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BETTER BY PROXY Tim Kadlec | @tkadlec

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“Opera Mini is a s&%##* browser…

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“Proxy browsers are s&%##* browsers…

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“

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• No 3G • No Wi-Fi • Non-touch • 240 x 320 • 64MB internal

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0 3000 6000 9000 12000 Kenya Pakistan Iran India Azerbaijan Armenia China Belarus Kazakhstan Bosnia Georgia Macedonia US

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0 3000 6000 9000 12000 Kenya Pakistan Iran India Azerbaijan Armenia China Belarus Kazakhstan Bosnia Georgia Macedonia US 10x

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0.1% 16.0% 3G Penetration Fixed Broadband

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Iran 3G connections are “…against human and moral standards.” http://bit.ly/1pKV0gH

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speed as a weapon

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Our internet is not their internet.

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http://flic.kr/p/cfoupQ

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“…as bandwidth grows, and as processing power grows, and as browsers get better we just keep filling everything up. Jeff Veen Path to Performance Podcast

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2099kb

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2099kb

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100 million daily active users

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42.2% market share in India

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34.6% market share in China

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258 million active users in January

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168 billion pages transcoded

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Top 5 tablet browser in 40 countries

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Conservative Aggressive

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Network constrained

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Bandwidth
 Latency Cost of Data

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Device constrained

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Memory CPU

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Conservative Aggressive

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High Bandwidth/Low Latency

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23%

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gzip

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gzip minification

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gzip minification image compression image transcoding

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[REMOTE_ADDR] => 90.145.158.4

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[REMOTE_ADDR] => 66.249.81.203

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[REMOTE_ADDR] => 66.249.81.203 [HTTP_X_FORWARDED_FOR] => 90.145.158.4

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[HTTP_X_CONTENT_OPT] => Turbo/4.35.8109

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[HTTP_VIA] => 1.1 Chrome-Compression-Proxy

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[HTTP_X_UCBROWSER_UA] => dv(XT1095);pr(UCBrowser/10.3.0.552);ov(Android 5.0);ss(360*592);pi(1080*1776);bt(GJ);pm(1);bv( 1);nm(0);im(0);sr(0);nt(1);dn(8664342047-3f9902 87);ai(720089404747345);

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POTENTIAL ISSUE #1:
 Minification removes comments in JS/CSS

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SOLUTION:
 Don’t rely on comments
 Use Cache-Control: no-transform POTENTIAL ISSUE #1:
 Minification removes comments in JS/CSS

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POTENTIAL ISSUE #2:
 Images may be removed from page

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SOLUTION:
 Ensure all images have text fallbacks POTENTIAL ISSUE #2:
 Images may be removed from page

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POTENTIAL ISSUE #3:
 Image transcoding or compression may result
 in blurry images

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POTENTIAL ISSUE #3:
 Image transcoding or compression may result
 in blurry images SOLUTION:
 Use Cache-Control: no-transform

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DATA SAVINGS Up to 50% Approximately 58% Up to 60%

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Conservative Aggressive

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REMOTE BROWSING

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var myButton = document.getElementById('#mybutton'); button.addEventListener('click', function(){ //something });

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Everything requires user interaction. Everything requires a server round-trip.

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Limit data consumed and limit impact on device.

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contextmenu dblclick error keydown keypress keyup mousemove mouseenter mouseleave mouseout mousewheel resize scroll touchcancel touchend touchmove touchstart

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setTimeout ~= 5s setInterval ~= 5s xmlHTTPRequest ~= 5s

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setTimeout executed immediately setInterval executed once immediately xmlHTTPRequest ~= 3s-4s

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DIFF

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Limit data consumed and limit impact on device while providing a nearly equal experience to a typical browser.

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contextmenu dblclick error keydown keypress keyup mousemove mouseenter mouseleave mouseout mousewheel resize scroll touchcancel touchend touchmove touchstart

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RENDERING ENGINE Presto Blink (Chrome 30) U2 kernel (based on WebKit) Gecko

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border-image border-radius gradients transitions animations @keyframes font-face javascript only API’s (ex: localStorage)

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no icon fonts

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supportSVG = true

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supportSVG = true no onerror

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UCWEB/2.0 (MIDP-2.0; U; Adr 5.0; EN- US; XT1095) U2/1.0.0 UCBrowser/ 9.9.1.554 U2/1.0.0 Mobile

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UCWEB/2.0 (MIDP-2.0; U; Adr 5.0; EN- US; XT1095) U2/1.0.0 UCBrowser/ 9.9.1.554 U2/1.0.0 Mobile

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document.write(navigator.userAgent);

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Mozilla/50 (X11; U; Linux i686; zh- CN; rv: 1.2.3.4) Gecko/ document.write(navigator.userAgent);

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if('querySelector' in document && 'localStorage' in window && 'addEventListener' in window) { // bootstrap the javascript application }

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if('querySelector' in document && 'localStorage' in window && 'addEventListener' in window) { // bootstrap the javascript application } Sure, why not.

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var hasStorage = (function() { try { localStorage.setItem(mod, mod); localStorage.removeItem(mod); return true; } catch (exception) { return false; } }()); if( 'querySelector' in document && hasStorage && 'addEventListener' in window ){ // bootstrap the javascript application }

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var hasStorage = (function() { try { localStorage.setItem("test", "mod" ); localStorage.removeItem("test"); return true; } catch (exception) { if (exception && exception.name=="QuotaExceededError" && localStorage.length == 0) { return true; } else { return false; } return false; } }()); if( 'querySelector' in document && hasStorage && 'addEventListener' in window ){ //cuts the mustard }

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DISPLAY MODES

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PUFFIN REQUEST DESKTOP

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PUFFIN REQUEST DESKTOP

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SINGLE COLUMN VIEW

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[HTTP_X_UCBROWSER_UA] => dv(XT1095);pr(UCBrowser/10.3.0.552);ov(Android 5.0);ss(360*592);pi(1080*1776);bt(GJ);pm(1);bv( 1);nm(0);im(0);sr(0);nt(1);dn(8664342047-3f9902 87);ai(720089404747345);

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var hasStorage = (function() { try { localStorage.setItem("test", "mod" ); localStorage.removeItem("test"); return true; } catch (exception) { if (exception && exception.name=="QuotaExceededError" && localStorage.length == 0) { return true; } else { return false; } return false; } }()); if( 'querySelector' in document && hasStorage && 'addEventListener' in window ){ //cuts the mustard }

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UCWEB/2.0 (MIDP-2.0; U; Adr 5.0; EN- US; XT1095) U2/1.0.0 UCBrowser/ 9.9.1.554 U2/1.0.0 Mobile

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[HTTP_X_UCBROWSER_UA] => dv(XT1095);pr(UCBrowser/ 10.3.0.552);ov(Android 5.0);ss(360*592);pi(1080*1776);bt(GJ) ;pm(1);bv(1);nm(0);im(0);sr(0);nt(1); dn(8664342047-3f990287);ai(7200894047 47345);

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DATA SAVINGS Up to 90% Up to 85% Up to 90% Up to 50%

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Progressive enhancement

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Progressive enhancement Responsive design

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Progressive enhancement Responsive design No heavy JS frameworks

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Progressive enhancement Responsive design No heavy JS frameworks Cut the mustard

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The journey begins by letting go of control, and becoming flexible. “ John Allsopp Dao of Web Design

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THANK YOU Tim Kadlec | @tkadlec