heatshrink ☆
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Description:
Data compression library for embedded/real-time systems
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Developer tools
Tags: compression embedded lzss library c real-time
Install: brew install heatshrink
About:
Heatshrink is a lightweight, ANSI C data compression library designed specifically for embedded systems and real-time environments with limited memory and processing power. It implements a simple byte-aligned LZSS compression algorithm that prioritizes low memory usage and deterministic performance over maximum compression ratios. The library is dependency-free, portable, and suitable for compressing data streams on microcontrollers and other resource-constrained devices.
Key Features:
  • Low memory footprint suitable for microcontrollers
  • Deterministic performance with no dynamic allocation
  • Simple byte-aligned LZSS algorithm
  • Dependency-free, portable ANSI C implementation
  • Streaming API for processing data in chunks
Use Cases:
  • Compressing firmware updates for embedded devices
  • Reducing storage requirements for sensor data logging
  • Optimizing network bandwidth for IoT device communication
  • Compressing configuration data in memory-constrained systems
Alternatives:
  • zlib – More powerful but much larger memory and CPU requirements
  • LZ4 – Faster compression but less optimized for microcontrollers
  • miniz – Better compression ratio but higher complexity and memory usage
Version History
Detected Version Rev Change Commit
Sep 13, 2024 4:46pm 0 VERSION_BUMP 790d309c
Oct 2, 2023 11:49am 0 VERSION_BUMP c25608d1
Nov 28, 2022 12:28pm 0 VERSION_BUMP 730fd950
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