WebPerf
You don’t want to be on Cloudflare’s naughty list
My home IP ended up on Cloudflare’s naughty list for six days. Most websites and many apps loaded slowly, partially, or not at all. Just had to wait it out.
WebPerf
Image Files
Can you use a WebP file as an Open Graph Protocol image?
Do you still need to maintain webpage thumbnails/link previews in legacy image formats, or have apps caught up with the WebP revolution? It’s a bit complicated.
WebPerf
Brave reduces the page load performance cost of its adblocker
The Brave browser has significantly cut the page load time overhead of its adblocker. Brave loaded pages slower than competing browsers without adblockers.
Web Browsers
Google’s unfair performance advantage in Chrome
Google Chrome gives Google Search (when set as the default search engine) a network performance-boost over competing search engines.
Web Analytics
A technical and privacy review of Cloudflare Web Analytics
Cloudflare has launched a new free web analytics/visitor-counting service. It promises to put end-user privacy first. The service has plenty of room to improve.
WebPerf
Chrome to remove HTTP/2 Push
Chrome intends to remove support for server push; an underutilized performance feature introduced in HTTP/2. It cites low usage and implementation complexity.
WebPerf
Twitter preconnects to the wrong domains
Twitter tried to reduce load times for external links, but made things slower instead. It mistakenly normalizes domains to a point where they’re no longer useful.
Image Files
Comparing file sizes of lossless WebP vs FLIF vs PNG
The FLIF lossless image format makes big claims on file size savings, but lossless WebP actually delivers smaller lossless image files.
Image Files
Comparing AVIF vs WebP file sizes at the same DSSIM
I got impressive results when comparing AVIF and WebP images at the same visual quality (using DSSIM.) AVIF’s 85th percentile was the same as WebP’s 15th!
HTML
Make native lazy-loading images load more eagerly
A tutorial on how to load native lazy-loading images earlier in Safari and Firefox. Speed up page loading while keeping visitors from seeing loading images.
HTML
Inconsistent user-experiences with native lazy-loading images
Web browsers has different priorities and user experience trade-offs in their lazy-loading image implementations. Firefox and Safari vastly different to Chrome.
IPFS
Smarter reusable IPFS chunks from HTML documents
IPFS splits files into chunks. Smarter splitting points in HTML files can create more reusable/deduplicatd chunks with higher availability.