JSPM

A small fast zlib stream built on [minipass](http://npm.im/minipass) and Node.js's zlib binding.

LZ-based compression algorithm

High performance (de)compression in an 8kB package

Node.js compression middleware

Minify colors in your CSS files with PostCSS.

Compound File Binary File Format extractor

Mesh optimization library that makes meshes smaller and faster to render

Draco is a library for compressing and decompressing 3D geometric meshes and point clouds. It is intended to improve the storage and transmission of 3D graphics.

Detect if a Buffer/Uint8Array is compressed using deflate

Middleware and Plugin for request compression.

A reliable compressor and decompressor for Brotli, supporting node & browsers via wasm

Fastest Snappy compression library in Node.js

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

Fastify compression utils

Turn a CSS color into its smallest representation.

LZ4 streaming compression and decompression

Fastest Snappy compression library in Node.js

An Lz4 implementation for the browser.

Decompression and compression plugins for loaders.gl

Node.js compression middleware with brotli and zopfli support

Compact binary encoding for geographic data

Fastest Snappy compression library in Node.js

simple wrapper on top of express.static, that allows serving pre-gziped files

High performance Zstandard (de)compression

Compress JSON in URL friendly strings

A high-performance string compression library

High Performance lz4 wasm implementation

Buffer compression and transformation codecs for use in data storage and communication applications.

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

Popsicle middleware for supporting `Content-Encoding` compression

Compress your Rollup / Vite bundle with Gzip or Brotli

Compress Image, Video, and Audio same like Whatsapp & Auto/Manual Compression | Background Upload | Download File | Create Video Thumbnail

Simple cross Node.js inteface for using brotli compression

License detector for UglifyJS

ZIP compress files

Node.js interface to the system installed zstd.

Fastest Snappy compression library in Node.js

node-zip - Zip/Unzip files ported from JSZip

Provides bindings to the native liblzma library (.xz file format, among others)

Fastest Snappy compression library in Node.js

fast and tiny snappy compression in wasm

Fastest Snappy compression library in Node.js

Zstandard (zstd) compression library bindings with Node-API

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

Fastest Snappy compression library in Node.js

Fastest Snappy compression library in Node.js

This package contains a specific version of Draco 3D geometric compression library that is used for glTF Draco mesh compression extension.

Per-message DEFLATE compression extension for WebSocket connections

Fastest Snappy compression library in Node.js

Compress json-data based on its json-schema

An implementation of unzip for JavaScript

Fastest Snappy compression library in Node.js

Image processing library

CLI for compressing files.

Image processing library

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

Fastest Snappy compression library in Node.js

Fastest Snappy compression library in Node.js

Fastest Snappy compression library in Node.js

Efficient (de)compression package for AWS Lambda

Angular utility for compressing images to a satisfying size, that you can choose

Fastest Snappy compression library in Node.js

Pure javascript implementation of Zlib nodejs core module. The zlib module provides compression functionality implemented using Gzip, Deflate/Inflate, and Brotli. Compatible with Node.js 22.x LTS.

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

very simple zipping/uzipping of local files and directories in node.js

LZ4 compression codec for the KafkaJS library

Compression for HTTP microservices built with Micro

A client side JavaScript image compression library

Adding gzip/brotli for your HTTP server

Fastest Snappy compression library in Node.js

A Quill rich text editor Module which compresses images uploaded to the editor

Fastest Snappy compression library in Node.js

Pure JavaScript Vcdiff decoder that works with binary deltas from Google's open-vcdiff

Image processing library

A gzip, brotli and zstd compressor for Astro

Fastest Snappy compression library in Node.js

Compress and decompress data on the web using WebAssembly.

Memory compression system for Claude Code - persist context across sessions

A client side JavaScript image compression library. Forked from compress.js (alextanhongpin), and improved rewrite by David Moodie.

Fastest Snappy compression library in Node.js

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

High Performance lz4 wasm implementation

immutable.js transform for redux-persist

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.

LZ4 streaming compression and decompression library for KafkaJS

Compressing images using the ETC & ETC2 texture compression standard.

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

WebAssembly port of Deflate, Gzip, and Zlib compression algorithms

PNG optimizer, similar to optipng

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

Image processing library

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

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

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

Image processing library

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

Image processing library

Simple, clean PDF compression library with excellent DX

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

Image processing library

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

A CBOR-LD encoder/decoder for Javascript.

minimal express app configuration

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)

Elysia Compression that supports Brotli, GZIP, and Deflate compression

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

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.