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In addition to being faster and more memory-efficient, MaxPNG 2 brings new features:

• Support for indexed-color and interlaced PNG files
• Passes all PNG test suite test cases
• Contiguous encoding and decoding functions, which are more efficient than the progressive variety
• Support for chroma keys, which are split between the PLTE and tRNS chunks
• RGBA normalization
• Ability to generate premultiplied alpha
• Ability to generate Cairo buffers from PNG files
• Ability to decompose interlaced PNGs into their constituent subimages
• Ability to encode indexed and interlaced PNG files
• Increased safety and validation
• Better-designed API and API naming
• Full API documentation