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Zopfli Optimization: Literally Free Bandwidth

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Zopfli Optimization: Literally Free Bandwidth

In 2007 I wrote about using PNGout to produce amazingly small PNG images. I still refer to this topic frequently, as seven years later, the average PNG I encounter on the Internet is very unlikely to be optimized. For example, consider this recent Perry Bible Fellowship cartoon. Saved directly from

By Jeff Atwood ·
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image formats

Getting the Most Out of PNG

When it comes to image formats on the internet, it’s generally a three-way tie between JPEG, GIF, and PNG. Deciding which image format to use is relatively straightforward; you choose lossy JPEG when you’re saving continuous-tone photographic images, and you choose between lossless GIF or lossless PNG when

By Jeff Atwood ·
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