Why is Brotli ineffective at compressing small bodies of data?

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Brotli is ineffective at compressing small bodies of data because its compression algorithm is optimized for larger files. When dealing with small bodies of data, the overhead of the compression algorithm can outweigh the benefits of compression, resulting in little to no reduction in file size. Additionally, Brotli's compression algorithm works by identifying patterns and redundancies in the data, and smaller files may not have enough patterns or redundancies to be compressed effectively.