Introduction to the Resource Timing API Jul 22, 2014 226 introductions , time , apis , javascript Authoring Critical Above-the-Fold CSS css )Jul 14, 2014 225 css , sass , asynchrony Optimizing WordPress Performance With P3 Jul 9, 2014 224 wordpress , optimization , plugins Pixels Are Expensive aer )Jul 3, 2014 223 rendering , painting Speed Up Your WordPress Site Jul 1, 2014 222 wordpress , tooling How to Speed Up WordPress sma )Jun 25, 2014 221 how-tos , wordpress Cache Invalidation Strategies With Varnish Cache per /sma )Apr 23, 2014 220 caching , tooling WordPress Performance Improvements That Can Go Wrong sma )Mar 21, 2014 219 wordpress , plugins Grunt and Gulp Tasks for Performance Optimization Mar 4, 2014 218 yeoman , grunt , gulp , tooling , optimization Controlling Heavy Weight Websites Feb 4, 2014 217 user-experience , case-studies Nine Things to Expect From HTTP/2 mno )Jan 30, 2014 216 http , protocols , network Web Performance Tricks—Beyond the Basics swa )Jan 22, 2014 215 tips-and-tricks , html , css , optimization , link-lists Packaging on the Web jen +/tag )Jan 21, 2014 214 web-packaging The Complete Guide to Reducing Page Weight cra )Jan 14, 2014 213 guides , compression , caching , content-delivery , minification Responsive HTML5 Apps: Write Once, Run Anywhere? Where Is Anywhere? wir )Nov 7, 2013 212 html , web-apps , responsive-design , multimedia Avoiding the 300 ms Click Delay, Accessibly tka )Nov 7, 2013 211 touch , events , accessibility Flexbox Layout Isn’t Slow pau )Oct 7, 2013 210 css , flexbox , layout Performance Matters ali )Oct 3, 2013 209 w3c SEO Strategies for Designers Oct 1, 2013 208 seo , strategies , urls , metadata Sustainable Web Design ali )Sep 24, 2013 207 sustainability Webpage Performance geo )Sep 17, 2013 206 compression , images , minification , caching , content-delivery Image Compression for Web Developers Sep 17, 2013 205 images , compression , link-lists WordPress Fragment Caching Revisited css )Sep 5, 2013 204 wordpress , caching , php Domain Sharding Revisited Sep 5, 2013 203 domains , http , protocols Progressive Enhancement Is Faster jaf /sma )Sep 3, 2013 202 progressive-enhancement Images Slowing Down Your Site? Try This One Weird Trick! aer )Aug 5, 2013 201 images , javascript Solving Rendering Performance Puzzles jaf )Aug 5, 2013 200 svg , javascript , rendering Does Flexbox Have a Performance Problem? chr /css )Jul 22, 2013 199 css , flexbox , layout On Mobile, Data URIs Are 6× Slower Than Source Linking (New Research) Jul 13, 2013 198 mobile , data-urls When the UI Is Too Fast nng )Jul 8, 2013 197 usability Say “Yes” to JavaScript mit )Jul 1, 2013 196 javascript , privacy Why We Need Responsive Images tka )Jun 11, 2013 195 images , responsive-design , metrics Creating a Performance Culture May 17, 2013 194 culture HTML5’s “Performance Issue” Rubbished cra )May 15, 2013 193 html No, HTML5 Does Not Have a Performance Issue pba )May 13, 2013 192 html Preventing the Performance Hit From Custom Fonts chr /css )Apr 17, 2013 191 fonts , ajax , jquery , lazy-loading jQuery: The Performance of DOM Caching Apr 5, 2013 190 jquery , dom , caching HTTP Archive: Adding Flush Jan 31, 2013 189 php , flushing Why Is Node.js So Much Faster? sim )Jan 1, 2013 188 nodejs , javascript , asynchrony Web Technology: 5 Things to Watch in 2013 sts /cne )Dec 31, 2012 187 browsers , standards , images A Tale of Animation Performance chr /css )Dec 20, 2012 186 css , animations Why Moving Elements With “translate()” Is Better Than “pos:abs top/left” pau )Dec 20, 2012 185 css , animations Scrolling Performance aer )Dec 20, 2012 184 scrolling The Perception of Speed Dec 3, 2012 183 user-experience , single-page-apps Measuring Connection Speed in Browsers Oct 23, 2012 182 network , browsers , mobile Web Performance: When Millisecond Resolution Just Isn’t Enough Oct 19, 2012 181 javascript , apis , metrics Cache Is King Oct 11, 2012 180 caching Preferred Caching Sep 12, 2012 179 caching , web-apps , internet-explorer , browsers Octane: The JavaScript Benchmark Suite for the Modern Web Aug 21, 2012 178 javascript , testing , support , v8 , tooling Loading Half a Billion Rows Into MySQL Jun 5, 2012 177 mysql , databases The Performance of localStorage Revisited nza )Apr 25, 2012 176 browser-storage , javascript In Defense of localStorage nza )Mar 7, 2012 175 browser-storage , javascript Building a High Performance Website Feb 15, 2012 174 metrics , processes , optimization The Performance Golden Rule Feb 10, 2012 173 principles Google Wants Faster TCP Jan 26, 2012 172 google , tcp , protocols Caching Images With JavaScript and HTML5 Progress Bars zol )Jan 16, 2012 171 images , caching , javascript , html , progress-indicators Don’t Use IDs in CSS Selectors? Jul 15, 2011 170 css , selectors , cascade Use PHP Flush to Improve Site Loading Speed May 26, 2011 169 php , flushing Reduce Your jQuery Script Loading Times May 4, 2011 168 jquery , embed-code HTML5, CSS3, and DOM Performance pau )Apr 22, 2011 167 videos , html , css , dom CSS3 vs. CSS: A Speed Benchmark tre /sma )Apr 21, 2011 166 css , comparisons , metrics Evolution of Script Loading Dec 6, 2010 165 html , javascript , asynchrony Speed Up Your Website With PHP Buffer Flushing cra )Oct 29, 2010 164 php , flushing Performance Mythbusters tka )Oct 18, 2010 163 optimization , myths Improve JavaScript Performance Oct 12, 2010 162 javascript , optimization Why We Don’t Have a Parent Selector jus )Oct 10, 2010 161 css , selectors The Need for Speed… Why Slow Page Load Times Matter and )Sep 20, 2010 160 slides High-Performance String Concatenation in JavaScript cra )Sep 14, 2010 159 javascript , strings WebPageTest.org and Page Speed Sep 7, 2010 158 webpagetest , google Delay Loading the Print Stylesheet bel )Jul 20, 2010 157 css , print , javascript Website Response Times nng )Jun 21, 2010 156 user-experience , usability , metrics Frontend SPOF Jun 1, 2010 155 html , javascript , css , fonts Efficiently Rendering CSS chr /css )May 24, 2010 154 css , selectors , rendering Performance Toolbelt: Page Speed tka )May 11, 2010 153 tooling Slow Kills tel )May 4, 2010 152 google 9 Causes of Web Page Obesity cra )Apr 22, 2010 151 embed-code , compression , optimization Better JavaScript Minification nza /ali )Apr 20, 2010 150 javascript , minification Data URIs chr /css )Mar 25, 2010 149 data-urls Are You Loosing Traffic by Poor Website Performance? cod /sma )Jan 6, 2010 148 traffic , techniques , tooling , link-lists How Fast Is Your Site? Dec 2, 2009 147 google , tooling Full Frontal ’09: Jake Archibald on Performance Optimisation mic /aja )Nov 20, 2009 146 optimization , javascript , dom Fast by Default and Web Performances aja )Nov 3, 2009 145 images , sprites , javascript , css Data URIs Explained nza )Oct 27, 2009 144 data-urls , base64 “@font-face” Is Cool… but Does It Scale? oct /aja )Oct 14, 2009 143 css , fonts JavaScript Gzip Compression in WordPress: What’s Possible and What Hurts lyz /clo )Sep 17, 2009 142 php , javascript , compression , gzip , wordpress Details on JS Compression: Squeezing Every Last Byte on the Wire dal /aja )Aug 19, 2009 141 javascript , compression Best Way to Load Your JavaScript dal /aja )Jul 30, 2009 140 javascript , jquery Event Delegation in JavaScript nza )Jun 30, 2009 139 javascript , events Quick Performance Tip: jQuery and “addClass” zac )Jun 30, 2009 138 jquery , tips-and-tricks Let’s Make the Web Faster Jun 23, 2009 137 google Reducing the File Size of HTML Documents j9t )Jun 23, 2009 136 html , optimization PHP Performance Tips Jun 23, 2009 135 php , tips-and-tricks CSS: Using Every Declaration Just Once j9t )Jun 23, 2009 134 css , maintainability How Gzip Compression Works Jun 23, 2009 133 compression , gzip Simplifying CSS Selectors Jun 18, 2009 132 css , selectors Page Speed: New Open Source Firebug Performance Extension From Google dal /aja )Jun 5, 2009 131 firebug , google , tooling Flushing the Document Early May 18, 2009 130 flushing Don’t Use “@import” Apr 9, 2009 129 css Reflows and Repaints: CSS Performance Making Your JavaScript Slow? stu )Mar 27, 2009 128 css , reflow , painting , javascript Performance of CSS Selectors Is Irrelevant j9t )Mar 12, 2009 127 css , selectors Is Optimizing CSS Selectors Worth It? dal /aja )Mar 11, 2009 126 css , selectors , optimization Performance Impact of CSS Selectors Mar 10, 2009 125 css , selectors , metrics Performance and RFC 2396 j9t )Feb 18, 2009 124 links JavaScript Variable Performance nza )Feb 10, 2009 123 javascript , variables Coupling Asynchronous Scripts Dec 27, 2008 122 javascript , asynchrony , html State of Performance 2008 Dec 17, 2008 121 retrospectives , outlooks Timing in JavaScript and Browsers Can’t Be Trusted dal /aja )Nov 13, 2008 120 javascript , metrics , windows UA Profiler and Google Chrome Sep 9, 2008 119 chrome , google , browsers , profiling The Performance Cost of the HTML Tree Builder hsi )Aug 14, 2008 118 html , parsing , metrics What’s the Fastest Way to Code a Loop in JavaScript? Jul 24, 2008 117 javascript , loops , metrics , comparisons , browsers , firefox , camino , safari , opera , internet-explorer Non-Blocking JavaScript Downloads sto )Jul 22, 2008 116 javascript State of AJAX for June 2008: Apple Flexes Open Web Muscles dal /aja )Jul 1, 2008 115 browsers , standards , javascript , extjs , dojo , yui , mootools , jquery , css , svg , canvas , tooling , link-lists , ajaxian Rendering Performance in Canvas Compared to SVG and VML dal /aja )Jun 24, 2008 114 rendering , canvas , svg , images , comparisons Preloading Images With jQuery oct /aja )Jun 20, 2008 113 preloading , images , jquery 15 Tools to Help You Develop Faster Web Pages Jun 12, 2008 112 tooling , browser-extensions , link-lists JavaScript Optimization—High Performance JS Apps May 18, 2008 111 javascript , optimization , lazy-loading Efficient Video Delivery Over the Internet dig )May 13, 2008 110 multimedia , http , link-lists Ajaxian Roundup for April 2008: CSS Goodness, Ext Licenses, and the Cloud dal /aja )May 1, 2008 109 javascript , jquery , prototypejs , dojo , extjs , mootools , standards , css , mobile , tooling , code-editors , ajaxian , link-lists The Performance Aspect of Acid3 Apr 2, 2008 108 acid-tests , web-platform , browsers , animations Ajaxian Roundup for March 2008: IE 8, Acid3, and Performance dal /aja )Apr 1, 2008 107 browsers , javascript , dojo , dwr , extjs , prototypejs , jquery , css , design , tooling , mobile , databases , comet , ajaxian , link-lists Optimizing Page Loading in the Web Browser ant /web )Mar 23, 2008 106 browsers , optimization IE 8 [Connection] Parallelism Issues dal /aja )Mar 17, 2008 105 internet-explorer , browsers IE8 Speeds Things Up Mar 10, 2008 104 internet-explorer , browsers , http Include: Pack Your JavaScript With Ease dal /aja )Feb 27, 2008 103 javascript , libraries , minification Does “setTimeout” Solve the “DOMContentLoaded” Problem? Feb 15, 2008 102 javascript , dom , time Is Easy Implementation the Same as Good Code? cod /aja )Feb 13, 2008 101 developer-experience , quality , javascript , embed-code 10 Principles of Effective Web Design sma )Jan 31, 2008 100 principles , design , usability , simplicity , whitespace , conventions , testing A Study of AJAX Performance Issues Jan 22, 2008 99 ajax , javascript , metrics , studies , research Ajaxian Roundup for December 2007: It’s the End of the Year as We Know It dal /aja )Jan 1, 2008 98 browsers , javascript , prototypejs , extjs , yui , jquery , microsoft , dwr , security , gwt , comet , css , mobile , ajaxian , link-lists Fallacies of Distributed Computing Explained arn )Jan 1, 2008 97 architecture , network The Great Browser JavaScript Showdown cod )Dec 19, 2007 96 javascript , metrics , opera , safari , internet-explorer , firefox , browsers , comparisons Monthly Ajaxian Roundup for November 2007: Defining JavaScript 2, Making Security Less Caja, and Mobile dal /aja )Dec 3, 2007 95 dojo , prototypejs , scriptaculous , mootools , jquery , yui , gwt , extjs , browsers , javascript , apis , mobile , ajaxian , link-lists ActionScript Performance Tips Oct 13, 2007 94 actionscript , tips-and-tricks “replaceHTML” for When “innerHTML” Dogs You Down dal /aja )Sep 13, 2007 93 javascript , html YUI Theater—Joseph Smarr: “High-Performance JavaScript: Why Everything You’ve Been Taught Is Wrong” Aug 29, 2007 92 javascript Web Standards Do—the Way of Web Standards oli /w3c )Jul 15, 2007 91 standards , html , semantics , http , content-negotiation , caching , xml , xhtml , testing , processes , urls , redirecting CSS Selectors—Speed Myths Jul 10, 2007 90 css , selectors , metrics , extjs , jquery , dojo , mootools , prototypejs , internet-explorer , firefox , safari , opera , browsers , comparisons , myths Load Time, the UX Factor: Facts and Measures j9t )Jun 21, 2007 89 user-experience Delay Loading Your Print CSS sto )Jun 17, 2007 88 css , print Faster Page Loads With Image Concatenation Apr 25, 2007 87 images , html , css Adam Bosworth: Why AJAX Failed (Then Succeeded) dal /aja )Feb 1, 2007 86 ajax , user-experience Dynamically Loading Google Analytics mar )Dec 5, 2006 85 javascript , google , analytics Keeping CSS File Sizes Lean for Practicality and Sport Dec 3, 2006 84 css , shorthands , colors [PHP] Debugging and Performance Nov 22, 2006 83 php , debugging The Case for Registering Multiple Domains Oct 30, 2006 82 domains , http The Average Web Page Oct 26, 2006 81 compression , html , images , metrics Lessons in JavaScript Performance Optimisation: 90 Seconds Down to 3 Seconds mic )Sep 26, 2006 80 lessons , javascript , optimization JavaScript Loop Test Jun 3, 2006 79 javascript , loops , browsers , metrics JavaScript Speed Test: Test Your Browsers dal /aja )Apr 25, 2006 78 javascript , testing , browsers AJAX and [Scalability] mic /aja )Apr 21, 2006 77 ajax , servers , scalability Benefits of CSS Apr 20, 2006 76 css , maintainability , accessibility Speeding Up AJAX With JSON aja )Apr 6, 2006 75 ajax , json Fast DOM Queries in Today’s Browsers sli )Mar 18, 2006 74 javascript , dom , browsers , w3c The Benefits of Cascading Style Sheets Mar 14, 2006 73 css , maintainability , consistency , seo , accessibility Comet: Low Latency Data for the Browser sli )Mar 3, 2006 72 comet , ajax , javascript 10 Realistic Steps to a Faster Web Site Feb 2, 2006 71 network , servers , caching , databases AJAX and CSS Optimization Jan 28, 2006 70 ajax , javascript , css , optimization , compression AJAX Perf—Comparing the Atlas and Prototype Class Idioms Dec 21, 2005 69 javascript , comparisons Ten Steps to a More User Friendly Website Sep 14, 2005 68 flash , images , compression , link-rot , html , conformance , browsers , support , navigation , readability , quality Speeding Up Web Browsing cod )Sep 9, 2005 67 browsers , flash , internet-explorer 16 Things That Really Annoy Most Web Users Jul 29, 2005 66 web , metrics , user-experience , pop-ups , link-rot , content , search , navigation , design Apache Performance Testing Mar 13, 2005 65 servers , apache , testing High Performance, High Scalability PHP Is a Lie Jul 1, 2004 64 php , scalability 5 Questions for Your Web Development Team joh )Jun 25, 2004 63 mobile , legal , accessibility , maintainability , extensibility , search Why Use Web Standards? Mar 17, 2004 62 standards , seo , maintainability , accessibility , extensibility CSS Sprites: Image Slicing’s Kiss of Death dav /ali )Mar 5, 2004 61 css , images , sprites Is Bloated CSS the New HTML? jus )Oct 27, 2003 60 css , caching By Logical Extension bee )Oct 20, 2003 59 css , selectors How Critical Is Page Download Time by Itself? Sep 10, 2003 58 user-experience 12 Steps to Faster Flash Apr 30, 2003 57 flash Effects of CSS-Based Design dav )Dec 12, 2002 56 html , css , conformance Saving Bytes by Using Multiple CSS Classes on Elements Nov 27, 2002 55 css , html Checking Unix Server Performance Jul 23, 2002 54 servers , unix-like Improving Web Page Loading May 28, 2002 53 optimization , tables , javascript Cache or Check? Apr 19, 2002 52 caching , comparisons Exchanging Information With a Server Without Reloading Your HTML Page Jan 22, 2002 51 html , javascript XML Is Too Slow… Not Oct 11, 2001 50 xml When Web Pages Don’t Work Aug 29, 2000 49 user-experience , navigation , graceful-degradation , usability , design , testing The 60 Second Battle: Keeping the Visitor Dec 20, 1999 48 user-experience , user-conversion Reduce Network Traffic With Web Caching Sep 8, 1999 47 network , traffic , caching Who Commits the “Top Ten Mistakes” of Web Design? nng )May 16, 1999 46 design , usability , mistakes HTML Crunchers Fuel Compression Obsession tid )Nov 2, 1998 45 html , minification , tooling W3C Unveils a Cure for Web Crawl Apr 20, 1997 44 w3c , protocols , http , crawling HTTP Further Clogs Congested Arteries Jul 15, 1996 43 http , protocols Code Quality Checker 42 tools , analysis , quality , optimization Website Analyzer (Accessify) 41 tools , analysis , quality , optimization Website Experience Analyzer 40 tools , analysis , user-experience , security CDN Use Checker 39 tools , analysis , content-delivery Gzip and Brotli Checker 38 tools , analysis , compression , brotli , gzip Gzip Checker 37 tools , analysis , compression , gzip HTML Size Analyzer deb )36 tools , analysis , html Image Performance Analyzer 35 tools , analysis , images Load Time and Object Checker 34 tools , analysis Load Time Checker 33 tools , analysis Web Vitals Analyzer (Calibre) cal )32 tools , analysis , web-vitals Web Vitals Analyzer (SpeedVitals) 31 tools , analysis , web-vitals Website Browser and Location Speed Tester 30 tools , analysis , geolocation Website Performance Analyzer (GTmetrix) 29 tools , analysis Website Performance Analyzer (KeyCDN) 28 tools , analysis Website Performance Analyzer (PageSpeed) 27 tools , analysis Website Performance Analyzer (Pingdom) 26 tools , analysis Website Performance Analyzer (Uptime.com) 25 tools , analysis Website Performance Analyzer (Uptrends) 24 tools , analysis Website Performance Analyzer (wattspeed) 23 tools , analysis Website Performance Analyzer (WebPageTest) 22 tools , analysis , webpagetest Browser Performance Testers 21 tools , exploration , testing , browsers CSS Sprite Generator (Sprite Cow) 20 tools , exploration , code-generation , css , sprites CSS Sprite Generator (Toptal) 19 tools , exploration , code-generation , css , sprites Image Compressor (Compressor.io) 18 tools , exploration , images , compression , jpeg , png , svg , gif , webp Image Compressor (WebUtils) 17 tools , exploration , images , compression , jpeg , png , webp , avif , jpeg-xl Bandwidth Speed Tester (Bandwidth Place) 16 tools , exploration , network Bandwidth Speed Tester (BroadbandUK) 15 tools , exploration , network Download Time Calculator 14 tools , exploration , network HAR Analyzer and Visualizer 13 tools , exploration , network , visualization Google Lighthouse Report Comparer 12 tools , exploration , google , comparisons Google Lighthouse Scoring Calculator 11 tools , exploration , google Performance Budget Calculator jon )10 tools , exploration , performance-budgets Slow File Download Emulator css +)9 tools , exploration WebPageTest Report Frustration Calculator tim )8 tools , exploration , user-experience , webpagetest Website Performance Analyzer (DebugBear) deb )7 tools , analysis , web-vitals Website Performance Bulk Analyzer 6 tools , analysis , web-vitals Web Vitals Analyzer (EXPERTE.com) 5 tools , analysis , web-vitals Brotli Checker 4 tools , analysis , compression , brotli Website Performance Analyzer (Treo) 3 tools , analysis , web-vitals Website Performance Comparer 2 tools , analysis , comparisons Critical CSS Extractor 1 tools , analysis , css , critical-path , code-generation 