Optimization articles archive

2009

• SpriteMe (part 2) (September 18, 2009)
• F5 and XHR deep dive (August 11, 2009)
• Computing with JavaScript Web Workers (July 21, 2009)
• Simplifying CSS Selectors (June 18, 2009)
• DOM selectors API in Firefox 3.5 (June 13, 2009)
• Using Iframes Sparingly (June 3, 2009)
• Flushing the Document Early (May 18, 2009)
• Sharding Dominant Domains (May 12, 2009)
• Positioning Inline Scripts (May 6, 2009)
• Loading Scripts Without Blocking (April 27, 2009)
• Make your site faster and cheaper to operate in one easy step (April 17, 2009)
• dont use @import (April 9, 2009)
• Building a Fast People-Finder for Flickr with YUI AutoComplete (March 26, 2009)
• Performance Impact of CSS Selectors (March 10, 2009)
• YSlow and ASP.NET: 100 points "A" grade is possible (February 28, 2009)
• JavaScript Function Call Profiling (February 23, 2009)

2008

• Best Practices for Speeding Up Your Web Site (2007–2008)
• Average Top 100 Weblog Performance Survey (December 29, 2008)
• Coupling async scripts (December 27, 2008)
• YUI Theater Douglas Crockford: "Ajax Performance" (December 23, 2008)
• State of Performance 2008 (December 17, 2008)
• Automated Data:URI CSS Sprites (December 14, 2008)
• Image Optimization, Part 5: AlphaImageLoader (December 8, 2008)
• Image Optimization, Part 4: Progressive JPEG... Hot or Not? (December 5, 2008)
• Evolution of the Web from 2000 to 2007 (November 30, 2008)
• Browser Page Load Performance (November 24, 2008)
• Image Optimization, Part 3: Four Steps to File Size Reduction (November 14, 2008)
• Image Optimization Part 2: Selecting the Right File Format (November 4, 2008)
• Image Optimization Part 1: The Importance of Images (October 29, 2008)
• Runtime Page Optimizer (October 12, 2008)
• Hammerhead: moving performance testing upstream (September 30, 2008)
• Non-blocking JavaScript Downloads (July 22, 2008)
• DOM DocumentFragments (July 21, 2008)
• 15 Tools to Help You Develop Faster Web Pages (June 12, 2008)
• 10 Easy Steps to use Google App Engine as your own CDN (June 9, 2008)
• The Psychology of Web Performance (May 30, 2008)
• Compression using Canvas and PNG-embedded data (May 4, 2008)
• Average Web Page Size Triples Since 2003 (April 28, 2008)
• Ajax performance analysis (April 24, 2008)
• Embedding and Encoding in JavaScript (April 9, 2008)
• Search and Don't Replace (March 14, 2008)
• Inline Images with Data URLs (February 28, 2008)
• How JavaScript Timers Work (February 24, 2008)
• Performance Research, Part 5: iPhone Cacheability - Making it Stick (February 6, 2008)
• JavaScript Library Loading Speed (February 5, 2008)
• The Cost of Banner Advertising on Web Performance (January 31, 2008)
• Improving Drupal's page loading performance (January 30, 2008)

2007

• Optimize Parallel Downloads to Minimize Object Overhead (December 26, 2007)
• Tools for Detecting Memory Leaks (November 29, 2007)
• Suture CSS or JavaScript Files to Reduce HTTP Requests (October 31, 2007)
• Running CPU Intensive JavaScript Computations in a Web Browser (October 25, 2007)
• Client Side Load Balancing for Web 2.0 Applications (October 1, 2007)
• How JavaScript is Slowing Down the Web (And What To Do About It) (August 15, 2007)
• Event delegation without a JavaScript library (August 9, 2007)
• Delay loading your print CSS (June 17, 2007)
• Presentation Layer Performance Tuning (June, 2007)
• Compress JavaScript and CSS without touching your application code (May 2, 2007)
• Performance Research, Part 4: Maximizing Parallel Downloads in the Carpool Lane (April 11, 2007)
• Replace GIF with PNG Images (March 31, 2007)
• Performance Research, Part 3: When the Cookie Crumbles (March 1, 2007)
• Speed Up Your Javascript Load Time (February 21, 2007)
• IE+JScript Performance Recommendations Part 3: JavaScript Code Inefficiencies (January 4, 2007)
• Performance Research, Part 2: Browser Cache Usage - Exposed! (January 4, 2007)
• Optimizing your Flash SWFs (2007)

2006

• Circumventing browser connection limits for fun and profit (December 18, 2006)
• Performance Research, Part 1: What the 80/20 Rule Tells Us about Reducing HTTP Requests (November 28, 2006)
• IE+JavaScript Performance Recommendations Part 2: JavaScript Code Inefficiencies (November 11, 2006)
• On Streaming, Chunking, and Finding the End (November 8, 2006)
• JS includes - the saga continues (October 25, 2006)
• IE + JavaScript Performance Recommendations - Part 1 (August 28, 2006)
• window.onload (again) (June, 2006)
• Serving JavaScript Fast (May 21, 2006)
• JavaScript optimization, are chained calls expensive? (March 8, 2006)
• Optimizing Page Load Time (2006)
• Building High Performance HTML Pages (2006)
• Optimizing Image and Sound Compression for Size/Quality (2006)

2005

• The window.onload Problem - Solved! (September, 2005)
• Understanding and Solving Internet Explorer Leak Patterns (June, 2005)
• Fiddler PowerToy - Part 2: HTTP Performance (June, 2005)
• Unobtrusive Javascript (2005)

2004

• CSS Sprites: Image Slicings Kiss of Death (March 5, 2004)
• Optimising Performance (2004)
• Concerning Etags and Datestamps (2004)

2003

• CSS Expression Optimization (2003)

2000

• Optimizing filesize - Make your files smaller (August, 2000)