode unsigned integers to and from byte buffers.

A port of the Brotli compression algorithm as used in WOFF2

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

Minimal utility for decoding JWT claims

A straightforward implementation of base58-check encoding

Base 58 encoding / decoding

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

Environment agnostic entity decoder

Simple Node Js Package For Encode Decode A Given String

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

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.

IMA ADPCM codec in JavaScript.

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

Base64 encoding and decoding with ASCII string representation.

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

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

Decode unknown values into well-typed Typescript ones

Reads the pixels of an image as an ndarray

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

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

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

Decode audio files using FFmpeg and WebAssembly

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

Encoding/decoding library for the IATA Bar Coded Boarding Pass

Internet Printing Protocol (IPP) encoder and decoder

A minimal yet complete MessagePack implementation for JavaScript

2D motion graphics and video rendering engine

check JWT is expired or not.

decode/encode git style utf8

Blech32 encoding / decoding

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

🖼A full-featured PNG decoder and encoder.

a faster varint

Non-blocking chunked Base64 encoding

parse Pdf417 barcode data from US driver licenses

base64 encode/decode methods in nodejs

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

compressor and decompressor for Brotli

Mini Game Standard Development Library.

A library for lexicographical encoding.

A simple base32hex encode & decode library.

Guess structure of protobuf binary from raw data

Grants safe passage to your domain.

Reads the pixels of an image as an ndarray

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

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

A safe Uint8Array to utf-16 string converter

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

Library for decoding VIN number

Declaratively encode and decode binary data

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

Quite-OK Image format encoder/decoder in vanilla javascript

Encode/decode UTF8.

Base 58 encoding / decoding

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

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.

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

Compression codec for uuid to d64 (22 bytes)

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

Lightweight utility for decoding function parameters from Ethereum transactions.

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

Typescript + ESM version of punycode.js

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

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.

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

A JavaScript library that can convert any kind of data into binary that can be restored

Decode/encode a docker raw stream

Encode/decode hex and base64 at speed

Decode HTML entities the browser-friendly way

Binary data related transducers & reducers

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

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

Nodejs Base 58 encoding / decoding

Base62 encoder/decoder

Fast and simple way to parse and stringify URL query strings

Encode and decode ZPL images

Base64 encoding and decoding for ArrayBuffer

Encrypt and decrypt in Node and Bash

Encode & decode strings, bytes, and integers to Base62

A simple decoder/encoder for morse code written in javascript

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

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

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

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

A simple Base64 encode / decode function for JavaScript supports UTF-8 encoding.

querystringify with typescript

LoRa packet decoder/encoder

Node.js native bindings to FFmpeg.

fast MP4 mux / demux using WASM

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

Blazing-fast binary parser builder

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

Encoder/Decoder of various algorithm

string encode/decode

Command line interface for advanced base 64 encoding/decoding

Convert a buffer to and from png image data.

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

Package for parsing and encoding a plist file

Simplify encoding & decoding CSV

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

NodeJS native bindings to libmp3lame & libmpg123.

A simple email parser

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

A straightforward implementation of base58-check encoding for smartcash

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.

Library for converting numbers from one radix representation (encoding) to another, with optional custom defined encodings. Inspired by rubyworks/radix.

Fast function for decoding HTML entities.

Convert/auto-detection Character encodings in JavaScript ( iconv-lite, jschardet )

Simple XOR and base_64 encryption decryption for react-native

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

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

CLI utility to decode JWTs

Parse and stringify URL query strings

encode/decode value as bitcoin OP_PUSHDATA integer

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.

An abstract-encoding compatible JSON encoder/decoder that properly encodes/decodes buffers.

Decompress with NRV2E algorithm

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

Middleware to transform query strings in a format that is recognized by the MongoDB, MySQL and other databases...

Library for encoding and decoding binary data.

A streaming PNG encoder and decoder

Parse and stringify URL query strings

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

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

🗄️ React hooks for accessing localStorage and sessionStorage, with syncing and prefix support. The complete package.

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

Webpack v4 compatible version of panva/jose v3.x

Decode Polish Vehicle Registration Certificate Aztec 2D barcode data

Decode/encode Tus Upload-Metadata strings

Parse and stringify URL query strings

Library for parsing JSON Web Tokens (JWT)

A HTML encoder/decoder with full Unicode support.

URLVariables class for TypeScript

A zero dependency base64 encoder and decoder for Node.js

A minimal yet powerful wrapper around ffmpeg and ffprobe