Public dataset that tracks how the web is built. Maintained by @patmeenan @paulcalvano @tunetheweb @themax_o and @nrllah

Joined April 2011
HTTP Archive 💾 retweeted
If you tell a browser to cache something for 60s, but also serve an Age header >60s, it's stale on arrival and revalidated before it can be reused. 13.7% of the 15.3M sites measured in the @HTTPArchive do this! paulcalvano.com/2026-09-05-r…
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HTTP Archive 💾 retweeted
Check out the new geo-breakdown in the @HTTPArchive CWV Tech Report! httparchive.org/reports/tech… Geography heavily impacts CWVs. Recent Wix mobile data shows 🇨🇦(93%), 🇯🇵(92%), 🇺🇸🇬🇧🇩🇪(90%) with high pass rates, while 🇧🇷(69%) & 🇮🇳(51%) face tougher real-world conditions #WebPerf @Wix
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HTTP Archive 💾 retweeted
Replying to @HTTPArchive
@HTTPArchive analysis about sites adding AI Bots and Crawlers to their robots.txt files. While robots.txt doesn't "block" bots by itself, it's a clear demonstration of the preferences of site owners and the sentiment towards AI crawlers on today's web. paulcalvano.com/2025-08-21-a…
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Speaking of the Web Almanac, during the holidays, a few more chapters were published: 🔸 Media: almanac.httparchive.org/en/2… 🔸 Page Weight: almanac.httparchive.org/en/2… Both are ready to be read now, so enjoy!
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🎙️ New year, more new content. We are continuing to explore data + content w/ the next stream: ✨ The Web Almanac LIVE STREAM II ✨ 📆 Thursday, January 16th ⏰ 14h EST, everytimezone.com/s/6e8b3a3d 🔗: youtube.com/live/zCiMls26CL8… @HTTPArchive's Web Almanac discussions will include this time around: SEO, Privacy, HTTP, Cookies + 3rd Parties. Join us for this discussion + Q&A!
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HTTP Archive 💾 retweeted
The #WebAlmanac 2024 from @HTTPArchive is here! 🔍 Discover the latest trends shaping the ever-evolving world of #WebDevelopment. Watch @_clarkio's recent video to learn more about the most important asset for developers. youtu.be/v43vWxbALFA
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HTTP Archive 💾 retweeted
1️⃣5️⃣ SEO in 2024 🔍 Key insights into web content and AI-driven indexing: 📊 70% of pages have

elements, but 6% are empty. 🤖 2.7% of pages include GPTBot directives in robots.txt—the most common AI crawler. ❌ 28% of desktop pages have invalid elements due to issues. By @jammer_Volts, @davewsmart, @miknaraujo, @MichaelLewittes, @tunetheweb, @henryprice1 Full report: almanac.httparchive.org/en/2… #SEO #WebSeo #SearchEngines

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HTTP Archive 💾 retweeted
1️⃣4️⃣ Privacy in 2024 🛡️ Privacy practices are shifting: Facebook is moving from third-party to first-party cookies 📊 63% of pages adopt the Protected Audience API. 🍪 14.3% of pages include Facebook’s first-party cookie. 🔍 The most common number of trackers per page is 3. by @vekariayash, Benjamin Standaert, @themax_o, @haddiamjad, Yana Dimova, @shaoor_munir, Chris Böttger, @umaarr6, Alberto Fernandez-de-Retana Full report: almanac.httparchive.org/en/2… #Privacy #WebPrivacy #Tracking #Trackers #Fignerprinting #GoogleSandbox
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HTTP Archive 💾 retweeted
1️⃣3️⃣ Cookies in 2024 🍪 Tracking is still common :/ 📊 61% of cookies are third-party. 🔒 11% of first-party cookies use SameSite=None. By Yohan Beugin, @SW12, Yana Dimova, @rowan_m, @tunetheweb Full report: almanac.httparchive.org/en/2… #Cookies #WebCookies #Tracking #Trackers
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HTTP Archive 💾 retweeted
1️⃣2️⃣ CDN in 2024 🌐  CDNs are transforming the web: 📊 70% of the top 1,000 sites use a CDN. ⚡ 3x faster TLS negotiation at p90 with CDNs. 🗜️ 56% of domains use Brotli compression via CDNs. By J. Viggiano, J. Girinatha, A. Moening, C. Scholles More: almanac.httparchive.org/en/2… #CDN #CDNMedia
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HTTP Archive 💾 retweeted
1️⃣1️⃣  Jamstack in 2024 🚀 Static and prerendered architectures are thriving: 📊 43% of prerendered sites are smaller than dynamic ones. ⚡ Astro saw 3x growth in prerendered sites in 2024. 💻 Prerendered sites use 42% less JavaScript than dynamic ones. By @mikeneumegen, @thomkrupa, @guaca, @avidlarge Full report: almanac.httparchive.org/en/2… #Jamtstack
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HTTP Archive 💾 retweeted
🔟 Ecommerce in 2024 🛒 Ecommerce continues to evolve, dominated by key players: 📦 37% of ecommerce sites use WooCommerce. 💳 Only 3.5% offer PayPal as a payment method. By Johathan Pagel, @nrllah, Niko Kaleev Full report: almanac.httparchive.org/en/2… #Ecommerce
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HTTP Archive 💾 retweeted
9️⃣ CMS in 2024 🖥️ CMS platforms continue to dominate: 📱 49% of mobile sites use a CMS. 🌟 36% of mobile sites rely on WordPress. 📊 WordPress holds 72% of the CMS market share. by @sirjonathan, Lora Raykova, Niko Kaleev, @raemoreywrites, Dan Knauss, @nrllah, @tunetheweb More: almanac.httparchive.org/en/2… #CMS #WordPress #Wix #Joomla
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HTTP Archive 💾 retweeted
8️⃣ Performance in 2024 🚀 Web performance is improving: 📱 43% of mobile sites have good CWV scores (INP is 5% lower than FID). ❌ 15% misuse lazy-loading on LCP. by @Jevgeniazi, @InesAkrap, @rick_viscomi, S. Karamalegos, @imkevdev, @guaca, @CherryJimbo Full report: almanac.httparchive.org/en/2… #Performance #WebPerformance
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HTTP Archive 💾 retweeted
7️⃣ Third-Parties in 2024 📊 Third parties dominate web interactions: 🌐 92% of web pages include one or more third parties. 📈 Median third-party requests per page: 78. 📦 Median third-party domains per page: 22. By @_tobiasu, @vekariayash, @zubair_shafiq, Chris Böttger, @tunetheweb Full report: almanac.httparchive.org/en/2… #Thirdparty #3rdparties #Tracking #Tracker #Ads
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HTTP Archive 💾 retweeted
6️⃣ Fonts in 2024 📊 Fonts are evolving with new trends: 🖋️ 11% of pages use resource hints to preload fonts. 🆙 55% of fonts support OpenType features. 🌍 34% of pages use variable fonts. by @Bram_Stein, @cberret, D. Röttsches, @svgeesus, @Ivan_Ukhov, @jmsoleb, Liam Quin, @Mandy_Kerr, @raphlinus Full report: almanac.httparchive.org/en/2… #Fonts #GoogleFonts #WebFonts
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HTTP Archive 💾 retweeted
5️⃣ Structured Data in 2024 📊 The web is becoming smarter with structured data: 🆙 7% growth in JSON-LD adoption (2022–2024). 📄 64% of pages implement Open Graph data. 🐦 45% of pages use Twitter (X) structured data. By @cyberandy, @JarnoVanDriel, @rrlevering, @nrllah, James Gallagher Full report: almanac.httparchive.org/en/2… #StructuredData #AI #Crawling
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HTTP Archive 💾 retweeted
4️⃣ Markup in 2024 🌐 HTML remains the foundation of the web: 📄 92.8% of documents use the HTML doctype. 📦 Median HTML transfer size: 32 KB. 📊 29% of elements are
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HTTP Archive 💾 retweeted
3️⃣ Accessibility in 2024 🌐 Accessibility gaps remain despite progress: 🔎 40% of sites misuse roles. 📊 Only 57% of sites pass heading tests. By  @civicactions, @hdv, @b_atish, @katekalcevich, @levelaccessa11y, J. Pagel, J. Avila, S. Hantsis Full report: almanac.httparchive.org/en/2… #Accessibility #WebAccessibility
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HTTP Archive 💾 retweeted
2️⃣Sustainability in 2024 🌱Progress toward a sustainable web is slow: ♻️14% of sites use sustainable hosting 🌍1.36 gCO2 for top 10%  pages by L.Satyagraha, @burakGuneli, @InesAkrap,@AlexDawsonUK, @civicactions,@timfrick,@lebreRafael, L.Harcegova Full report: almanac.httparchive.org/en/2… #Sustainability #WebSustainability
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