---
id: cramjam
version: "2.11.0"
license: MIT
license_treatment: permissive
maintenance: active
---

# cramjam — Thin Python bindings to de/compression algorithms in Rust

License: permissive · Maintenance: active · Popularity: top 1,000 on PyPI

## Install

pip install cramjam
uv add cramjam
poetry add cramjam

## Description

# cramjam

[![Code Style](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/python/black)
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[![Downloads](https://pepy.tech/badge/cramjam/month)](https://pepy.tech/project/cramjam)
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[API Documentation](https://milesgranger.github.io/cramjam/cramjam.html)

### Install (Python)
```commandline
pip install --upgrade cramjam  # Requires no Python or system dependencies!
```


### Install (JavaScript / TypeScript)
```commandline
npm install cramjam
```

### CLI

A CLI interface is available as [`cramjam-cli`](https://github.com/cramjam/cramjam-cli)

### libcramjam

A Rust crate and C friendly library available at [libcramjam](https://github.com/cramjam/libcramjam)

---

Extremely thin and...

## AI interpretation — verify before relying

Provides fast Python bindings to multiple compression algorithms (Snappy, Brotli, Bzip2, Lz4, Gzip, Zlib, Deflate, ZSTD, XZ) implemented in Rust, with no system or Python dependencies required.

Verdict: A well-maintained, dependency-free compression library offering nine algorithms through a simple API. MIT-licensed and actively developed with no known vulnerabilities. Medium install friction stems from platform-specific wheels rather than build complexity. Suitable for production use when compression performance and algorithm variety are priorities.

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