compression

Node.js compression middleware for Express/Connect that provides gzip and deflate encoding. Current stable version is 1.8.1 (August 2024). Maintained by the Express.js team with monthly releases. Handles content negotiation, cache-control respecting, and configurable zlib options. Key differentiator is seamless integration with Express routing, supporting threshold, filter, and level settings. Not a standalone compressor; must be used with Node.js HTTP server or framework. Legacy support for Node >=0.8.0.