CORS Explained: Stop Struggling With Cross-Origin Errors Sep 3, 2025 149 security , cors , http-headers A Complete Guide to HTTP Caching jon )Aug 29, 2025 148 guides , caching , performance Three HTTP Versions Later, Forms Are Still a Mess Jul 25, 2025 147 protocols , forms Optimizing Time to First Byte (TTFB): 5 Key Strategies for Faster Load Times des )May 28, 2025 146 guest-posts , performance , optimization , content-delivery , caching , dns Why Do We Have a “Cache-Control” Request Header? css )Mar 7, 2025 145 caching , http-headers The Mystery of Mutable Subresources in Signed Exchanges paw )Feb 11, 2025 144 authentication , signed-exchanges , caching , ruby-on-rails , nextjs , compression , http-headers Fetch and HTTP/2 Support in Node.js, Bun, and Deno dis )Jan 19, 2025 143 data-fetching , support , nodejs , bun , deno HTTP pro /htt )Dec 10, 2024 142 web-almanac , studies , research , metrics , protocols , hints , apis Cloudflare Radar 2024 Year in Review clo )Dec 9, 2024 141 retrospectives , web , web-platform , metrics , comparisons , traffic , ip , embed-code , browsers How Browsers Really Load Web Pages pro /wel )Nov 25, 2024 140 videos , browsers , rendering , parsing , performance The HTTP Crash Course Nobody Asked For fas )Oct 20, 2024 139 crash-courses , protocols How to Implement Content Security Policy (CSP) Headers for Astro tre )Oct 16, 2024 138 how-tos , security , http-headers , csp , astro , vercel , cloudflare Optimising for High Latency Environments css )Sep 16, 2024 137 performance , optimization , content-delivery , caching The HTTP QUERY Method jre +/iet )Sep 14, 2024 136 protocols HTTP 1 vs. HTTP 2 vs. HTTP 3 Aug 29, 2024 135 videos , protocols , history , comparisons Override HTTP Response Headers pat /dev )Jul 18, 2024 134 http-headers , dev-tools , browsers , google , chrome , microsoft , edge Introducing the MDN HTTP Observatory mdn )Jul 2, 2024 133 introductions , mdn , mozilla , security What Is Mixed Content? fre )Jun 15, 2024 132 security Understanding the Most Important HTTP Status Codes Jan 1, 2024 131 protocols HTTP Keanu sue )Dec 14, 2023 130 websites , protocols Content Negotiation in Practice sof )Nov 2, 2023 129 content-negotiation , examples Response Code Cheat Sheet for Laravel HTTP Client ami )Nov 1, 2023 128 cheat-sheets , laravel Local HTTPS for Next.js 13.5 ami )Oct 10, 2023 127 security , testing , nextjs Why HTTP/3 Is Eating the World Sep 25, 2023 126 protocols Towards HTTPS by Default jde /dev )Aug 16, 2023 125 browsers , google , chrome , tls , security Browsers Barely Care What HTTP Status Code Your Web Pages Are Served With cks )Aug 10, 2023 124 browsers , support You Probably Don’t Need “http-equiv” Meta Tags rvi )Jul 27, 2023 123 html , metadata , performance Useful Functions for [an] HTTP Server Jul 13, 2023 122 deno , servers , functions Preload vs. Early Hints vs. Fetch Priority Jul 12, 2023 121 videos , performance , html , hints , comparisons , preloading The 5 Pillars of Every HTTP Request Jun 21, 2023 120 HTTP/1 vs. HTTP/2 vs. HTTP/3 May 5, 2023 119 protocols , comparisons Security Implications of HTTP Response Headers sny )May 3, 2023 118 security , http-headers The Page With No Code chr )Feb 22, 2023 117 minimalism , css Don’t Use 403s or 404s for Rate Limiting Feb 17, 2023 116 seo HTTP/3 Prioritization Demystified pro )Dec 23, 2022 115 performance , protocols CSS for URLs and HTTP Headers jim )Nov 27, 2022 114 css , urls , http-headers HTTP htt )Sep 26, 2022 113 web-almanac , studies , research , metrics , protocols Debunking Myths About HTTPS Sep 18, 2022 112 security , myths You’re Not Using HTTP Status Codes Right Aug 21, 2022 111 protocols HTTP Content Negotiation Jul 6, 2022 110 content-negotiation Faster WordPress Rendering With 3 Lines of Configuration sto )Jul 2, 2022 109 wordpress , performance , css , configuration 404 vs. 410—the Technical SEO Experiment Jun 30, 2022 108 seo , comparisons , experiments A New Definition of HTTP mno )Jun 6, 2022 107 protocols Unexpectedly HTTPS? May 16, 2022 106 security Rethinking Server-Timing as a Critical Monitoring Tool sma )May 16, 2022 105 performance , time , metrics , monitoring How Web Browsers Work: Navigation Apr 22, 2022 104 browsers Using HTTPS in Your Development Environment Mar 7, 2022 103 security , environments Importing ES6 Modules Over HTTP/HTTPS in Node.js Feb 27, 2022 102 esm , nodejs Reliably Send an HTTP Request as a User Leaves a Page css )Feb 22, 2022 101 Caching Header Best Practices sim )Jan 27, 2022 100 performance , caching , http-headers , best-practices Redirects for SEO: A Simple (but Complete) Guide ahr )Dec 8, 2021 99 guides , redirecting , seo HTTP Compression Dec 6, 2021 98 protocols , compression , performance HTTP htt )Dec 1, 2021 97 web-almanac , studies , research , metrics , protocols New HTTP Standards for Caching on the Modern Web Oct 20, 2021 96 protocols , caching , performance , standards How to Cancel an HTTP Request in Node.js Oct 20, 2021 95 how-tos , nodejs The Ultimate Guide to 3xx HTTP Status Codes Oct 13, 2021 94 guides , protocols How to Win at CORS jaf )Oct 12, 2021 93 how-tos , security , cors , html Comparing Page Language Declaration Setups in Screen Readers j9t )Sep 28, 2021 92 accessibility , html , screen-readers , comparisons HTTP/3: Practical Deployment Options pro /sma )Sep 6, 2021 91 protocols , deploying HTTP/3: Performance Improvements pro /sma )Aug 23, 2021 90 protocols , performance HTTP/3 From A to Z: Core Concepts pro /sma )Aug 9, 2021 89 protocols , concepts HTTP Status Codes That You Must Know Jul 14, 2021 88 protocols How to Redirect HTTP to HTTPS sem )Jun 3, 2021 87 how-tos , redirecting , tls , wordpress , nginx , iis , microsoft , apache , servers , seo Encrypting DNS Query Bad for Performance? erw )Feb 20, 2020 86 performance , dns , encryption , security If It Can Be Done Using an HTTP Header, Use an HTTP Header j9t )Jan 13, 2020 85 maintainability , maintenance , http-headers , html Browser Resource Hints: “preload”, “prefetch”, and “preconnect” deb )May 12, 2019 84 performance , hints , html , http-headers , preloading Brave’s Concerns With the Client-Hints Proposal cli +/bra )May 9, 2019 83 brave , browsers , hints , http-headers , privacy Improving Perceived Performance With the Link “rel=preconnect” HTTP Header and )Mar 22, 2019 82 performance , http-headers , hints “Cache-Control” for Civilians css )Mar 4, 2019 81 performance , caching Get Started With Node: An Introduction to APIs, HTTP, and ES6+ JavaScript sma )Feb 20, 2019 80 introductions , nodejs , apis , javascript Speed Up Next-Page Navigations With Prefetching add )Dec 13, 2018 79 performance , hints , html , http-headers , webpack Protecting Your Site With Feature Policy rac /sma )Dec 12, 2018 78 security , http-headers HTTP/2: The Difference Between HTTP/1.1, Benefits, and How to Use It Jul 26, 2018 77 protocols , comparisons , performance HTTP/2: Background, Performance Benefits, and Implementations Jul 4, 2018 76 protocols , performance HTTPS Is Easy tro )Jun 27, 2018 75 websites , security Introduction to Feature Policy dev )Jun 26, 2018 74 introductions , http-headers Understanding the “Vary” Header sma )Nov 2, 2017 73 http-headers , caching , performance The Complete Guide to Switching From HTTP to HTTPS sma )Jun 12, 2017 72 guides , security How (Not) to Control Your CDN mno )Jun 7, 2017 71 content-delivery , caching , security A Comprehensive Guide to HTTP/2 Server Push mal /sma )Apr 10, 2017 70 guides , protocols , servers , performance How to Secure Your Web App With HTTP Headers sma )Apr 3, 2017 69 how-tos , web-apps , security , http-headers , csp What Is HTTP/2? cra )Mar 17, 2017 68 protocols Just Another HTTPS Nudge chr /css )Mar 3, 2017 67 security Using HTTP/2 Responsibly: Adapting for Users mal /ali )Feb 2, 2017 66 protocols , support , servers , performance Considering How We Use HTTP/2 mal /ali )Feb 2, 2017 65 performance , optimization , protocols More Than 300 Federal Gov Websites Fail to Meet Domain Encryption Deadline Jan 4, 2017 64 tls , protocols , security , encryption Serving Custom Headers From Static Sites on CloudFront/S3 With Lambda@Edge Dec 27, 2016 63 aws , serverless , lambda , cloudfront , http-headers , edge-computing How the 404 Error Created the World Wide Web Dec 5, 2016 62 history , web , links The Current State of Web Security (An Interview With Anselm Hannemann) hel +/css )Jan 18, 2016 61 interviews , security , ssl , tls , encryption , cloudflare Why You Should Choose Your Own HTTPS hel )Jan 6, 2016 60 performance , content-delivery , tooling , cloudflare HSTS and “Let’s Encrypt” tka )Jan 4, 2016 59 http-headers , ssl , security HTTP/2: The Pros, the Cons, and What You Need to Know Oct 23, 2015 58 protocols , performance How to Solve Caching Conundrums cra )Oct 20, 2015 57 how-tos , caching HTTP Cats rog )Aug 25, 2015 56 websites , protocols Improving Web Security With the Content Security Policy Jun 24, 2015 55 security , csp Deprecating HTTP yoa )May 11, 2015 54 security , protocols , deprecation Mozilla Wants to Deprecate Non-Secure HTTP, Will Make Proposals to W3C “Soon” epr /ven )Apr 30, 2015 53 mozilla , security , deprecation Want Fancy Firefox Features? Secure Your Website sts /cne )Apr 14, 2015 52 firefox , mozilla , browsers , security Refresh HTTP Header kar )Mar 26, 2015 51 redirecting , http-headers , html , metadata , history Moving to HTTPS on WordPress chr /css )Mar 6, 2015 50 wordpress , security HTTP/2 Is Done mno )Feb 18, 2015 49 protocols It’s Time to Encrypt the Entire Internet kli /wir )Apr 17, 2014 48 web , security , ssl , encryption HTTPS Basics Mar 30, 2014 47 fundamentals , privacy Nine Things to Expect From HTTP/2 mno )Jan 30, 2014 46 protocols , performance , network Domain Sharding Revisited Sep 5, 2013 45 performance , domains , protocols Exploring Header Compression in HTTP/2.0 mno )Jan 4, 2013 44 protocols , http-headers , compression What Will HTTP Be Superseded By? sim )Dec 26, 2012 43 protocols , ssl Making HTTP Requests in Node.js cji )Nov 17, 2012 42 nodejs Page Caching With HTTP Sep 4, 2012 41 caching , ruby-on-rails What’s Next for HTTP mno )Mar 31, 2012 40 protocols HTTP Debugging With Node and http-console Feb 22, 2012 39 debugging , nodejs , tooling “Accept-Charset” Is No More hsi )Feb 6, 2012 38 browsers HTTPS Is More Secure, So Why Isn’t the Web Using It? ars )Mar 20, 2011 37 protocols , security , web Useless HTTP Requests—Favicon kar )Feb 16, 2011 36 favicons , anti-patterns Using CSS Without HTML mat )Dec 14, 2010 35 html , css , http-headers , php , minimalism Thoughts on Archiving HTTP mno )May 5, 2010 34 HTTP Monitoring With Charles jus )Nov 27, 2008 33 monitoring , debugging , tooling Illustrations: What HTTP Errors Look Like cat )Nov 22, 2008 32 errors Understanding HTTP PUT kar /w3c )Oct 1, 2008 31 link-lists Cool URIs in a RESTful World inf )Apr 8, 2008 30 urls , semantic-web , rest IE8 Speeds Things Up Mar 10, 2008 29 internet-explorer , microsoft , browsers , performance HTTP Streaming and Internet Explorer Oct 25, 2007 28 streaming , internet-explorer , microsoft , browsers , comet Web Standards Do—the Way of Web Standards oli /w3c )Jul 15, 2007 27 standards , html , semantics , content-negotiation , caching , performance , xml , xhtml , testing , processes , urls , redirecting The Case for Registering Multiple Domains Oct 30, 2006 26 domains , performance Read-Write Web wz4 /w3c )Oct 12, 2006 25 http-headers , web The Sacrifice of Pragmatism Over Theoretical Purity Aug 7, 2006 24 mime-types DOM vs. Web mno )Apr 20, 2006 23 security , dom “Content-Type” Is Dead Apr 11, 2006 22 mime-types Web Authentication mno )Mar 16, 2006 21 authentication , cookies How Web-Ready Is “XMLHttpRequest”? mno )Jan 23, 2006 20 javascript Who GETs REST? Nov 22, 2005 19 apis , rest , programming PHP and HTTP Making Friends Nov 7, 2005 18 php URI (IRI) Design ann )Aug 5, 2004 17 urls , content-negotiation , localization , internationalization Is the “head” Element Obsolete? ann )Feb 8, 2004 16 html , metadata The Perfect 404 llo /ali )Jan 16, 2004 15 error-pages , javascript , usability Apache HTTP Authentication With PHP sen )Nov 1, 2000 14 servers , apache , authentication , php How the Web Works: HTTP and CGI Explained lar )Oct 12, 1999 13 web , protocols W3C Unveils a Cure for Web Crawl Apr 20, 1997 12 w3c , performance , protocols , crawling HTTP Further Clogs Congested Arteries Jul 15, 1996 11 performance , protocols Website Headers Analyzer (Dries Buytaert) dri )10 tools , analysis , security , http-headers HTTP Request Generator 9 tools , exploration , network , protocols Website Headers Analyzer (Security Headers) 8 tools , analysis , security , http-headers Website Headers Analyzer (Mozilla) moz )7 tools , analysis , security , http-headers HTTP Status Code Checker 6 tools , analysis , network , protocols HTTP Response Analyzer 5 tools , analysis , network , protocols HTTP Request Map Generator sim )4 tools , analysis , network , protocols HTTP Headers Tester 3 tools , analysis , network , http-headers , protocols HTTP/3 Tester 2 tools , analysis , network , protocols HTTP/2 Tester 1 tools , analysis , network , protocols 