lossless-compression

Fast In-Memory Data Compression Algorithm (header-only C/C++) 540+MB/s compress, 3000+MB/s decompress, ratio% better than LZ4, Snappy, and Zstd@--1

Lossless compression C library built for ultra-fast decode. Faster than LZ4 (40-75%+ on ARM64), at a better ratio. Official Rust, Python, Node.js, Go and WASM bindings. Write-once/read-many, with optional seekable archives for O(1) random access.

🗜️ Library and application for lossless, format-preserving, two-pass optimization and repair of Vorbis data, reducing its size without altering any audio information.

tiny dependency-free lossless compressor for BC/DXT texture streams (C99, ~1000 LoC)

Local, provider-neutral compression for LLM prompts, tool schemas, JSON, logs, and diffs. Lossless, receipt-audited, no ML tax.

TinyZZZ includes GZIP, LZ4, ZSTD, LZMA compression algorithms written in C language, unlike the official code, this code mainly focuses on simplicity and easy to understand.

fc is a research-grade, lossless floating point compressor.

An online .txt file compressor, de-compressor tool which uses Huffman Coding for Lossless data compression.

Losslessly compress the tool output your AI agent sends the model, prove every value survived, and report the exact tokens removed. Run it as a proxy, a library, or middleware.

A kompakt macOS app to compress images and videos instantly.

NZ1 - NanoZip 1: ultra-fast, dependency-free, portable C compression library optimized for embedded and high-performance use. Full docs: https://ferki-git-creator.github.io/nz1-site/

A tool to generate optimized hardware files for univariate functions.

Multi-language implementations of CCSDS 124.0-B-1 in C, C++, Python, Go, Rust, and Java. The lossless compression standard for fixed-length spacecraft housekeeping telemetry, based on ESA's patented POCKET+ algorithm and built from low-level OR/XOR/AND operations to run on low-power spacecraft processors under tight real-time constraints.

A lossless token-optimization codec for LLM agents — cut input tokens up to 82%, nothing dropped, every fact kept. Drop-in proxy + one-line Python API for Claude Code, Codex, Cursor, OpenAI, Anthropic & Ollama. pip install foveance

Lossless-first prompt compression for JSON, YAML, CSV, and Markdown. Library, CLI, MCP server, desktop app, and browser extension.

A tool to generate optimized hardware files for univariate functions.

JPEG-LS encoder for FPGA. Verified. 240MHz on UltraScale+

C99 header-only small (300 LOC) adaptive entropy encoding library

Really High Efficient File Optimizer will losslessly recompress files as much as possible according to their mime-types

KeSSie HUGE Context Semantic recall for Large Language Models