Performance Calendar » Performance Anti-Patterns: Base64 Encoding
The results basically confirmed my hypothesis, 55% SVG, and PNG + GIF brings the percentage of these three file types to 93%. What did surprise me was that the remaining 7% are nearly all fonts. What are the tonnage costs of these files? We can calculate the length of each of these files (this is uncompressed, and in bytes), and graph the percentiles: Looking carefully at this chart, there are 3 l
Performance Calendar » All about prefetching
Katie Hempenius (@katiehempenius) is an engineer at Google where she works on web performance. Prefetching is a technique that can be used to achieve near-instant page loads. This technique has been used for decades to speed up hardware and compilers; but it’s only been recently, thanks to the introduction of the Network Information API, that it’s usage to speed up web applications has become prac
Web Perf WG: Scheduling off the main thread
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TPAC 2018 - Layout Stability
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Don't use JPEG-XR on the Web
Tobias Baldauf (@tbaldauf) helps to keep trivago fast. He creates DevOps tools, image optimization algorithms & speaks at conferences. He's a proud dad, mindful veggy & music lover. Find out more at who.tobias.is tl;dr: JPEG-XR, an image format supported on Internet Explorer and Microsoft Edge browser, gets software-decoded on the CPU main thread alongside Javascript and thereby negatively impacts
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HTTP/2 Prioritization
Compare HAR files
Sharing is caring: What's new with comparing HAR files?
Attributes `imagesrcset` and `imagesizes` attributes on <link> by domfarolino · Pull Request #4048 · whatwg/html
How the sausage is made - WebPerfWG meeting summary
Improving the perceived performance of your web app
Gradient Image Placeholders