How PNG Works: Compromising Speed for Quality
Reducible・2 minutes read
PNG is a popular image format with lossless compression and uses filtering and LZSS algorithm for compression. QOI is a new image format that offers comparable compression to PNG but with faster encoding speeds, using run length encoding, difference encoding, and pixel indexing.
Insights
- PNG utilizes advanced compression techniques like LZSS and modified Huffman coding for efficient image compression, enhancing quality while maintaining a balance between speed and file size.
- The emerging image format QOI, although relatively new, offers comparable compression performance to PNG but distinguishes itself with faster encoding speeds due to its simplified approach of processing each pixel once and utilizing techniques like run length encoding and difference encoding, making it a promising alternative for image compression needs.
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Recent questions
What is PNG?
A commonly used image file format for websites.
What is the new image format qoi?
A faster alternative to PNG gaining popularity.
What is Huffman coding?
A common scheme in lossless compression.
What is run length encoding?
A method to compress sequences of similar pixel values.
How does QOI differ from PNG?
QOI is faster with comparable compression performance.