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Getting the Most Out of PNG

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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Beyond JPEG

image compression

Beyond JPEG

It’s surprising that the venerable JPEG image compression standard, which dates back to 1986, is still the best we can do for photographic image compression. I can’t remember when I encountered my first JPEG image, but JPEG didn’t appear to enter practical use until the early 90’

By Jeff Atwood ·
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A Comparison of JPEG Compression Levels and Recompression

image compression

A Comparison of JPEG Compression Levels and Recompression

Over the years, I’ve standardized on a JPEG compression factor of 15; I find that generally provides the best compromise between image quality and file size for most photographic images. Although I’ve done some ad-hoc testing that pointed to compression factor 15 as the sweet spot before, I’

By Jeff Atwood ·
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