JSPM

Modern image optimizations & manipulations.

Fastest Snappy compression library in Node.js

Pure JS Kafka LZ4 codec for kafkajs

PostCSS plugin to minify CSS with clean-css

A GraphQL response deduplicator. Removes duplicate entities from the GraphQL response.

Lightweight polyfill/ponyfill for the Compression Streams API

Lempel-Ziv-Welch (LZW) compression algorithm

snappy compression/decompression for browsers and Node.js, powered by WebAssembly

ZSTD (Zstandard) decoder for Web and Node.js, using WebAssembly

Rust-native parallel compression plugin for Rspack. Drop-in replacement for compression-webpack-plugin with gzip, brotli, deflate, and deflateRaw — all parallelized across CPU cores via Rust + rayon.

Image processing library

immutable.js transform for redux-persist

High Performance lz4 wasm implementation

Create tarball from files

Apple Data Compression (ADC) Scheme

Rust-native parallel compression plugin for Rspack. Drop-in replacement for compression-webpack-plugin with gzip, brotli, deflate, and deflateRaw — all parallelized across CPU cores via Rust + rayon.

Compression driver for unstorage

Image processing library

Rust-native parallel compression plugin for Rspack. Drop-in replacement for compression-webpack-plugin with gzip, brotli, deflate, and deflateRaw — all parallelized across CPU cores via Rust + rayon.

Compressing images using the ASTC texture compression standard.

Image processing library

Compressing images using the Basis Universal Supercompressed GPU Texture Codec.

Tiny string compression module for Node.

Compressing images using the BC1 (DXT1), BC2 (DXT3), BC3 (DXT5), BC4, BC5 & BC7 texture compression standard.

Binary run-length encoding packer w/ flexible repeat bit widths and a naive RLE encoder/decoder for arrays of arbitrary typed values

API and CLI for compressing images using the ASTC, ETC, ETC2, BCn (DXTn) and BASIS texture compression standard.

Compressing images using the ETC & ETC2 texture compression standard.

LZ4 streaming compression and decompression library for KafkaJS

Zstd wrapper for Nodejs 14 and above

Image processing library

An NPM package for adding post build compression to a create-react-app builds

Runs gzip and brotli compression on static assets during Nuxt build

Fossil SCM delta compression

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

Node.js addon for native Zstandard encoding and decoding with support for dictionaries.

Image processing library

A serverless plugin to enable [Content Encoding feature in API Gateway](https://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-gzip-compression-decompression.html) for lambda function response compression.

TypeScript port of the smaz string compression library

Node.js addon for native Zstandard encoding and decoding with support for dictionaries.

JavaScript API for Light & ZK Compression

Gzipme is a module and CLI tool to compress files to gzip

Node.js addon for native Zstandard encoding and decoding with support for dictionaries.

LZ-based compression algorithm

A KafkaJS codec for ZStandard compression

compress your redux state

PNG optimizer, similar to optipng

WebAssembly port of Deflate, Gzip, and Zlib compression algorithms

Node.js addon for native Zstandard encoding and decoding with support for dictionaries.

Pi Coding Agent extension — routes bash/read/grep/find/ls through lean-ctx for strong token savings. The embedded MCP bridge (on by default) adds a persistent session cache so unchanged re-reads cost ~13 tokens.

Node.js addon for native Zstandard encoding and decoding with support for dictionaries.

Rollup plugin to minify HTML template literal strings

Node.js addon for native Zstandard encoding and decoding with support for dictionaries.

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.

Minify size your images. Image compression with extension: jpg/jpeg, svg, png, gif.

pure JavaScript LZMA de/compression, for node.js, volo, and the browser.

Node.js addon for native Zstandard encoding and decoding with support for dictionaries.

Node.js addon for native Zstandard encoding and decoding with support for dictionaries.

express middleware to simulate fastly cdn

Compress all assets and embeds them into dist/index.html, making it convenient to share as a single HTML file.

JS client to interact with the compressed-token program

Middleware for compressing HTTP responses

Compress middleware for koa that always compresses

Image processing library

Primitives and SDK for LLM agent content workflows: compression, patching, progressive disclosure, signed URLs, collaborative document lifecycle, and retrieval planning

A free Capacitor plugin for zipping and unzipping files on iOS, Android, and Web.

Image processing library

A JavaScript library for compressing and decompressing strings using an original algorithm based on the LZ algorithm

npm for enhanced folder zipping

W3C Compression Streams API for GJS

Bytefold-backed archive orchestration for directories/files across Node.js, Deno, and Bun.

A Rollup plugin for minifying JavaScript bundles using Terser

gzip-cli provides CLI for compressing files by using compress algorithms such as Gzip and Brotli

compressor and decompressor for Brotli

Image processing library

Image processing library

Prepare compressed versions of assets to serve them with Content-Encoding

Image processing library

[Fork of pierrec/node-lz4] LZ4 streaming compression and decompression

Simple, clean PDF compression library with excellent DX

Image processing library

shrink json objects with LZMA (7-zip) or Brotli compression + jsonpack

snappy compression/decompression for Node.js, powered by WebAssembly

LZ-based compression algorithm for TypeScript projects (Browser, Node.js)

Choose the best compression encoding

Smash your images down to size.

A base64 encoder/decoder with gzip or deflate abilities

LZ4 compression codec for the KafkaJS library

Precompress files to gzip and brotli and serve them automatically

Gzip middleware for Connect using the native zlib library in node >= 0.6

LZF compression/decompression in pure JS

Express middlewares to compress/decompress response with encoding: brotli, gzip and deflate

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

npm interface for JSZip

pure JavaScript de/compression (bzip2, etc) for node.js, volo, and the browser.

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

This module contains some nice addons for the @leanup/cli.

A JavaScript implementation of the Lempel-Ziv-Markov (LZMA) chain compression algorithm, ready to be used as an ES6 package

Simple gzip compression and decompression library for Node.js

MessagePack with compression

Reduce compressed binary size by ~24% by zeroing unused ICU data entries

Bucklescript bindings for Compression middlewaare

Package implements string compression algorithms

Compressor universal pra agentes IA — Claude Code, Cursor, OpenClaw, Hermes. Camada invisível via MCP + Hook PreToolUse. Economiza 50-90% dos tokens.

Compression module for Nuxt 3

Compression plugin for Hono working with Bun

Cross-agent persistent memory with compressed storage. Plug-and-play memory for Claude Code, Gemini CLI, OpenCode, Codex, and Cursor.

LZ77(LZSS) based compression algorithm in base62 for JavaScript

smosh [](https://travis-ci.org/heldr/smosh) =====

LZ77

Huffman code

PostCSS plugin to minify CSS with clean-css

minimal express app configuration

A CBOR-LD encoder/decoder for Javascript.

Zip / Unzip

Hardware-accelerated image & video compression for React Native / Expo. H.264 & HEVC encoding via MediaCodec and VideoToolbox. No FFmpeg, no config plugins — just install and compress.

bctx — context-aware execution runtime for LLM coding agents. Pre-built binary, no Rust required.

Fastest Snappy compression library in Node.js

URL-safe LZMA compression

StegCloak is a pure JavaScript steganography module designed in functional programming style, to hide text in plain sight - with key features like encryption and top-notch text compression. It can be used in social media or for any other covert communicat

pure JavaScript LZMA de/compression, for node.js, volo, and the browser.

An Astro integration that minifies HTML

Compression plugin for Elysia

Automate ImageOptim, ImageAlpha, and JPEGmini

Deterministic OpenCode message compression with per-session saved-character stats and a TUI indicator.

Node.js compression middleware with brotli and zopfli support

Node.js compression middleware with brotli and zopfli support

Hook-based token compressor for Claude Code, Copilot CLI, and OpenCode. Compresses bash output up to 95%, collapses redundant calls, injects caveman persona.

LZ-based compression algorithm for JavaScript with ESM support

similar to jsonfile, but with automatic jsonpack + lzma (7zip) compression+decompression

Gzip compression and decompression

Adds compression to h3 request (brotli, gzip, deflate)

Token compression plugin for OpenCode AI — multi-layer filtering, semantic compression, and dynamic context pruning.

Elysia Compression that supports Brotli, GZIP, and Deflate compression

Adds compression bindings for your Keyv instance, saving as much space as you can.

Highly configurable t-SNE implementation for arbitrary dimensions

ZON: The most token-efficient serialization format for LLMs - beats CSV, TOON, JSON, and all competitors

a fast integer compression library in JavaScript

Recursively minify all JavaScript files.

Tiny and fast string compression library with Unicode support

Client-to-server compression (viem-compatible) module for compressed, gas-efficient, low-latency eth_call requests.

Compression middleware for CelsianJS

Stream-based CLI that trims noisy server logs, build pipelines, vulnerability scanners, and container workloads down to the diagnostic context LLM agents actually need.

A JavaScript implementation of the Lempel-Ziv-Markov (LZMA) chain compression algorithm

Compound File Binary File Format extractor

A Vite plugin for compressing and converting images to WebP format during the build process.

Pure TypeScript zstd compression library

🔬 Reliable, Cross-Platform Compression & Decompression for Web, Node.js, Deno, Bun and Cloudflare Workers

AI SDK middleware for context-chef. Transparent history compression, tool result truncation, and token budget management.

Javascript port of the squish DXT compression/decompression library using emscripten

A TypeScript-based project for easy serving of static files with support for live reloading, compression, and typed requests.

Context compiler for TypeScript/JavaScript AI agents. Automatically compiles agent state into optimized LLM payloads with history compression, tool pruning, multi-provider support, and more.

轻量级对象数组压缩工具

A client-side JavaScript tool that takes in a `File` of type `.jpeg`, `.png`, or `.gif` and returns a compressed `File` of type `.jpeg`.

Compresses AI conversation history into ~300 tokens. Zero dependencies. Bring your own storage and AI.

Per-message DEFLATE compression extension for WebSocket connections, with threshold!

Intelligent context window optimization for Claude Code - store content externally via caching and compression, freeing up your context window for what matters

TypeScript Brotli encoder and decoder

TypeScript SDK for Compresr - Intelligent context compression to reduce LLM API costs by 30-70%

TanStack AI middleware for context-chef. Transparent history compression, tool result truncation, and token budget management.

Compression for browser localStorage

Browser image compression library for JavaScript and TypeScript.

Zstd binding for Nodejs, with TypeScript support.

generic module to handle different types of compression

Binary data range encoder / decoder

KORE - Killer Optimized Record Exchange: 50x faster than Parquet, 10x smaller than JSON

Pure javascript tarball tools for Node.js

Recursively compile all SCSS files into minified CSS

Keep your AI agent context small and cheap by managing tool bloat and large outputs.

Handy command line tool for shrinking PNG images using the TinyPNG API

LOON (LLM-Optimized Object Notation) — Token-efficient serialization for LLM pipelines. JSON/CSV/XML/YAML/trees → LOON with up to ~78% token reduction, lossless round-trip.

Content-aware, device-adaptive image optimizer for React. Works with Vite and Next.js. Auto-converts to AVIF/WebP/JPEG with SSIM auto-tune, face detection, SVGO, and device-tier delivery. Built by @ezitounioussama at gotodev.ma.

LZ4 compression codec for JS.

To resize or compress image file by weight and height. Image compression with extension: jpg/jpeg, svg, png, gif.

Node.js compression middleware

Presidium WebSocket client and server

dictionary-compression helper for zxcvbn-ts language packages

OpenCode plugin — injects caveman compression rules every turn, survives /compact, supports live mode switching

build with [zstd-rs](https://github.com/gyscos/zstd-rs)

High performance (de)compression in an 8kB package

Zero-copy Tor protocol for the web

Configura Express con CORS, compresión, minificación, timeout, cookie-parser, Pug y utilidades para APIs REST con respuestas estandarizadas

In-memory column store database with customizable column types, extensible query engine with support for nested queries, bitfield indexing for query acceleration, JSON serialization with optional RLE compression

Node.js fs next-gen extra (nextra) methods.

A CBOR-LD encoder/decoder for Javascript.

Compress AI conversation history into structured facts optimised for prompt re-injection. Provider-agnostic, zero infrastructure, drop-in replacement for truncation.

Razzle plugin to Compress bundle

Ali Mesh Compression & Ant Man Comprssion

A library to compactly encode data which can be used in URL.

Minimal HTTP server with declarative routing, static file serving and freely extensible via pre/post interceptors

TypeScript library built for Node backends to create ZIP files with password protection

Elysia compression plugin

Universal context intelligence layer — compresses LLM context across CLI, MCP, browser, and IDE

An extremely lightweight HTTP request client for the command-line. Supports: http, https, proxy, redirects, cookies, content-encoding, multipart/form-data, multi-threading, recursive website crawling and mirroring.

Angular wrapper for lz-string, an LZ-based compression algorithm

Zero-copy HTTP protocol for the web

Fastify compression utils

This Gulp plugin prints space savings for any Gulp compression plugin, such as gulp-uglify, gulp-clean-css, etc. Space savings is the reduction in size relative to the uncompressed size.

Real-Time GPU Texture Codecs for the Web

Wavelet-based signal compression

A JavaScript implementation of the QFS compression and decompression algorithm

A collection of Vite plugins for optimizing JavaScript and assets for the js13kGames competition.

Web configuration for Vite using Typescript

Bit-level JSON encoder + delta-chain protocol (weavepack-json reference implementation). Smaller than MessagePack/CBOR for structured/repetitive JSON; ships per-payload-addressable chains for storing edit histories.

Zstd n-api addon for node.js & wasm for browsers.

Pre-compressed in-memory static file serving for Astro — save space, serve from hyperspace

Astro Fastify integration for Node.js

A Capacitor plugin for zip/unzip operations

Fast context extractor for AI coding. No install needed: npx @spahmonk/ctx-lite

XiT / 吸T神功: AI CLI command-output compression, raw_log evidence, and Kimi integration.

n8n custom node to compress images using sharp

A client for fetching stock data from the Tehran Stock Exchange (TSETMC). Works in Browser, Node and as CLI.

A webpack loader that removes comments and excess whitespace and then inlines the resource into the bundle

Efficient ID compression for LLM prompts in JS/TS/Node. Reduce token usage by up to 90%. UUID, ULID, regex

Vercel AI SDK middleware for prompt-identifiers. Efficient ID compression for token optimization.

LZ-based (unsafe) compression algorithm

compression plugins for h5wasm

Compress pdf files right in browser

AI proxy that compresses Claude Code, Claude Desktop, Codex, Codex Desktop, Aider, Gemini CLI and Ollama context windows to save thousands of tokens per session

WebAssembly audio converter for the flo™ audio format

Module for compressing strings using the browsers built in gzip zipping functionality.

Basic TIFF image format support for @thi.ng/pixel

Vite plugin for GLTF/GLB optimization during build using gltf-transform

Zstd (Zstandard) binding for Nodejs, with TypeScript, AMD64 & ARM64 support.

LZ-based compression algorithm

A lightweight high-performance string compression library

A high-performance zip archive library for Bun with native C bindings

Compresses image streams using pngquant and mozjpeg

Number to ancii or utf string packing and vise-versa.

An extremely lightweight HTTP request client. Supports: http, https, redirects, cookies, content-encoding, multipart/form-data. Returns: Promise.

Lossless semantic compression for LLM contexts — strip grammar, keep facts, save tokens.

Adaptive caching module for Redis with Fastify and Express integration

AI developer tools via MCP. 150+ tools, pay-per-use from $0.01, no subscriptions. Drift-watch + smoke-tested + plan-aware.

Simple Oodle data compression wrapper

Server-side HTML cache with ETag/304, pre-compression, and i18n for spa-guard

Command line utility to calculate gzip compression savings

node.js implementation of StormLib's pkware compressor/de-compressor

Professional Performance Optimization Module for Node.js APIs - Compatible with Vercel, AWS Lambda, and more

Intelligent context window optimization for Claude Code - store content externally via caching and compression, freeing up your context window for what matters

Hono Compression plugin for Bun

Secure sessionStorage or localStorage data with high level of encryption and data compression

Lossless compression of PNG images

Unofficial CLI for the Tinify API.

Worker-pool-accelerated get/set for zarrita.js — offloads codec encode/decode to Web Workers.

Decompress a single-file tar archive

Gulp plugin to optimize images using imageoptim and jpegmini

A library for working with archive files, providing utilities for compressing and decompressing data.

Node-RED added node functions.

Boolean (Typed Array) & Set of numbers. Very Fast! Greater 'selection' in compression and 2D drawing. Only around 16 kB.

node bindings for the xz compression library

MCP middleware proxy that compresses tools/list, prompts/list, and resources/list responses to save tokens. Sister project to Brevix.