Getting Started with Profile Guided Optimization

For the convenience of the Windows developer community, I periodically compile the Zopfli and Brotli compressors from source, building for Win32 and code-signing the binaries (Interested? Get Zopfli.exe and Brotli.exe). After announcing the latest build on Twitter, I got an interesting question in reply: While I try to use the latest compiler (VS2015 U1), I’veContinue reading “Getting Started with Profile Guided Optimization”

Photoshop and Save For Web

Adobe recently announced that “Save for Web” in Photoshop is a “legacy feature” which won’t be improved. I decided to have a look at Adobe Photoshop CC (2015.0.0 Release 20150529.r88 x64) to see the impact of its many different “save” commands on the resulting file size. First, I created a trivial 20×20 image and drewContinue reading “Photoshop and Save For Web”

Optimize PNGs using PngDistill

Unfortunately, many PNG image generators opt for minimum compression time, failing to achieve maximum compression. Even worse, the most popular PNG generation tools often include huge amounts of unnecessary metadata that can bloat images by thousands of percent! Fiddler now includes PngDistill, a simple tool that removes unnecessary metadata chunks and recompresses PNG image dataContinue reading “Optimize PNGs using PngDistill”