Downloaded 142 times
![! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q
R S T U V W X Y Z [ ] ^ _ ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~ ¡ ¢ £ ¤ ¥ ¦
§ ¨ © ª « ¬ ® ¯ ° ± ² ³ ´ µ ¶ · ¸ ¹ º » ¼ ½ ¾ ¿ À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï Ð Ñ Ò Ó Ô Õ Ö
× Ø Ù Ú Û Ü Ý Þ ß à á â ã ä å æ ç è é ê ë ì í î ï ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ Ā ā Ă ă Ą ą Ć
ć Ĉ ĉ Ċ ċ Č č Ď ď Đ đ Ē ē Ĕ ĕ Ė ė Ę ę Ě ě Ĝ ĝ Ğ ğ Ġ ġ Ģ ģ Ĥ ĥ Ħ ħ Ĩ ĩ Ī ī Ĭ ĭ Į į İ ı IJ ij Ĵ ĵ Ķ ķ
ĸ Ĺ ĺ Ļ ļ Ľ ľ Ŀ ŀ Ł ł Ń ń Ņ ņ Ň ň ʼn Ŋ ŋ Ō ō Ŏ ŏ Ő ő Œ œ Ŕ ŕ Ŗ ŗ Ř ř Ś ś Ŝ ŝ Ş ş Š š Ţ ţ Ť ť Ŧ ŧ
Ũ ũ Ū ū Ŭ ŭ Ů ů Ű ű Ų ų Ŵ ŵ Ŷ ŷ Ÿ Ź ź Ż ż Ž ž ſ ƒ Ơ ơ Ư ư ǰ Ǻ ǻ Ǽ ǽ Ǿ ǿ Ș ș Ț ț ȷ ʼ ˆ ˇ ˉ ˘ ˙
˚ ˛ ˜ ˝ ˳ ̀ ́ ̃ ̉ ̏ ̣΄ ΅ Ά · Έ Ή Ί Ό Ύ Ώ ΐ Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω Ϊ Ϋ ά έ
ή ί ΰ α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ ς σ τ υ φ χ ψ ω ϊ ϋ ό ύ ώ ϑ ϒ ϖ Ѐ Ё Ђ Ѓ Є Ѕ І Ї Ј Љ
Њ Ћ Ќ Ѝ Ў Џ А Б В Г Д Е Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Ъ Ы Ь Э Ю Я а б
в г д е ж з и й к л м н о п р с т у ф х ц ч ш щ ъ ы ь э ю я ѐ ё ђ ѓ є ѕ і ї ј љ њ ћ ќ ѝ ў џ Ѡ ѡ
Ѣ ѣ Ѥ ѥ Ѧ ѧ Ѩ ѩ Ѫ ѫ Ѭ ѭ Ѯ ѯ Ѱ ѱ Ѳ ѳ Ѵ ѵ Ѷ ѷ Ѹ ѹ Ѻ ѻ Ѽ ѽ Ѿ ѿ Ҁ ҁ ҂ ҃ ҄ ҅ ҆ ҈ ҉ Ҋ ҋ Ҍ ҍ
Ҏ ҏ Ґ ґ Ғ ғ Ҕ ҕ Җ җ Ҙ ҙ Қ қ Ҝ ҝ Ҟ ҟ Ҡ ҡ Ң ң Ҥ ҥ Ҧ ҧ Ҩ ҩ Ҫ ҫ Ҭ ҭ Ү ү Ұ ұ Ҳ ҳ Ҵ ҵ Ҷ ҷ Ҹ
ҹ Һ һ Ҽ ҽ Ҿ ҿ Ӏ Ӂ ӂ Ӄ ӄ Ӆ ӆ Ӈ ӈ Ӊ ӊ Ӌ ӌ Ӎ ӎ ӏ Ӑ ӑ Ӓ ӓ Ӕ ӕ Ӗ ӗ Ә ә Ӛ ӛ Ӝ ӝ Ӟ ӟ Ӡ ӡ Ӣ ӣ
Ӥ ӥ Ӧ ӧ Ө ө Ӫ ӫ Ӭ ӭ Ӯ ӯ Ӱ ӱ Ӳ ӳ Ӵ ӵ Ӷ ӷ Ӹ ӹ Ӻ ӻ Ӽ ӽ Ӿ ӿ Ԁ ԁ Ԃ ԃ Ԅ ԅ Ԇ ԇ Ԉ ԉ Ԋ ԋ Ԍ ԍ Ԏ
ԏ Ԑ ԑ Ԓ ԓ Ḁ ḁ Ḿ ḿ Ẁ ẁ Ẃ ẃ Ẅ ẅ Ạ ạ Ả ả Ấ ấ Ầ ầ Ẩ ẩ Ẫ ẫ Ậ ậ Ắ ắ Ằ ằ Ẳ ẳ Ẵ ẵ Ặ ặ Ẹ ẹ Ẻ ẻ
Ẽ ẽ Ế ế Ề ề Ể ể Ễ ễ Ệ ệ Ỉ ỉ Ị ị Ọ ọ Ỏ ỏ Ố ố Ồ ồ Ổ ổ Ỗ ỗ Ộ ộ Ớ ớ Ờ ờ Ở ở Ỡ ỡ Ợ ợ Ụ ụ Ủ ủ
Ứ ứ Ừ ừ Ử ử Ữ ữ Ự ự Ỳ ỳ Ỵ ỵ Ỷ ỷ Ỹ ỹ Ὅ – — ― ‗ ‘ ’ ‚ ‛ “ ” „ † ‡ • … ‰ ′ ″ ‹ › ‼ ⁄ ⁰ ⁴ ⁵ ⁶ ⁷ ⁸ ⁹ ⁿ ₣
₤ ₧ ₫ € ℅ № ℠ ™ Ω ⅛ ⅜ ⅝ ⅞ ∂ ∆ ∏ ∑ − √ ∞ ∫ ≈ ≠ ≤ ≥ ◊ ff fi fl ffi ffl
Do we need all those glyphs?
Open Sans — 22.1 kB](https://image.slidesharecdn.com/speedmatterssowhyisyoursitesoslow-redevelop2015-150817171333-lva1-app6891/75/Speed-matters-So-why-is-your-site-so-slow-61-2048.jpg)
![! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q
R S T U V W X Y Z [ ] ^ _ ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~ ¡ ¢ £ ¤ ¥ ¦
§ ¨ © ª « ¬ ® ¯ ° ± ² ³ ´ µ ¶ · ¸ ¹ º » ¼ ½ ¾ ¿ À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï Ð Ñ Ò Ó Ô Õ Ö
× Ø Ù Ú Û Ü Ý Þ ß à á â ã ä å æ ç è é ê ë ì í î ï ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ Ā ā Ă ă Ą ą Ć
ć Ĉ ĉ Ċ ċ Č č Ď ď Đ đ Ē ē Ĕ ĕ Ė ė Ę ę Ě ě Ĝ ĝ Ğ ğ Ġ ġ Ģ ģ Ĥ ĥ Ħ ħ Ĩ ĩ Ī ī Ĭ ĭ Į į İ ı IJ ij Ĵ ĵ Ķ ķ
ĸ Ĺ ĺ Ļ ļ Ľ ľ Ŀ ŀ Ł ł Ń ń Ņ ņ Ň ň ʼn Ŋ ŋ Ō ō Ŏ ŏ Ő ő Œ œ Ŕ ŕ Ŗ ŗ Ř ř Ś ś Ŝ ŝ Ş ş Š š Ţ ţ Ť ť Ŧ ŧ
Ũ ũ Ū ū Ŭ ŭ Ů ů Ű ű Ų ų Ŵ ŵ Ŷ ŷ Ÿ Ź ź Ż ż Ž ž ſ ƒ Ơ ơ Ư ư ǰ Ǻ ǻ Ǽ ǽ Ǿ ǿ Ș ș Ț ț ȷ ʼ ˆ ˇ ˉ ˘ ˙
˚ ˛ ˜ ˝ ˳ ̀ ́ ̃ ̉ ̏ ̣΄ ΅ Ά · Έ Ή Ί Ό Ύ Ώ ΐ Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω Ϊ Ϋ ά έ
ή ί ΰ α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ ς σ τ υ φ χ ψ ω ϊ ϋ ό ύ ώ ϑ ϒ ϖ Ѐ Ё Ђ Ѓ Є Ѕ І Ї Ј Љ
Њ Ћ Ќ Ѝ Ў Џ А Б В Г Д Е Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Ъ Ы Ь Э Ю Я а б
в г д е ж з и й к л м н о п р с т у ф х ц ч ш щ ъ ы ь э ю я ѐ ё ђ ѓ є ѕ і ї ј љ њ ћ ќ ѝ ў џ Ѡ ѡ
Ѣ ѣ Ѥ ѥ Ѧ ѧ Ѩ ѩ Ѫ ѫ Ѭ ѭ Ѯ ѯ Ѱ ѱ Ѳ ѳ Ѵ ѵ Ѷ ѷ Ѹ ѹ Ѻ ѻ Ѽ ѽ Ѿ ѿ Ҁ ҁ ҂ ҃ ҄ ҅ ҆ ҈ ҉ Ҋ ҋ Ҍ ҍ
Ҏ ҏ Ґ ґ Ғ ғ Ҕ ҕ Җ җ Ҙ ҙ Қ қ Ҝ ҝ Ҟ ҟ Ҡ ҡ Ң ң Ҥ ҥ Ҧ ҧ Ҩ ҩ Ҫ ҫ Ҭ ҭ Ү ү Ұ ұ Ҳ ҳ Ҵ ҵ Ҷ ҷ Ҹ
ҹ Һ һ Ҽ ҽ Ҿ ҿ Ӏ Ӂ ӂ Ӄ ӄ Ӆ ӆ Ӈ ӈ Ӊ ӊ Ӌ ӌ Ӎ ӎ ӏ Ӑ ӑ Ӓ ӓ Ӕ ӕ Ӗ ӗ Ә ә Ӛ ӛ Ӝ ӝ Ӟ ӟ Ӡ ӡ Ӣ ӣ
Ӥ ӥ Ӧ ӧ Ө ө Ӫ ӫ Ӭ ӭ Ӯ ӯ Ӱ ӱ Ӳ ӳ Ӵ ӵ Ӷ ӷ Ӹ ӹ Ӻ ӻ Ӽ ӽ Ӿ ӿ Ԁ ԁ Ԃ ԃ Ԅ ԅ Ԇ ԇ Ԉ ԉ Ԋ ԋ Ԍ ԍ Ԏ
ԏ Ԑ ԑ Ԓ ԓ Ḁ ḁ Ḿ ḿ Ẁ ẁ Ẃ ẃ Ẅ ẅ Ạ ạ Ả ả Ấ ấ Ầ ầ Ẩ ẩ Ẫ ẫ Ậ ậ Ắ ắ Ằ ằ Ẳ ẳ Ẵ ẵ Ặ ặ Ẹ ẹ Ẻ ẻ
Ẽ ẽ Ế ế Ề ề Ể ể Ễ ễ Ệ ệ Ỉ ỉ Ị ị Ọ ọ Ỏ ỏ Ố ố Ồ ồ Ổ ổ Ỗ ỗ Ộ ộ Ớ ớ Ờ ờ Ở ở Ỡ ỡ Ợ ợ Ụ ụ Ủ ủ
Ứ ứ Ừ ừ Ử ử Ữ ữ Ự ự Ỳ ỳ Ỵ ỵ Ỷ ỷ Ỹ ỹ Ὅ – — ― ‗ ‘ ’ ‚ ‛ “ ” „ † ‡ • … ‰ ′ ″ ‹ › ‼ ⁄ ⁰ ⁴ ⁵ ⁶ ⁷ ⁸ ⁹ ⁿ ₣
₤ ₧ ₫ € ℅ № ℠ ™ Ω ⅛ ⅜ ⅝ ⅞ ∂ ∆ ∏ ∑ − √ ∞ ∫ ≈ ≠ ≤ ≥ ◊ ff fi fl ffi ffl
Just Latin glyphs… 14.9 kB — 33% saving](https://image.slidesharecdn.com/speedmatterssowhyisyoursitesoslow-redevelop2015-150817171333-lva1-app6891/75/Speed-matters-So-why-is-your-site-so-slow-62-2048.jpg)
Uploaded byAndy Davies
Speed matters, So why is your site so slow?
The document discusses the critical importance of website speed, highlighting that slow loading times negatively impact user experience and conversions. It cites various statistics showing that even minor improvements in page load speed can significantly enhance engagement and sales. The content emphasizes the need for web design that prioritizes performance and user feedback within defined constraints.
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Speed matters, So why is your site so slow?
- 1. https://www.flickr.com/photos/sharynmorrow/643126727 Speed Matters… So whyis your site so slow? @AndyDavies ReDevelop 2015, August 2015
- 2.
- 3.
- 4. The Web isToo Slow http://www.flickr.com/photos/the_justified_sinner/3507390621
- 6. (it’s just) Toomany sites are too slow http://www.flickr.com/photos/the_justified_sinner/3507390621
- 7. and it’s gettingworse! Only 12% of the top 100 (US) retail sites rendered feature content in less than 3 seconds. ! ! Year-on-year the median page has slowed down by 23% Tammy Everts - Radware State of the Union Fall 2014
- 8. “We’re not beingdeliberate about performance”! Tim Kadlec https://www.flickr.com/photos/lukew/7382528728
- 9. But only ifwe build it that way… http://3.bp.blogspot.com/-0RqujOyE1ro/Up9HF7bPxbI/AAAAAAAAAbM/Ijudm6uq-dg/s1600/This+is+for+Everyone.jpg
- 10. Reader panel (3,000people) rated speed (fast page load time) as their second most important driver! ! Speed had the highest percentage of people saying it was VERY important to them
- 11.
- 12. http://www.slideshare.net/cliffcrocker/velocity-ny-how-to-measure-revenue-in-milliseconds Increased conversions by10%! ! Shaved 1 second off median home page time! 6 seconds of 98th percentile
- 13. Improved load timefrom 1.2s to 0.5s! ! +28% page views / session! +21% time on site / visit! +20% conversion rate http://blog.quanta-computing.com/etam-earns-20-of-conversion-by-optimising-its-online-store/
- 14. We’re more tolerantas we get further into purchase funnels Less Tolerant More Tolerant
- 15. and sometimes weget suspicious if something’s too fast
- 16. and sometimes weget suspicious if something’s too fast
- 17. Design is allabout finding solutions within constraints,! if there were no constraints, it’s not design — it’s art.! Matias Duarte “ ”
- 18. http://www.flickr.com/photos/communityfriend/2342578485 Embrace those constraints…set a performance budget
- 19. Setting a budget Anevent that matters to the visitor! within a set time! under defined network conditions
- 20. “Usable within 10seconds on GPRS connection”! BBC News
- 21.
- 22. Could use pagesize or number of objects but…
- 23. …how well wouldthey work here?
- 24. We know howto make fast sites, there are plenty of recipes out there
- 25. How well dowe understand our medium? https://www.flickr.com/photos/37873897@N06/6924775578
- 26. Do we understandour fundamental building blocks? https://www.flickr.com/photos/ogimogi/2253657555
- 27. Which will befaster? 10Mbps 1Mbps
- 28. Which will befaster? 10Mbps 1Mbps
- 29. Which will befaster? 10Mbps 1Mbps
- 30. Which will befaster? 10Mbps 1Mbps
- 31. Which will befaster? 10Mbps 1Mbps/ 280ms RTT / 28ms RTT
- 32. We often thinkof the network as a pipe https://www.flickr.com/photos/63567936@N00/4181042889
- 33. that’s sometimes reallybad https://www.flickr.com/photos/chesh2000/4487000196
- 34. but the realityis closer to http://1m0esx2939yhjwld8419obqhyb.wpengine.netdna-cdn.com/wp-content/uploads/2014/06/DSC_0492.jpg
- 35. “More Bandwidth Doesn’tMatter (much)”! Mike Belshe PageLoadTime Bandwidth (Mbps) 1 2 3 4 5 6 7 8 9 10 1.36s1.37s1.38s1.39s1.41s1.44s1.50s 1.63s 1.95s 3.11s
- 36. Latency = timebetween request and response Browser Server Request Response Time
- 37. But latency hasa linear impact PageLoadTime(s) 1 2 3 4 Round Trip Time (ms) 0 20 40 60 80 100 120 140 160 180 200 220 240
- 38. http://www.vectortemplates.comBT Backbone roundtriptimes from London: http://ippm.bt.net/hour/europe/lo.shtml Latency increases with distance
- 39. http://www.vectortemplates.comBT Backbone roundtriptimes from London: http://ippm.bt.net/hour/europe/lo.shtml Latency increases with distance 81ms 201ms 156ms 266ms 232ms 28ms
- 40. http://www.vectortemplates.com CDN = contentcloser to visitor = less latency = faster
- 41. There’s the lastmile latency too (and routers, other networking kit, mobile latencies too) https://www.flickr.com/photos/kiwanja/3170292282
- 42. TCP and theLower Bound of Web Performance! John Rauser Will probably need more than one round trip 71kB 143kB 214kB 285kB 1 2 3 4 5 6 7 8 9 10 11 (TCP Segments) Round Trips Size
- 43. We can cheatthe latency penalty (sometimes) https://speakerdeck.com/mikeyk/secrets-to-lightning-fast-mobile-design
- 45.
- 46. User gets feedback Network request stillin progress
- 47.
- 48. Convert HTML … <html> <head> <metaname="viewport" content="width=device-width,initial-scale=1.0"> <link href="styles.css" rel="stylesheet"> <script src="script.js"></script> <title>HTML Example</title> </head> <body> <h1>Title</h1> <p>Some introductory text and picture! <img src="image.jpg"/></p> </body> </html>
- 49. … into DocumentObject Model (DOM) html head body meta link script title h1 p img
- 50. Convert CSS … body{ font-size: 16px } h1 { text-decoration: underline} p { font-weight: bold } p > span { color: #000 } img { border: 1px solid #ccc }
- 51. … into CSSObject Model (CSSOM) body h1 p span font-size: 16px font-size: 16px text-decoration: underline font-size: 16px font-weight: bold font-size: 16px font-weight: bold color: #000 img font-size: 16px border: 1px solid #ccc
- 52. Combine DOM andCSSOM to build Render Tree body h1 p img font-size: 16px text-decoration: underline font-size: 16px font-weight: bold border: 1px solid #ccc font-size: 16px font-weight: bold
- 53.
- 54. But what aboutJavaScript? HTML CSS DOM CSSOM Render! Tree Layout PaintJavaScript
- 55. But what aboutJavaScript? HTML CSS DOM CSSOM Render! Tree Layout PaintJavaScript DOM CSSOM JavaScript JavaScript blocks DOM construction! CSSOM construction blocks JavaScript execution
- 56. async attribute avoidsJavaScript blocking DOM construction ! <script async src="myscript.js"></script> Widely supported - 89.59% (http://caniuse.com/script-async)! ! Doesn’t incur delays of using inline script to load other scripts e.g. Google Analytics snippet
- 57.
- 58. HTML CSS DOM CSSOM Render! Tree Layout PaintJavaScript Render! Tree Fontsand background images discovered when render tree builds
- 59. And we allhate this… right?
- 60. Use font foundriesthat prioritise your visitor’s experience http://www.flickr.com/photos/splorp/4951916342
- 61. ! " #$ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ ] ^ _ ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~ ¡ ¢ £ ¤ ¥ ¦ § ¨ © ª « ¬ ® ¯ ° ± ² ³ ´ µ ¶ · ¸ ¹ º » ¼ ½ ¾ ¿ À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï Ð Ñ Ò Ó Ô Õ Ö × Ø Ù Ú Û Ü Ý Þ ß à á â ã ä å æ ç è é ê ë ì í î ï ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ Ā ā Ă ă Ą ą Ć ć Ĉ ĉ Ċ ċ Č č Ď ď Đ đ Ē ē Ĕ ĕ Ė ė Ę ę Ě ě Ĝ ĝ Ğ ğ Ġ ġ Ģ ģ Ĥ ĥ Ħ ħ Ĩ ĩ Ī ī Ĭ ĭ Į į İ ı IJ ij Ĵ ĵ Ķ ķ ĸ Ĺ ĺ Ļ ļ Ľ ľ Ŀ ŀ Ł ł Ń ń Ņ ņ Ň ň ʼn Ŋ ŋ Ō ō Ŏ ŏ Ő ő Œ œ Ŕ ŕ Ŗ ŗ Ř ř Ś ś Ŝ ŝ Ş ş Š š Ţ ţ Ť ť Ŧ ŧ Ũ ũ Ū ū Ŭ ŭ Ů ů Ű ű Ų ų Ŵ ŵ Ŷ ŷ Ÿ Ź ź Ż ż Ž ž ſ ƒ Ơ ơ Ư ư ǰ Ǻ ǻ Ǽ ǽ Ǿ ǿ Ș ș Ț ț ȷ ʼ ˆ ˇ ˉ ˘ ˙ ˚ ˛ ˜ ˝ ˳ ̀ ́ ̃ ̉ ̏ ̣΄ ΅ Ά · Έ Ή Ί Ό Ύ Ώ ΐ Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω Ϊ Ϋ ά έ ή ί ΰ α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ ς σ τ υ φ χ ψ ω ϊ ϋ ό ύ ώ ϑ ϒ ϖ Ѐ Ё Ђ Ѓ Є Ѕ І Ї Ј Љ Њ Ћ Ќ Ѝ Ў Џ А Б В Г Д Е Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Ъ Ы Ь Э Ю Я а б в г д е ж з и й к л м н о п р с т у ф х ц ч ш щ ъ ы ь э ю я ѐ ё ђ ѓ є ѕ і ї ј љ њ ћ ќ ѝ ў џ Ѡ ѡ Ѣ ѣ Ѥ ѥ Ѧ ѧ Ѩ ѩ Ѫ ѫ Ѭ ѭ Ѯ ѯ Ѱ ѱ Ѳ ѳ Ѵ ѵ Ѷ ѷ Ѹ ѹ Ѻ ѻ Ѽ ѽ Ѿ ѿ Ҁ ҁ ҂ ҃ ҄ ҅ ҆ ҈ ҉ Ҋ ҋ Ҍ ҍ Ҏ ҏ Ґ ґ Ғ ғ Ҕ ҕ Җ җ Ҙ ҙ Қ қ Ҝ ҝ Ҟ ҟ Ҡ ҡ Ң ң Ҥ ҥ Ҧ ҧ Ҩ ҩ Ҫ ҫ Ҭ ҭ Ү ү Ұ ұ Ҳ ҳ Ҵ ҵ Ҷ ҷ Ҹ ҹ Һ һ Ҽ ҽ Ҿ ҿ Ӏ Ӂ ӂ Ӄ ӄ Ӆ ӆ Ӈ ӈ Ӊ ӊ Ӌ ӌ Ӎ ӎ ӏ Ӑ ӑ Ӓ ӓ Ӕ ӕ Ӗ ӗ Ә ә Ӛ ӛ Ӝ ӝ Ӟ ӟ Ӡ ӡ Ӣ ӣ Ӥ ӥ Ӧ ӧ Ө ө Ӫ ӫ Ӭ ӭ Ӯ ӯ Ӱ ӱ Ӳ ӳ Ӵ ӵ Ӷ ӷ Ӹ ӹ Ӻ ӻ Ӽ ӽ Ӿ ӿ Ԁ ԁ Ԃ ԃ Ԅ ԅ Ԇ ԇ Ԉ ԉ Ԋ ԋ Ԍ ԍ Ԏ ԏ Ԑ ԑ Ԓ ԓ Ḁ ḁ Ḿ ḿ Ẁ ẁ Ẃ ẃ Ẅ ẅ Ạ ạ Ả ả Ấ ấ Ầ ầ Ẩ ẩ Ẫ ẫ Ậ ậ Ắ ắ Ằ ằ Ẳ ẳ Ẵ ẵ Ặ ặ Ẹ ẹ Ẻ ẻ Ẽ ẽ Ế ế Ề ề Ể ể Ễ ễ Ệ ệ Ỉ ỉ Ị ị Ọ ọ Ỏ ỏ Ố ố Ồ ồ Ổ ổ Ỗ ỗ Ộ ộ Ớ ớ Ờ ờ Ở ở Ỡ ỡ Ợ ợ Ụ ụ Ủ ủ Ứ ứ Ừ ừ Ử ử Ữ ữ Ự ự Ỳ ỳ Ỵ ỵ Ỷ ỷ Ỹ ỹ Ὅ – — ― ‗ ‘ ’ ‚ ‛ “ ” „ † ‡ • … ‰ ′ ″ ‹ › ‼ ⁄ ⁰ ⁴ ⁵ ⁶ ⁷ ⁸ ⁹ ⁿ ₣ ₤ ₧ ₫ € ℅ № ℠ ™ Ω ⅛ ⅜ ⅝ ⅞ ∂ ∆ ∏ ∑ − √ ∞ ∫ ≈ ≠ ≤ ≥ ◊ ff fi fl ffi ffl Do we need all those glyphs? Open Sans — 22.1 kB
- 62. ! " #$ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ ] ^ _ ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~ ¡ ¢ £ ¤ ¥ ¦ § ¨ © ª « ¬ ® ¯ ° ± ² ³ ´ µ ¶ · ¸ ¹ º » ¼ ½ ¾ ¿ À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï Ð Ñ Ò Ó Ô Õ Ö × Ø Ù Ú Û Ü Ý Þ ß à á â ã ä å æ ç è é ê ë ì í î ï ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ Ā ā Ă ă Ą ą Ć ć Ĉ ĉ Ċ ċ Č č Ď ď Đ đ Ē ē Ĕ ĕ Ė ė Ę ę Ě ě Ĝ ĝ Ğ ğ Ġ ġ Ģ ģ Ĥ ĥ Ħ ħ Ĩ ĩ Ī ī Ĭ ĭ Į į İ ı IJ ij Ĵ ĵ Ķ ķ ĸ Ĺ ĺ Ļ ļ Ľ ľ Ŀ ŀ Ł ł Ń ń Ņ ņ Ň ň ʼn Ŋ ŋ Ō ō Ŏ ŏ Ő ő Œ œ Ŕ ŕ Ŗ ŗ Ř ř Ś ś Ŝ ŝ Ş ş Š š Ţ ţ Ť ť Ŧ ŧ Ũ ũ Ū ū Ŭ ŭ Ů ů Ű ű Ų ų Ŵ ŵ Ŷ ŷ Ÿ Ź ź Ż ż Ž ž ſ ƒ Ơ ơ Ư ư ǰ Ǻ ǻ Ǽ ǽ Ǿ ǿ Ș ș Ț ț ȷ ʼ ˆ ˇ ˉ ˘ ˙ ˚ ˛ ˜ ˝ ˳ ̀ ́ ̃ ̉ ̏ ̣΄ ΅ Ά · Έ Ή Ί Ό Ύ Ώ ΐ Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω Ϊ Ϋ ά έ ή ί ΰ α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ ς σ τ υ φ χ ψ ω ϊ ϋ ό ύ ώ ϑ ϒ ϖ Ѐ Ё Ђ Ѓ Є Ѕ І Ї Ј Љ Њ Ћ Ќ Ѝ Ў Џ А Б В Г Д Е Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Ъ Ы Ь Э Ю Я а б в г д е ж з и й к л м н о п р с т у ф х ц ч ш щ ъ ы ь э ю я ѐ ё ђ ѓ є ѕ і ї ј љ њ ћ ќ ѝ ў џ Ѡ ѡ Ѣ ѣ Ѥ ѥ Ѧ ѧ Ѩ ѩ Ѫ ѫ Ѭ ѭ Ѯ ѯ Ѱ ѱ Ѳ ѳ Ѵ ѵ Ѷ ѷ Ѹ ѹ Ѻ ѻ Ѽ ѽ Ѿ ѿ Ҁ ҁ ҂ ҃ ҄ ҅ ҆ ҈ ҉ Ҋ ҋ Ҍ ҍ Ҏ ҏ Ґ ґ Ғ ғ Ҕ ҕ Җ җ Ҙ ҙ Қ қ Ҝ ҝ Ҟ ҟ Ҡ ҡ Ң ң Ҥ ҥ Ҧ ҧ Ҩ ҩ Ҫ ҫ Ҭ ҭ Ү ү Ұ ұ Ҳ ҳ Ҵ ҵ Ҷ ҷ Ҹ ҹ Һ һ Ҽ ҽ Ҿ ҿ Ӏ Ӂ ӂ Ӄ ӄ Ӆ ӆ Ӈ ӈ Ӊ ӊ Ӌ ӌ Ӎ ӎ ӏ Ӑ ӑ Ӓ ӓ Ӕ ӕ Ӗ ӗ Ә ә Ӛ ӛ Ӝ ӝ Ӟ ӟ Ӡ ӡ Ӣ ӣ Ӥ ӥ Ӧ ӧ Ө ө Ӫ ӫ Ӭ ӭ Ӯ ӯ Ӱ ӱ Ӳ ӳ Ӵ ӵ Ӷ ӷ Ӹ ӹ Ӻ ӻ Ӽ ӽ Ӿ ӿ Ԁ ԁ Ԃ ԃ Ԅ ԅ Ԇ ԇ Ԉ ԉ Ԋ ԋ Ԍ ԍ Ԏ ԏ Ԑ ԑ Ԓ ԓ Ḁ ḁ Ḿ ḿ Ẁ ẁ Ẃ ẃ Ẅ ẅ Ạ ạ Ả ả Ấ ấ Ầ ầ Ẩ ẩ Ẫ ẫ Ậ ậ Ắ ắ Ằ ằ Ẳ ẳ Ẵ ẵ Ặ ặ Ẹ ẹ Ẻ ẻ Ẽ ẽ Ế ế Ề ề Ể ể Ễ ễ Ệ ệ Ỉ ỉ Ị ị Ọ ọ Ỏ ỏ Ố ố Ồ ồ Ổ ổ Ỗ ỗ Ộ ộ Ớ ớ Ờ ờ Ở ở Ỡ ỡ Ợ ợ Ụ ụ Ủ ủ Ứ ứ Ừ ừ Ử ử Ữ ữ Ự ự Ỳ ỳ Ỵ ỵ Ỷ ỷ Ỹ ỹ Ὅ – — ― ‗ ‘ ’ ‚ ‛ “ ” „ † ‡ • … ‰ ′ ″ ‹ › ‼ ⁄ ⁰ ⁴ ⁵ ⁶ ⁷ ⁸ ⁹ ⁿ ₣ ₤ ₧ ₫ € ℅ № ℠ ™ Ω ⅛ ⅜ ⅝ ⅞ ∂ ∆ ∏ ∑ − √ ∞ ∫ ≈ ≠ ≤ ≥ ◊ ff fi fl ffi ffl Just Latin glyphs… 14.9 kB — 33% saving
- 63. A proposal thatmay help… font-display: auto | block | swap | fallback | optional; https://tabatkins.github.io/specs/css-font-rendering/ Proposal to help control font blocking - CSS Font Rendering Controls
- 64. Another proposal thatshould help - link rel=“preload”… https://w3c.github.io/preload/ <!-- preload a widget component --> <link rel="preload" href="/components/widget.html" as="iframe"> ! <!-- preload an application script --> <link rel="preload" href="/app/script.js" as="javascript"> ! <!-- preload a CSS stylesheet --> <link rel="preload" href="/style/style.css" as="stylesheet"> ! <!-- preload a font --> <link rel="preload" href="//example.com/font.woff2" as="font"> ! <!-- preload an image asset --> <link rel="preload" href="//example.com/image.jpg" as="image" media="max-width: 640px">
- 65. Some other waysof hinting are already here <link rel="dns-prefetch" href="other.hostname.com"> ! <link rel="subresource" href="/some_other_resource.js"> ! <link rel="prefetch" href="/some_other_resource.jpeg"> ! <link rel="prerender" href=“//domain.com/next_page.html”>
- 66. https://www.flickr.com/photos/christian_bachellier/582457911 And HTTP/2 serverpush is here now too
- 67. Be deliberate, designfor performance https://www.flickr.com/photos/9760699@N08/3748770917
- 68. Measure frequently -during build and in live http://www.flickr.com/photos/chandramarsono/4324373384
- 69. Remember the constraintsof our medium https://www.flickr.com/photos/33649815@N03/3367739514
- 70.
- 71.