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
1.2k
Building for performance and resilience
andyhume
5
1.2k
Architecting resilient front ends
andyhume
3
880
Guardian Responsive Design, SmashingConf 2013
andyhume
6
660
Web Fonts as a Progressive Enhancement, Ampersand 2013
andyhume
2
780
Anatomy of a responsive page load, WhiskyWeb 2013
andyhume
10
1.9k
Breaking News & Breaking Software, SyncConf 2013
andyhume
0
290
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
dbt開発 with Claude Codeのためのガードレール設計
10xinc
2
1.3k
開発者を支える Internal Developer Portal のイマとコレカラ / To-day and To-morrow of Internal Developer Portals: Supporting Developers
aoto
PRO
1
470
実践!カスタムインストラクション&スラッシュコマンド
puku0x
0
480
Webアプリケーションにオブザーバビリティを実装するRust入門ガイド
nwiizo
7
860
Django's GeneratedField by example - DjangoCon US 2025
pauloxnet
0
150
Terraformで構築する セルフサービス型データプラットフォーム / terraform-self-service-data-platform
pei0804
1
190
【実演版】カンファレンス登壇者・スタッフにこそ知ってほしいマイクの使い方 / 大吉祥寺.pm 2025
arthur1
1
890
人工衛星のファームウェアをRustで書く理由
koba789
15
8.2k
まずはマネコンでちゃちゃっと作ってから、それをCDKにしてみよか。
yamada_r
2
120
新規プロダクトでプロトタイプから正式リリースまでNext.jsで開発したリアル
kawanoriku0
1
160
RSCの時代にReactとフレームワークの境界を探る
uhyo
10
3.5k
【NoMapsTECH 2025】AI Edge Computing Workshop
akit37
0
220
Featured
See All Featured
Building Flexible Design Systems
yeseniaperezcruz
329
39k
Embracing the Ebb and Flow
colly
87
4.8k
GraphQLの誤解/rethinking-graphql
sonatard
72
11k
Six Lessons from altMBA
skipperchong
28
4k
Why Our Code Smells
bkeepers
PRO
339
57k
BBQ
matthewcrist
89
9.8k
Making Projects Easy
brettharned
117
6.4k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
285
13k
Design and Strategy: How to Deal with People Who Don’t "Get" Design
morganepeng
131
19k
Designing Dashboards & Data Visualisations in Web Apps
destraynor
231
53k
How to Think Like a Performance Engineer
csswizardry
26
1.9k
Facilitating Awesome Meetings
lara
55
6.5k
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