Delivering WordPress in 7 KB css )Jul 10, 2018 277 wordpress , themes HTTP/2: Background, Performance Benefits, and Implementations Jul 4, 2018 276 protocols , http Improving Performance Perception: On-Demand Image Resizing Jul 2, 2018 275 optimization , images , resizing , html How I Dropped 250 KB of Dead CSS Weight With PurgeCSS sar )Jun 25, 2018 274 css , purgecss The Four Big Ways Jetpack Helps With Image Performance css )Jun 19, 2018 273 wordpress , plugins , images Here’s the Thing About “Unused CSS” Tools chr /css )Jun 18, 2018 272 css , quality , tooling 7 Performance Tips for Jank-Free JavaScript Animations Jun 15, 2018 271 javascript , animations , tips-and-tricks Making Your Website Faster and Safer With Cloudflare Jun 12, 2018 270 caching , security , cloudflare How Do You Know Your Website Is a Success? sma )May 29, 2018 269 product-management , strategies , metrics , user-experience , content , microcontent , navigation , testing Page Transitions for Everyone css )May 14, 2018 268 design , user-experience , animations , transitions , caching Introducing Last Painted Hero spe )Apr 4, 2018 267 introductions How Fast Is AMP Really? tka )Mar 19, 2018 266 amp , google , metrics Three Techniques for Performant Custom Font Usage oll /css )Mar 5, 2018 265 fonts , techniques , flash-of-x AMP News chr /css )Feb 26, 2018 264 amp , google , community Why Fast Matters css /btc )Jan 20, 2018 263 videos , economics How to Optimize CSS and JS for Faster Sites Jan 17, 2018 262 how-tos , css , javascript , minification , optimization Finding Dead CSS css )Jan 17, 2018 261 css , maintenance SYN Packet Handling in the Wild clo )Jan 15, 2018 260 tcp , protocols , network Performance of CSS Selectors Is Still Irrelevant j9t )Nov 29, 2017 259 css , selectors Progressive Web Apps: A Crash Course Nov 24, 2017 258 crash-courses , web-apps , progressive-web-apps , lighthouse , google Optimizing CSS: Tweaking Animation Performance With DevTools Nov 23, 2017 257 css , animations , optimization , dev-tools , browsers , firefox , mozilla On Big Picture Thinking in Web Development j9t )Nov 22, 2017 256 user-experience , maintainability , consistency , accessibility , outlooks How to Optimize SQL Queries for Faster Sites Nov 20, 2017 255 how-tos , sql , mysql , databases , caching , optimization Understanding the “Vary” Header sma )Nov 2, 2017 254 http , http-headers , caching The Front-End Checklist the )Oct 18, 2017 253 websites , checklists , html , css , javascript , images , accessibility , seo The State of the Web fox )Aug 31, 2017 252 web Using the Paint Timing API mal /css )Aug 16, 2017 251 apis , time , painting , rendering , javascript (Now More Than Ever) You Might Not Need jQuery oll /css )Jul 12, 2017 250 jquery , javascript , ajax , comparisons , examples Three Reasons Why You Should Care About Google Lighthouse fox /cal )May 31, 2017 249 lighthouse , google What Is the Future of Front End Web Development? chr /css )May 25, 2017 248 outlooks , user-experience , javascript , documentation , native , web , urls , css , preprocessors , html , building , tooling What We Talk About When We Talk About Web Performance btc )May 19, 2017 247 videos Let the Content Delivery Network Optimize Your Images jon /sma )Apr 26, 2017 246 content-delivery , images , optimization Optimizing Web Fonts for Performance: The State of the Art Apr 25, 2017 245 fonts , optimization Brotli and Static Compression mal /css )Apr 12, 2017 244 compression , brotli , gzip , comparisons A Comprehensive Guide to HTTP/2 Server Push mal /sma )Apr 10, 2017 243 guides , http , protocols , servers Guetzli, Google’s New JPEG Encoder tel )Mar 19, 2017 242 images , jpeg , compression , tooling AMP and the Web tka )Mar 7, 2017 241 amp , google , web-platform , web Using HTTP/2 Responsibly: Adapting for Users mal /ali )Feb 2, 2017 240 http , protocols , support , servers Considering How We Use HTTP/2 mal /ali )Feb 2, 2017 239 optimization , http , protocols 11 Tips to Optimize JavaScript and Improve Website Loading and Rendering Speeds Dec 13, 2016 238 javascript , optimization , minification , compression , caching The Web, Worldwide tka )Dec 5, 2016 237 websites , metrics Performant Parallaxing aer /dev )Dec 2, 2016 236 scrolling , css , effects , parallax , positioning Performance: Shame, Hope, Nuance, and Interesting Problems bka )Nov 22, 2016 235 The Joy of Optimizing una /btc )Nov 15, 2016 234 videos , images , optimization Web Packaging Format Oct 22, 2016 233 web-packaging Next Generation Server Compression With Brotli mal /sma )Oct 5, 2016 232 compression , brotli , gzip , comparisons When Is the Right Time to Think About Web Performance? fon /css )Aug 31, 2016 231 processes High Performance SVGs sar /css )Aug 1, 2016 230 svg , images , tooling , optimization The Performance Benefits of “rel=noopener” jaf )Jul 21, 2016 229 html , links , security Ways You Need to Tell the Browser How to Optimize chr /css )May 31, 2016 228 browsers , css , optimization Accessibility and Performance mar )May 5, 2016 227 accessibility , javascript , optimization Service Workers and PWAs: It’s About Reliable Performance, Not “Offline” sli )May 4, 2016 226 web-apps , progressive-web-apps , web-workers , javascript 6 SEO Trends to Watch for in 2016 Mar 17, 2016 225 trends , seo , content , marketing , mobile , social-media How to Optimize Mobile Performance sma )Mar 15, 2016 224 how-tos , mobile , optimization , performance-budgets , content-management , caching , testing CPP: A Standardized Alternative to AMP tka )Feb 24, 2016 223 amp , google , policies Critical Metric: Critical Resources Feb 10, 2016 222 metrics , css , javascript Lazy-Loading Images: How Not to Really Annoy Your Users Jan 19, 2016 221 images , lazy-loading , jquery Why You Should Choose Your Own HTTPS hel )Jan 6, 2016 220 http , content-delivery , tooling , cloudflare 10 Web Predictions for 2016 cra )Jan 6, 2016 219 web , outlooks , security , site-generators , browsers , css , mobile , webassembly , seo The Problem With Progressive Enhancement Jan 5, 2016 218 progressive-enhancement , javascript , resilience The Cost of Frameworks Recap chr /css )Nov 20, 2015 217 frameworks Loading Web Fonts With the Web Font Loader fon /css )Nov 16, 2015 216 fonts , flash-of-x , user-experience JavaScript Frameworks and Mobile Performance Nov 16, 2015 215 javascript , frameworks , mobile Design + Performance zem /btc )Nov 10, 2015 214 videos , design , user-experience HTTP/2: The Pros, the Cons, and What You Need to Know Oct 23, 2015 213 protocols , http Performance Budgets in Action spe )Oct 20, 2015 212 performance-budgets Using Web Fonts the Best Way (in 2015) hel )Oct 8, 2015 211 fonts AMP and Incentives tka )Oct 8, 2015 210 amp , google , web Introducing RAIL: A User-Centric Model for Performance pau /sma )Oct 2, 2015 209 introductions , metrics , user-experience Factors Affecting Website Performance Sep 17, 2015 208 network , browsers , memory , servers , images , multimedia Preloading Images in Parallel With Promises kit )Sep 10, 2015 207 javascript , promises , images , preloading Delivering Responsibly sco /btc )Aug 31, 2015 206 videos , usability , accessibility , sustainability 10 Common Mistakes Web Developers Make Aug 25, 2015 205 mistakes , html , css , javascript , career 5 Easy Performance Tweaks for Node.js Express cra )Aug 17, 2015 204 nodejs , express , optimization , compression Strategies for Cache-Busting CSS chr /css )Aug 14, 2015 203 css , caching , tooling , strategies Understanding Critical CSS sma )Aug 13, 2015 202 css Mastering Image Optimization in WordPress Aug 5, 2015 201 wordpress , images , optimization React + Performance = ? aer )Jul 3, 2015 200 react , metrics Performance Tools fon /css )Jun 7, 2015 199 tooling , content-delivery , testing , dev-tools , images , css , javascript , optimization , link-lists Choosing Performance tka )May 14, 2015 198 facebook+meta Advanced Performance Audits With DevTools pau )Mar 27, 2015 197 auditing , browsers , dev-tools Tour of a Performant and Responsive CSS Only Site css )Jan 23, 2015 196 css , parallax , effects , case-studies Planning for Performance sco /ali )Nov 25, 2014 195 Performance Budget Metrics tka )Nov 18, 2014 194 performance-budgets , metrics Progress Indicators Make a Slow System Less Insufferable nng )Oct 26, 2014 193 progress-indicators , user-experience , design The Perception of Performance lou )Oct 3, 2014 192 user-experience Image Optimization Services gri /clo )Oct 2, 2014 191 images , optimization , link-lists JS Parse and Execution Time tka )Sep 26, 2014 190 javascript , parsing , metrics How a New HTML Element Will Make the Web Faster ars )Sep 2, 2014 189 html , images , responsive-design Minimising Font Downloads jaf )Aug 19, 2014 188 fonts , css , optimization , support , browsers Faster YouTube Embeds With JavaScript Aug 12, 2014 187 embed-code , youtube , javascript Introduction to the Resource Timing API Jul 22, 2014 186 introductions , time , apis , javascript Authoring Critical Above-the-Fold CSS css )Jul 14, 2014 185 css , sass , asynchronicity Optimizing WordPress Performance With P3 Jul 9, 2014 184 wordpress , optimization , plugins Pixels Are Expensive aer )Jul 3, 2014 183 rendering , painting Speed Up Your WordPress Site Jul 1, 2014 182 wordpress , tooling How to Speed Up WordPress sma )Jun 25, 2014 181 how-tos , wordpress Cache Invalidation Strategies With Varnish Cache per /sma )Apr 23, 2014 180 caching , tooling WordPress Performance Improvements That Can Go Wrong sma )Mar 21, 2014 179 wordpress , plugins Grunt and Gulp Tasks for Performance Optimization Mar 4, 2014 178 yeoman , grunt , gulp , tooling , optimization Controlling Heavy Weight Websites Feb 4, 2014 177 user-experience , case-studies Nine Things to Expect From HTTP/2 mno )Jan 30, 2014 176 http , protocols , network Web Performance Tricks—Beyond the Basics Jan 22, 2014 175 tips-and-tricks , html , css , optimization , link-lists Packaging on the Web jen +/tag )Jan 21, 2014 174 web-packaging The Complete Guide to Reducing Page Weight cra )Jan 14, 2014 173 guides , compression , caching , content-delivery , minification Responsive HTML5 Apps: Write Once, Run Anywhere? Where Is Anywhere? wir )Nov 7, 2013 172 html , web-apps , responsive-design , multimedia Avoiding the 300 ms Click Delay, Accessibly tka )Nov 7, 2013 171 events , accessibility Flexbox Layout Isn’t Slow pau /dev )Oct 7, 2013 170 css , flexbox , layout Performance Matters ali )Oct 3, 2013 169 w3c SEO Strategies for Designers Oct 1, 2013 168 seo , strategies , urls , metadata Sustainable Web Design ali )Sep 24, 2013 167 sustainability Webpage Performance geo )Sep 17, 2013 166 compression , images , minification , caching , content-delivery Image Compression for Web Developers dev )Sep 17, 2013 165 images , compression , link-lists WordPress Fragment Caching Revisited css )Sep 5, 2013 164 wordpress , caching , php Domain Sharding Revisited Sep 5, 2013 163 domains , http , protocols Progressive Enhancement Is Faster jaf /sma )Sep 3, 2013 162 progressive-enhancement Solving Rendering Performance Puzzles jaf )Aug 5, 2013 161 svg , javascript , rendering Images Slowing Down Your Site? Try This One Weird Trick! aer )Aug 5, 2013 160 images , javascript Does Flexbox Have a Performance Problem? chr /css )Jul 22, 2013 159 css , flexbox , layout On Mobile, Data URIs Are 6× Slower Than Source Linking (New Research) Jul 13, 2013 158 mobile , data-urls When the UI Is Too Fast nng )Jul 8, 2013 157 usability Say “Yes” to JavaScript mit )Jul 1, 2013 156 javascript , privacy Why We Need Responsive Images tka )Jun 11, 2013 155 images , responsive-design , metrics Creating a Performance Culture May 17, 2013 154 culture HTML5’s “Performance Issue” Rubbished cra )May 15, 2013 153 html No, HTML5 Does Not Have a Performance Issue pba )May 13, 2013 152 html Preventing the Performance Hit from Custom Fonts chr /css )Apr 17, 2013 151 fonts , ajax , jquery , lazy-loading jQuery: The Performance of DOM Caching Apr 5, 2013 150 jquery , dom , caching Why Is Node.js So Much Faster? sim )Jan 1, 2013 149 nodejs , javascript , asynchronicity Web Technology: 5 Things to Watch in 2013 sts /cne )Dec 31, 2012 148 browsers , standards , images Why Moving Elements With “translate()” Is Better Than “pos:abs top/left” pau )Dec 20, 2012 147 css , animations Scrolling Performance aer /dev )Dec 20, 2012 146 scrolling A Tale of Animation Performance chr /css )Dec 20, 2012 145 css , animations The Perception of Speed Dec 3, 2012 144 user-experience , single-page-apps Web Performance: When Millisecond Resolution Just Isn’t Enough mic )Oct 19, 2012 143 javascript , apis , metrics Cache Is King Oct 11, 2012 142 caching Preferred Caching Sep 12, 2012 141 caching , web-apps , internet-explorer , microsoft , browsers Octane: The JavaScript Benchmark Suite for the Modern Web dev )Aug 21, 2012 140 javascript , testing , support , v8 , tooling Loading Half a Billion Rows Into MySQL Jun 5, 2012 139 mysql , databases Building a High Performance Website Feb 15, 2012 138 metrics , processes , optimization The Performance Golden Rule Feb 10, 2012 137 principles Google Wants Faster TCP Jan 26, 2012 136 google , tcp , protocols Use PHP Flush to Improve Site Loading Speed May 26, 2011 135 php , flushing Reduce Your jQuery Script Loading Times May 4, 2011 134 jquery , embed-code HTML5, CSS3, and DOM Performance pau /goo )Apr 22, 2011 133 videos , html , css , dom CSS3 vs. CSS: A Speed Benchmark sma )Apr 21, 2011 132 css , comparisons , metrics Evolution of Script Loading Dec 6, 2010 131 html , javascript , asynchronicity Speed Up Your Website With PHP Buffer Flushing cra )Oct 29, 2010 130 php , flushing Performance Mythbusters tka )Oct 18, 2010 129 optimization , myths Improve JavaScript Performance Oct 12, 2010 128 javascript , optimization Why We Don’t Have a Parent Selector jus )Oct 10, 2010 127 css , selectors The Need for Speed… Why Slow Page Load Times Matter and )Sep 20, 2010 126 slides High-Performance String Concatenation in JavaScript cra )Sep 14, 2010 125 javascript , strings WebPageTest.org and Page Speed Sep 7, 2010 124 webpagetest , google Delay Loading the Print Stylesheet bel )Jul 20, 2010 123 css , print , javascript Website Response Times nng )Jun 21, 2010 122 user-experience , usability , metrics Frontend SPOF Jun 1, 2010 121 html , javascript , css , fonts Efficiently Rendering CSS chr /css )May 24, 2010 120 css , selectors , rendering Performance Toolbelt: Page Speed tka )May 11, 2010 119 tooling Slow Kills tel )May 4, 2010 118 google 9 Causes of Web Page Obesity cra )Apr 22, 2010 117 embed-code , compression , optimization Better JavaScript Minification nza /ali )Apr 20, 2010 116 javascript , minification Data URIs chr /css )Mar 25, 2010 115 data-urls Are You Loosing Traffic by Poor Website Performance? cod /sma )Jan 6, 2010 114 traffic , techniques , tooling , link-lists Full Frontal ’09: Jake Archibald on Performance Optimisation mic /aja )Nov 20, 2009 113 optimization , javascript , dom Fast by Default and Web Performances aja )Nov 3, 2009 112 images , sprites , javascript , css “@ font-face” Is Cool… but Does It Scale? oct /aja )Oct 14, 2009 111 css , fonts JavaScript Gzip Compression in WordPress: What’s Possible and What Hurts lyz /clo )Sep 17, 2009 110 php , javascript , compression , gzip , wordpress Details on JS Compression: Squeezing Every Last Byte on the Wire dal /aja )Aug 19, 2009 109 javascript , compression Best Way to Load Your JavaScript dal /aja )Jul 30, 2009 108 javascript , jquery Reducing the File Size of HTML Documents j9t /goo )Jun 23, 2009 107 html , optimization PHP Performance Tips goo )Jun 23, 2009 106 php , tips-and-tricks How Gzip Compression Works goo )Jun 23, 2009 105 compression , gzip CSS: Using Every Declaration Just Once j9t /goo )Jun 23, 2009 104 css , maintainability Simplifying CSS Selectors Jun 18, 2009 103 css , selectors Page Speed: New Open Source Firebug Performance Extension From Google dal /aja )Jun 5, 2009 102 firebug , google , tooling Flushing the Document Early May 18, 2009 101 flushing Don’t Use “@ import” Apr 9, 2009 100 css Reflows and Repaints: CSS Performance Making Your JavaScript Slow? stu )Mar 27, 2009 99 css , reflow , painting , javascript Performance of CSS Selectors Is Irrelevant j9t )Mar 12, 2009 98 css , selectors Is Optimizing CSS Selectors Worth It? dal /aja )Mar 11, 2009 97 css , selectors , optimization Performance Impact of CSS Selectors Mar 10, 2009 96 css , selectors , metrics Performance and RFC 2396 j9t )Feb 18, 2009 95 links Coupling Asynchronous Scripts Dec 27, 2008 94 javascript , asynchronicity , html State of Performance 2008 Dec 17, 2008 93 retrospectives , outlooks Timing in JavaScript and Browsers Can’t Be Trusted dal /aja )Nov 13, 2008 92 javascript , metrics , windows , microsoft UA Profiler and Google Chrome Sep 9, 2008 91 chrome , google , browsers , profiling The Performance Cost of the HTML Tree Builder hsi )Aug 14, 2008 90 html , parsing , metrics What’s the Fastest Way to Code a Loop in JavaScript? Jul 24, 2008 89 javascript , loops , metrics , comparisons , browsers , firefox , mozilla , camino , safari , opera , internet-explorer Non-Blocking JavaScript Downloads sto )Jul 22, 2008 88 javascript State of AJAX for June 2008: Apple Flexes Open Web Muscles dal /aja )Jul 1, 2008 87 browsers , standards , javascript , extjs , dojo , yui , mootools , jquery , css , svg , canvas , tooling , link-lists Rendering Performance in Canvas Compared to SVG and VML dal /aja )Jun 24, 2008 86 rendering , canvas , svg , images , comparisons Preloading Images With jQuery oct /aja )Jun 20, 2008 85 preloading , images , jquery 15 Tools to Help You Develop Faster Web Pages Jun 12, 2008 84 tooling , browser-extensions , link-lists JavaScript Optimization—High Performance JS Apps May 18, 2008 83 javascript , optimization , lazy-loading Ajaxian Roundup for April 2008: CSS Goodness, Ext Licenses, and the Cloud dal /aja )May 1, 2008 82 javascript , jquery , prototypejs , dojo , extjs , mootools , standards , css , mobile , tooling , code-editors , link-lists The Performance Aspect of Acid3 Apr 2, 2008 81 acid-tests , web-platform , browsers , animations Ajaxian Roundup for March 2008: IE 8, Acid3, and Performance dal /aja )Apr 1, 2008 80 browsers , javascript , dojo , extjs , prototypejs , jquery , css , design , tooling , mobile , databases , comet , link-lists Optimizing Page Loading in the Web Browser ant /web )Mar 23, 2008 79 browsers , optimization IE 8 [Connection] Parallelism Issues dal /aja )Mar 17, 2008 78 internet-explorer , microsoft , browsers IE8 Speeds Things Up Mar 10, 2008 77 internet-explorer , microsoft , browsers , http Include: Pack Your JavaScript With Ease dal /aja )Feb 27, 2008 76 javascript , libraries , minification Does “setTimeout” Solve the “DOMContentLoaded” Problem? Feb 15, 2008 75 javascript , dom , time Is Easy Implementation the Same as Good Code? cod /aja )Feb 13, 2008 74 developer-experience , quality , javascript , embed-code 10 Principles of Effective Web Design vit /sma )Jan 31, 2008 73 principles , design , usability , simplicity , whitespace , conventions , testing A Study of AJAX Performance Issues Jan 22, 2008 72 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 71 browsers , javascript , prototypejs , extjs , yui , jquery , microsoft , security , gwt , comet , css , mobile , link-lists Fallacies of Distributed Computing Explained arn )Jan 1, 2008 70 architecture , network The Great Browser JavaScript Showdown cod )Dec 19, 2007 69 javascript , metrics , opera , safari , apple , internet-explorer , microsoft , firefox , mozilla , browsers , comparisons Monthly Ajaxian Roundup for November 2007: Defining JavaScript 2, Making Security Less Caja, and Mobile dal /aja )Dec 3, 2007 68 dojo , prototypejs , mootools , jquery , yui , gwt , extjs , browsers , javascript , apis , mobile , link-lists Web Standards Do—the Way of Web Standards oli /w3c )Jul 15, 2007 67 standards , html , semantics , http , content-negotiation , caching , xml , xhtml , testing , processes , urls , redirecting Load Time, the UX Factor: Facts and Measures j9t )Jun 21, 2007 66 user-experience Delay Loading Your Print CSS sto )Jun 17, 2007 65 css , print Dynamically Loading Google Analytics mar )Dec 5, 2006 64 javascript , google , analytics The Case for Registering Multiple Domains Oct 30, 2006 63 domains , http JavaScript Loop Test Jun 3, 2006 62 javascript , loops , browsers , metrics Comet: Low Latency Data for the Browser sli )Mar 3, 2006 61 comet , ajax , javascript Ten Steps to a More User Friendly Website Sep 14, 2005 60 flash , images , compression , link-rot , html , conformance , browsers , support , navigation , readability , quality Apache Performance Testing Mar 13, 2005 59 servers , apache , testing 5 Questions for Your Web Development Team joh )Jun 25, 2004 58 mobile , legal , accessibility , maintainability , extensibility , search CSS Sprites: Image Slicing’s Kiss of Death dav /ali )Mar 5, 2004 57 css , images , sprites Is Bloated CSS the New HTML? jus )Oct 27, 2003 56 css , caching By Logical Extension bee )Oct 20, 2003 55 css , selectors 12 Steps to Faster Flash Apr 30, 2003 54 flash Effects of CSS-Based Design dav )Dec 12, 2002 53 html , css , conformance Checking Unix Server Performance Jul 23, 2002 52 servers , unix-like Improving Web Page Loading May 28, 2002 51 optimization , tables , javascript Cache or Check? Apr 19, 2002 50 caching , comparisons Exchanging Information With a Server Without Reloading Your HTML Page Jan 22, 2002 49 html , javascript When Web Pages Don’t Work Aug 29, 2000 48 user-experience , navigation , graceful-degradation , usability , design , testing The 60 Second Battle: Keeping the Visitor Dec 20, 1999 47 user-experience , user-conversion Reduce Network Traffic With Web Caching Sep 8, 1999 46 network , traffic , caching Who Commits the “Top Ten Mistakes” of Web Design? nng )May 16, 1999 45 design , usability , mistakes 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 Website Performance Analyzer (KeyCDN) 42 tools , analysis Website Performance Analyzer (GTmetrix) 41 tools , analysis Website Browser and Location Speed Tester 40 tools , analysis , geolocation Web Vitals Analyzer (SpeedVitals) 39 tools , analysis , web-vitals Web Vitals Analyzer (Calibre) cal )38 tools , analysis , web-vitals Load Time Checker 37 tools , analysis Load Time and Object Checker 36 tools , analysis Image Performance Analyzer 35 tools , analysis , images HTML Size Analyzer deb )34 tools , analysis , html Gzip Checker 33 tools , analysis , compression , gzip Gzip and Brotli Checker 32 tools , analysis , compression , brotli , gzip CDN Use Checker 31 tools , analysis , content-delivery Website Experience Analyzer 30 tools , analysis , user-experience , security Website Analyzer (Accessify) 29 tools , analysis , quality , optimization Code Quality Checker 28 tools , analysis , quality , optimization 