Improve your website performance

Why speed matters, ways to measure it, and best practices to follow to optimize your website for best performance

Transcript

1. IMPROVE YOUR WEBSITE PERFORMANCE WordPress Meetup - 01/26/16 IRINA BLUMENFELD www.twitter.com/irinablumenfeld www.netmagik.com/performance
2. @irinablumenfeld #perfmatters
3. 74% of mobile users will abandon a site if it takes longer then 5 sec to load http://loadstorm.com/2014/04/infographic-web-performance-impacts-conversion-rates/
4. 2 sec peak load time for conversion http://loadstorm.com/2014/04/infographic-web-performance-impacts-conversion-rates/
5. http://searchengineland.com/google-testing-red-slow-label-search-results-slower-sites-215483
6. GOOGLE USES SITE SPEED IN WEB SEARCH RANKING https://googlewebmastercentral.blogspot.com/2010/04/using-site-speed-in-web-search-ranking,html
7. PHONE RAGE
9. Walmart 100 ms 1% revenue wpostats.com
10. 1s 10% conversion wpostats.com
11. 160kb 12% bounce rate Etsy wpostats.com
12. WHAT IMPACTS PAGE SPEED? Geographic Location Network Browser Number of requests File size
13. www.whatdoesmysitecost.com
17. HOW DO YOU MEASURE IT? Plugin Load: P3 Plugin Performance Profiler
18. P3 PLUGIN PERFORMANCE PROFILER
19. GT Metrix
 http://www.gtmetrix.com Pingdom Tools
 http://tools.pingdom.com/fpt/ Google Page Speed Insights
 https://developers.google.com/speed/pagespeed/insights/ WebPageTest.org HOW DO YOU MEASURE IT?
20. GTmetrix
21. GTmetrix Weekly Report
22. webpagetest.org
23. webpagetest.org
24. webpagetest.org
25. webpagetest.org
26. webpagetest.org
27. webpagetest.org
28. SPEED INDEX <1000 - Golden standard Source - Paul Irish - Google Performance Engineer
29. SPEED INDEX Source - HTTP Archive http://httparchive.org/
30. webpagetest.org
31. WATERFALL CHART
32. WATERFALL CHART
33. HOW FAST IS FAST ENOUGH?
35. webpagetest.org
36. webpagetest.org
37. webpagetest.org
38. HOW DO YOU IMPROVE IT?
39. LAY THE FOUNDATION Reliable Hosting www.uptimerobot.com Theme & Plugins
40. IMPROVE 1. Optimize Images 2. Concatenate/Minify Files 3. Caching 4. Gzip 5. CDN 6. Reduce Bad Requests 7. Evaluate Fonts 8. Remove Query Strings
41. MAKE A BACKUP
42. 1. OPTIMIZE IMAGES http://www.soasta.com/blog/page-bloat-2015-web-performance-monitoring/
43. http://www.soasta.com/blog/page-bloat-2015-web-performance-monitoring/
44. PUT YOUR SITE ON A DIET
45. 1. OPTIMIZE IMAGES COMPRESS - reduce size in Kb
 EWWW Image Optimizer - Free WordPress Plugin
 Compress JPEG & PNG images - Free WordPress Plugin
 Kraken.io - online tool and paid WP Plugin
 ImageOptim - Free Mac app
 SCALE/RESIZE - set max width/height
 Imsanity - Free WordPress Plugin
 Compress JPEG & PNG images - Free WordPress Plugin
 Kraken.io - Web Interface PRO
46. 1. OPTIMIZE IMAGES Before - 762 Kb After - 304 Kb Lossy Compression
47. 1. OPTIMIZE IMAGES
48. 1. OPTIMIZE IMAGES
49. Responsive Images 101 Article Series - http://bit.ly/srcsetimages Responsive images in WordPress 4.4
50. 1. OPTIMIZE IMAGES Re-evaluate all your images Delete unnecessary Convert to SVG Use CSS3 instead of images
51. 2. REDUCE REQUESTS - CONCATENATE 100 HTTP requests: 20 JS files 10 CSS files 1/3 of the page!
52. 2. REDUCE REQUESTS - CONCATENATE Minqueue plugin Autoptimize plugin ZenCache (Pro version) CSS file 1 + CSS file 2 + CSS file 3 + CSS file 4… YourSite.com/WP-Content/Resources/CSS/Combined_1234.css =
53. 2. MINIFY CODE BEFORE AFTER
54. 3. CACHING What is 2,241,865/448,373 =
55. 3. CACHING Plugins W3 Total Cache Zen Cache WP Super Cache Managed Hosting Caching
56. 4. GZIP www.giftofspeed.com/gzip-test Reduces response time by up to 90%
57. 4. GZIP www.giftofspeed.com/gzip-test
58. <IfModule deflate_module> <IfModule filter_module> AddOutputFilterByType DEFLATE text/plain text/html AddOutputFilterByType DEFLATE text/xml application/xml application/xhtml+xml application/xml-dtd AddOutputFilterByType DEFLATE application/rdf+xml application/rss+xml application/atom+xml image/svg+xml AddOutputFilterByType DEFLATE text/css text/javascript application/javascript application/x-javascript AddOutputFilterByType DEFLATE font/otf font/opentype application/font-otf application/x-font-otf AddOutputFilterByType DEFLATE font/ttf font/truetype application/font-ttf application/x-font-ttf </IfModule> </IfModule> # BEGIN WordPress <IfModule mod_rewrite.c> RewriteEngine On RewriteBase /your-site/ RewriteRule ^index\.php$ - [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /your-site/index.php [L] </IfModule> # END WordPress .htaccess file 4. GZIP Add this code - http://bit.ly/gzipcompress After this existing code
59. 5. CDN CloudFlare KeyCDN MaxCDN
60. 6. REDUCE BAD REQUESTS http://www.brokenlinkcheck.com/ Plugin - Broken Link Checker
61. <link href='https://fonts.googleapis.com/css? family=Open+Sans:400,300,700,800,600italic' rel='stylesheet' type='text/css'> 7. USE FEWER FONTS, FONT-WEIGHTS
62. 8. REMOVE QUERY STRINGS http://sitename.com/wp-content/plugins/js/some_js?ver=3.4.2
63. 8. REMOVE QUERY STRINGS Plugin: Remove Query Strings from Static Resources insert in functions.php: http://bit.ly/removestrings or
64. LESS IS BETTER Blog posts (<5, use excerpts) Remove unused CSS Evaluate third party calls Sliders and full-screen video background
65. Case Study Before Removed image slider - replaced with 1 image Removed query strings Added Gzip Added Minqueue Plugin to combine CSS and JS Cleaned up CSS After
66. LOOKING AHEAD
67. HTTP1/1.1 - HTTP/2 HTTP1/1.1 HTTP/2
68. HTTP/1.1 AND HTTP/2 COMPARISON Demo from Cloudflare Load Time: 1.95 s Load Time: 0.33 s
69. HTTP/1.1 AND HTTP/2 COMPARISON HTTP/1.1 Waterfall Chart HTTP/2 Waterfall Chart SAME WEBSITE!!!!
70. BENEFITS OF HTTP/2 Multiplexing Server Push Header Compression
71. HTTP/2 Support in current browsers
72. HTTP/2 + HTTPS https://tools.keycdn.com/http2-test Chrome Browser Extension: http://bit.ly/http2-chrome Firefox Browser Extension: http://bit.ly/http2-firefox
73. HTTP/2 WILL NOT FIX ALL YOUR PERFORMANCE PROBLEMS
74. IN CONCLUSION 1. Optimize Images 2. Reduce Requests 3. Add Gzip 4. Caching 5. Use CDN 6. Reduce Bad Requests 7. Evaluate Fonts 8. Remove Query Strings
75. KEEP TESTING
76. THANK YOU Questions? www.twitter.com/irinablumenfeld www.netmagik.com/performance