Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Anatomy of a responsive page load, Responsive D...
Search
Andy Hume
March 01, 2013
Technology
23
3.3k
Anatomy of a responsive page load, Responsive Day Out 2013
Make content appear fast on the screen. Presentation from Responsive Day Out 2013
Andy Hume
March 01, 2013
Tweet
Share
More Decks by Andy Hume
See All by Andy Hume
Architecting resilient front-ends, jQuery UK, 2015
andyhume
2
1.1k
Building for performance and resilience
andyhume
5
1.2k
Architecting resilient front ends
andyhume
3
830
Guardian Responsive Design, SmashingConf 2013
andyhume
6
630
Web Fonts as a Progressive Enhancement, Ampersand 2013
andyhume
2
760
Anatomy of a responsive page load, WhiskyWeb 2013
andyhume
10
1.9k
Breaking News & Breaking Software, SyncConf 2013
andyhume
0
270
Responsive Guardian
andyhume
21
1.1k
CSS for grown ups: maturing best practises, SXSW 2012
andyhume
101
47k
Other Decks in Technology
See All in Technology
低レイヤを知りたいPHPerのためのCコンパイラ作成入門 / Building a C Compiler for PHPers Who Want to Dive into Low-Level Programming
tomzoh
1
230
生成AIによるCloud Native基盤構築の可能性と実践的ガードレールの敷設について
nwiizo
5
360
Recap of Next - Google Cloud で実践する クラウドネイティブ最前線 / The Frontlines of Cloud-Native with Insights from Google Cloud
aoto
PRO
1
100
AWS全冠芸人が見た世界 ~資格取得より大切なこと~
masakiokuda
5
5.8k
ワールドカフェI /チューターを改良する / World Café I and Improving the Tutors
ks91
PRO
0
110
Amazon CloudWatch を使って NW 監視を行うには
o11yfes2023
0
150
新卒エンジニアがCICDをモダナイズしてみた話
akashi_sn
2
200
改めて学ぶ Trait の使い方 / phpcon odawara 2025
meihei3
1
660
AI AgentOps LT大会(2025/04/16) Algomatic伊藤発表資料
kosukeito
0
140
Mastraに入門してみた ~AWS CDKを添えて~
tsukuboshi
0
120
ブラウザのレガシー・独自機能を愛でる-Firefoxの脆弱性4選- / Browser Crash Club #1
masatokinugawa
1
460
DETR手法の変遷と最新動向(CVPR2025)
tenten0727
2
1.3k
Featured
See All Featured
Building an army of robots
kneath
304
45k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
34
2.9k
Speed Design
sergeychernyshev
29
900
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
13
670
The Invisible Side of Design
smashingmag
299
50k
Keith and Marios Guide to Fast Websites
keithpitt
411
22k
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
45
7.2k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
227
22k
GitHub's CSS Performance
jonrohan
1030
460k
Mobile First: as difficult as doing things right
swwweet
223
9.6k
Building a Scalable Design System with Sketch
lauravandoore
462
33k
Docker and Python
trallard
44
3.3k
Transcript
PAGE LOAD Andy Hume THE ANATOMY OF A Responsive Day
Out, 2013 RESPONSIVE
Text
Content-Encoding: gzip Cache-Control: max-age=315360000
Content-Encoding: gzip Cache-Control: max-age=315360000 OK. NOW WE CAN TALK
http://www.flickr.com/photos/freefoto/2231356418/ Performance
page load time PERFORMANCE bandwidth use battery life server capacity
fast interface reliability
page load time PERFORMANCE page load time bandwidth use battery
life server capacity fast interface reliability
Content THREE STAGES Enhancement Leftovers
Content THREE STAGES Enhancement Leftovers
Content THREE STAGES Enhancement Leftovers
Content THREE STAGES Enhancement Leftovers
Content Enhancement Leftovers
Content Enhancement Leftovers
Content Enhancement Leftovers
Content Enhancement Leftovers
Content Enhancement Leftovers DOMContentReady event
Content Enhancement Leftovers DOMContentReady event Load event
NO. 1 TRADE OFF http://www.flickr.com/photos/funkypancake/477244177/ Trade-off: Script loading
SCRIPT LOADING <script> var script = document.createElement('script'); script.src = "app.js";
document.head.appendChild(script); </script>
SCRIPT LOADING <script src="app.js" async defer></script>
SCRIPT LOADING appendChild(script) <script async> HTML CSS JAVASCRIPT HTML CSS
JAVASCRIPT
DOMContentReady event Load event Content Enhancement Leftovers
DOMContentReady event Load event Content Enhancement Leftovers
<script> if (isModernBrowser()) { var s = document.createElement('script'); s.src =
"app.js"; document.head.appendChild(script); } </script> CUTTING THE MUSTARD
DOMContentReady event Load event Content Enhancement Leftovers
@if(isModernBrowser) { <script src="app.js" async defer></script> } CUTTING THE MUSTARD
DOMContentReady event Load event Content Enhancement Leftovers
DOMContentReady event Load event Content Enhancement Leftovers
http://www.flickr.com/photos/number10gov/4600963461/ Trade-off: CSS download
CSS DOWNLOAD <link href="main.css" rel="stylesheet" /> <!-- For larger viewports
--> <link href="larger.css" media="screen and (min-width: 350px)" rel="stylesheet" />
CSS DOWNLOAD <link href="main.css" rel="stylesheet" /> @if(isWideDevice()) { <link href="larger.css"
media="screen and (min-width: 350px)" rel="stylesheet" /> }
RESPONSIVE SERVER
RESPONSIVE SERVER Relies on device detection DeviceAtlas, WURFL RESS
NO. 3 ( 4) TRADE OFF http://www.flickr.com/photos/harikrishnanb/4264996356/ Trade-off: Web fonts
http://www.flickr.com/photos/spacemanbob/1084139169/ Web fonts
FONT LOADING Progressive enhancement
FONT LOADING Progressive enhancement Cuts the mustard
FONT LOADING Progressive enhancement Cuts the mustard Supports WOFF
FONT LOADING Progressive enhancement Cuts the mustard Supports WOFF localStorage
available
PRE-RENDER CUT THE MUSTARD? NO FONTS SHOW FONTS NO NO
SUPPORT WOFF? FONTS IN STORAGE? NO
POST-RENDER STORAGE AVAILABLE? NO FONTS SHOW FONTS NO DOWNLOAD FONTS:
BASE64 ENCODED IN JSON CACHE FONTS IN STORAGE
POST-RENDER STORAGE AVAILABLE? NO FONTS SHOW FONTS NO DOWNLOAD FONTS:
BASE64 ENCODED IN JSON CACHE FONTS IN STORAGE
http://www.flickr.com/photos/zigazou76/4412946911/ Trade-off: Images
RESPONSIVE IMAGES
Why media queries? THE FUTURE Modules, patterns, systems, components, OOCSS,
SMACSS, Standalone Viewport is irrelevant
Why media queries? THE FUTURE Modules, patterns, systems, components, OOCSS,
SMACSS, Standalone Viewport is irrelevant
RESPONSIVE IMAGES <picture alt="Describes the image."> <source src="s.jpg"> <source media="(min-width:320px)"
src="m.jpg"> </picture>
RESPONSIVE IMAGES <div data-alt="Describes the image." data-src="small.jpg" data-src-high="large.jpg" data-width="180" data-height="100"
> </div>
None
None
PERFORMANCE RESPONSIVE
PERFORMANCE
Thank-you! http://lanyrd.com/scdtfx @andyhume Creative Commons Licensed Attribution, Non-Commercial, Share Alike
cc