ohmrunJun 12

How about:
-H BeforeYouAsk: NO

#HttpHeaders

InautiloJun 12

#Development #Analyses
Ending responsive images · “Lazy loading changes everything.” https://ilo.im/16domr

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#LazyLoading #Images #ResponsiveImages #ClientHints #HttpHeaders #Cloudinary #Browsers #WebDev #Frontend #HTML

Ending Responsive Images

Mat Marquis isn't known for pulling his punches. And yet, Marquis stopped short when he declared The End of Responsive Images. Mat left responsive images on the ropes. I hope to finish them.

Cloud Four
Frontend DogmaMay 15

Better Browser Caching With “No-Vary-Search”, by @csswizardry:

https://csswizardry.com/2026/05/better-browser-caching-with-no-vary-search/

#caching #httpheaders #http

Better Browser Caching with No-Vary-Search – CSS Wizardry

No-Vary-Search lets HTTP caches ignore irrelevant query parameters such as UTM tags, while still keeping meaningful ones like product variants in the cache key.

InautiloMay 8

#Development #Guides
Browser caching with No-Vary-Search · Better HTTP caching by ignoring irrelevant query parameters https://ilo.im/16crk2

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#Caching #URL #UrlParameters #HTTP #HttpCache #HttpHeaders #Browsers #WebPerf #WebDev #Frontend

Better Browser Caching with No-Vary-Search – CSS Wizardry

No-Vary-Search lets HTTP caches ignore irrelevant query parameters such as UTM tags, while still keeping meaningful ones like product variants in the cache key.

InautiloMar 20

#Development #Approaches
Cookie consent management in 2026 (Part 2) · The technical aspects of a cookie consent solution https://ilo.im/16bj0o

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#User #Consent #Cookies #Browser #Puppeteer #JavaScript #HttpHeaders #WebDev #Frontend #Backend

Cookie Consent Management in 2026, Part 2: Technical Tips

Testing cookies consent compliance proved more difficult than I expected. Here are some tips and tricks I learned while conducting a cookie compliance audit.

Cloud Four
Frontend DogmaJan 21

CDN, by @httparchive.org:

https://almanac.httparchive.org/en/2025/cdn

#webalmanac #studies #research #metrics #contentdelivery #http #performance #httpheaders #compression #tls #hints

CDN | 2025 | The Web Almanac by HTTP Archive

CDN chapter of the 2025 Web Almanac covering adoption of CDNs, top CDN players, the impact of CDNs on TLS, HTTP/2+, Zstandard, Brotli, Early Hints, and Client Hints adoption.

N-gated Hacker NewsJan 18
Behold, yet another article about HTTP headers, the unsung heroes of the internet that only developers care about 🤓. Apparently, these magical lines of text are crucial for everything from making your website scream to whispering sweet nothings to #APIs 🧐. But fear not, thanks to HTTPCOLON you've got a shiny, new, totally-not-overdone tool to inspect them! 🎉
https://httpcolon.dev/ #HTTPheaders #webdevelopment #developer #tools #technews #HackerNews #ngated
HTTP:COLON

N-gated Hacker NewsJan 16
Ah, the thrilling saga of HTTP headers! 🚀 Let's add yet another layer of complexity for devs to misunderstand. #RateLimit headers: because what we really need is to encourage clients to burst like a #piñata at a child's birthday party. 🎉
https://dotat.at/@/2026-01-13-http-ratelimit.html #HTTPHeaders #DevsComplexity #ClientBursting #HackerNews #ngated
HTTP RateLimit headers – Tony Finch

Frontend DogmaJan 16

Security, by @vikvanderlinden.bsky.social and @gertjan.fr (@httparchive.org):

https://almanac.httparchive.org/en/2025/security

#webalmanac #studies #research #metrics #security #tls #certificates #cookies #csp #httpheaders #apis #sanitization #configuration

Security | 2025 | The Web Almanac by HTTP Archive

Security chapter of the 2025 Web Almanac covering Transport Layer Security, content inclusion (CSP, SRI, Permissions Policy), web defense mechanisms (tackling XSS, XS-Leaks), drivers of security mechanism adoptions and security misconfigurations.

Frontend DogmaDec 25

Fixing the URL Params Performance Penalty, by @tunetheweb (@perfplanet.bsky.social):

https://calendar.perfplanet.com/2025/fixing-the-url-params-performance-penalty/

#performance #urls #caching #httpheaders #examples

Fixing the URL params performance penalty

Tales of two pages… What's the difference between these two pages?: https://www.example.com/ https://www.example.com/?utm_source=email I mean they've got different URLs, but many of us would probably guess that that utm_source URL query parameters (or "URL params" or "search params" as it's

Web Performance Calendar