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.
WebPerf
Tips and ideas for areas to improve the performance of your website.
Inconsistent user-experiences with native lazy-loading images
The various web browsers focus on different priorities and user experience trade-offs in their lazy-loading image implementations.
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.
.blog vs .com TLD performance
Established top-level domain resolves faster than newfangled .com domain.
Make AdSense faster with preconnect
Reduce Google AdSense’s impact on page-load times using <link rel="preconnect">. Only used by ~350 out of 12 million partner websites.
What to <link rel=dns-prefetch> and when to use preconnect
I’ve explored a number of web browser quirks with <link rel="dns-prefetch"> and compare it to rel="preconnect".
Progressive JPEGs make a meaningful impact on perceived performance
Make a meaningful impact on your website visitors’ low-bandwidth user experience with semi-progressive JPEG loading.
Safari’s Beacon API problems
You must implement the Beacon API the way WebKit deems to be “the right way” to make it work on iOS, Safari, and WebKit browsers.
Compressed favicons are 70% smaller but 75% are served uncompressed
The majority of websites don’t compress their favicon files despite an impressive average file size reduction of over 70 %.
Aren’t AMP Caches committing copyright infringement?
How can mass-copying pages from web publishers without a license not be considered copyright infringement?
Chrome is right to remove the webRequest extension API
As an extension developer, I support Google’s controversial decision to get rid of a slow and over-powered extension API favored by ad-blocking extensions.
Secondary authoritative DNS service providers compared
A comparison of the security features and other features offerings at 14 different secondary/slave DNS providers.
Compared DNS caching/TTL of different CDNs
Short DNS TTL times are great for failover but can be detrimental to DNS performance. Here’s a comparison of the DNS TTL caching durations of popular CDNs.
Problems to expect when using the Apache mod_cache module
I discuss five implementation problems and gotchas with Apache’s HTTP caching module.
Allow OCSP stapling in Apache Web Server with SELinux policies
Adjust the default SELinux policies in CentOS and Fedora to not block the Apache HTTPD Server from OCSP stapling TLS certificates.
CDNSun, KeyCDN, and BunnyCDN; budget CDNs compared
Compare three budget content delivery networks to find which one gets you the most bang for your bucks.
Save-Data aware HTTP/2 server push
Learn how to set up HTTP Save-Data request-hint aware HTTP/2 server push.
Accelerate redirects with HTTP/2 server push
Set up faster HTTP redirects by using HTTP/2 server push to send the new location in the same response informing the client about the redirect.
Embed a JavaScript CDN in your web browser with Decentraleyes
Browser extension mirrors popular JavaScript library content delivery networks locally to improve load-performance and your privacy.
New Save-Data HTTP header tells websites to reduce their data usage
The new HTTP Save-Data request header can help websites determine the bandwidth constraints of their visitors.
Best practices for caching of syndication feeds for feed readers and publishers
Learn five tricks and best practices to reduce bandwidth for feed readers and publishers alike.
Brave browser may incentivize publishers to finally fix their bloated and slow websites
The new Brave browser rewards websites that load quickly at the detriment of slower websites.
Cache-Control plugin for WordPress
Take control over your WordPress site’s HTTP Cache-Control header directives with easy-to-use WordPress plugin.