A reimplementation of the Zopfli compression library in Rust.

Zopfli is a state of the art DEFLATE compressor that heavily prioritizes compression over speed. It usually compresses much better than other DEFLATE compressors, generating standard DEFLATE streams that can be decompressed with any DEFLATE decompressor, at the cost of being significantly slower.

Features

This crate exposes the following features. You can enable or disable them in your Cargo.toml as needed.

• gzip (enabled by default): enables support for compression in the gzip format.
• zlib (enabled by default): enables support for compression in the Zlib format.
• std (enabled by default): enables linking against the Rust standard library. When not enabled, the crate is built with the #![no_std] attribute and can be used in any environment where alloc (i.e., a memory allocator) is available. In addition, the crate exposes minimalist versions of the std I/O traits it needs to function, allowing users to implement them.
• nightly: enables code constructs and features specific to the nightly Rust toolchain. Currently, this feature improves rustdoc generation and enables the namesake feature on crc32fast, but this may change in the future. This feature also used to enable simd-adler32's namesake feature, but it no longer does as the latest simd-adler32 release does not build with the latest nightlies (as of 2024-05-18) when that feature is enabled.