The Big Picture: Responsive Images in Action #scd14

Although responsive designs are already state-of-the-art in web development the whole trend still is in its infancy. When it comes to images, a lot of responsive websites just load the same big image on every viewport. Because of this, people judge responsive design as being detrimental to performance. New markup elements like are in development right now but what are the alternatives, what is the best to use right now, and how do they work? I will lead you through the different techniques and polyfills and show you their pros and cons. After this talk you should be able to choose the best fitting responsive image solution for your project.

Transcript

1. THE BIG PICTURE . responsive images in action PRESENTED BY MATTHIAS LAU
2. { name: "Matthias Lau", link: "http://laumatthias.de", twitter: "@matthiaslau", hometown: { name: "Hamburg, Germany" }, bio: "E-Commerce Freak and Web-Allrounder, love coding, awesome internet concepts, Chrome, Web Frameworks, Evernote, the Apple Multi-Touch Trackpad, Bouldering, Wikipedia and Espresso.", }
5. A LOT! OPTIMIZED THEY
6. ! FOR SMALL VIEWPORTS LARGE IMAGES STILL...
7. RESPONSIVE DESIGN RESPONSIBLE
8. ! WANT! WE WHAT
9. IMAGES OPTIMIZED
10. IMAGES OPTIMIZED
11. IMAGES OPTIMIZED
12. ! DIRECTION ART
15. ! IMAGES FAST
16. ! JAVASCRIPT IT SHOULD ALSO WORK WITHOUT
17. CACHING / CDN
18. <img  src="/img/funny-­‐cat.jpg"> ! CODE SIMPLE
19. <object  data="data:image/svg+xml,%3Csvg %20viewBox='0%200%20300%20329'%20preserveAspectRatio='xMidYMid %20meet'%20xmlns='http://www.w3.org/2000/svg'%3E%3Ctitle%3EIguazu%20Waterfalls%3C/ title%3E%3Cstyle%3Esvg%7Bbackground-­‐size:100%25%20auto;background-­‐repeat:no-­‐repeat; %7D@media%20screen%20and%20(max-­‐width:300px)%7Bsvg%7Bbackground-­‐image:url(http:// localhost:8010/responsive_images/img/small.jpg);%7D%7D@media%20screen%20and%20(min-­‐ width:301px)%7Bsvg%7Bbackground-­‐image:url(http://localhost:8010/responsive_images/ img/medium.jpg);%7D%7D@media%20screen%20and%20(min-­‐width:601px)%7Bsvg%7Bbackground-­‐ image:url(http://localhost:8010/responsive_images/img/big.jpg);%7D%7D@media%20screen %20and%20(min-­‐width:901px)%7Bsvg%7Bbackground-­‐image:url(http://localhost:8010/ responsive_images/img/huge.jpg);%7D%7D%3C/style%3E%3C/svg%3E"  type="image/svg+xml">          <!-­‐-­‐  IE8  fallback  -­‐-­‐>          <!-­‐-­‐[if  lte  IE  8]>          <img  src="../img/medium.jpg"  alt="Iguazu  Waterfalls">          <![endif]-­‐-­‐>   </object> ! ANYMORE SIMPLE NOT
20. TECHNIQUES RESPONSIVE IMAGE http://matthiaslau.github.io/responsive-images/
21. SVG´s USE
22. BACKGROUNDS CSS
23. BACKGROUNDS CSS #iguazu  {        background-­‐image:  url(small.jpg);   }   @media  screen  and  (min-­‐width:  40em)  {        #iguazu  {              background-­‐image:  url(medium.jpg);        }   }
24. SIMPLE CODE FAST NOJS CACHING / CDN ART DIRECTION
25. IT IS A CSS IMAGE
26. <div  id="iguazu"  role="img"  aria-­‐label="Iguazu"></div> ACCESSIBILITY
27. CARS CLOWN
28. <img  src="iguazu.svg"  alt="Iguazu  Waterfalls">
29. <svg  xmlns='http://www.w3.org/2000/svg'>        <title>Iguazu  Waterfalls</title>        <style>              @media  screen  and  (min-­‐width:21em){                    svg{                          background-­‐image:url(http:// matthiaslau.github.io/responsive-­‐images/img/medium.jpg);                    }              }              @media  screen  and  (min-­‐width:40em){                    […]              }        </style>   </svg>
30. <!-­‐-­‐  use  the  object  tag  for  maximal  browser  support  without   security  drawbacks  -­‐-­‐>   <!-­‐-­‐  put  the  SVG  data  inline  to  prevent  a  second  HTTP   request  -­‐-­‐>   <object  data="data:image/svg+xml,%3Csvg%20viewBox=[…]"   type="image/svg+xml">          <!-­‐-­‐  IE8  fallback  -­‐-­‐>          <!-­‐-­‐[if  lte  IE  8]>          <img  src="medium.jpg"  alt="Iguazu  Waterfalls">          <![endif]-­‐-­‐>   </object>
31. SIMPLE CODE FAST NOJS CACHING / CDN ART DIRECTION
32. ADAPTIVE IMAGES RESS / http://adaptive-images.com/
33. JS Cookie viewport width
34. .htaccess image request Scaling Logic best fitting image Cookie
35. SIMPLE CODE FAST NOJS CACHING / CDN ART DIRECTION
36. RESIZING SERVICES
37. http://src.sencha.io/320/200/http://[...]/huge-­‐hd.jpg RESIZING SERVICES http://www.sencha.com/learn/how-to-use-src-sencha-io/
38. <script  src='http://src.sencha.io/screen.js'></script>   ! <img          src='http://src.sencha.io/wiw/http://[...]/huge-­‐ hd.jpg'          alt='Iguazu  Waterfalls'          /> RESIZING SERVICES
39. SIMPLE CODE FAST NOJS CACHING / CDN ART DIRECTION
40. ELEMENT PICTURE SRCSET +
41. <img  alt="Iguazu"                    src="medium.jpg"                    srcset="medium.jpg  1x,  medium-­‐2x.jpg  2x">
42. <picture>          <source  media="(min-­‐width:  40em)"  src="medium.jpg">          <!-­‐-­‐  fallback  img  -­‐-­‐>          <img  src="medium.jpg"  alt="Iguazu">   </picture>
43. <picture>        <source  media="(min-­‐width:  50em)"   srcset="large.jpg  1x,  large-­‐2x.jpg  2x">          <source  media="(min-­‐width:  40em)"   srcset="medium.jpg  1x,  medium-­‐2x.jpg  2x">          <source  srcset="small.jpg,  small-­‐2x.jpg  2x">          <img  src="small.jpg"  alt="Iguazu">   </picture>
44. THE FANCY STUFF LET´S DO ALL
45. VIEWPORT SIZE IS NOT BLOCK SIZE excursion:
47. <picture>      <source          sizes="(max-­‐width:  30em)  100vw,  (max-­‐width:   50em)  50vw,  calc(33vw  -­‐  100px)"          srcset="xsmall.jpg  100w,  small.jpg  200w,   medium.jpg  400w,  large.jpg  800w,  huge.jpg  1600w,   monster.jpg  3200w">      <img  src="medium.jpg"  alt="Iguazu">   </picture>
48. <3
49. SIMPLE CODE FAST NOJS CACHING / CDN ART DIRECTION
50. NO BROWSER SUPPORT YET
53. PICTUREFILL https://github.com/scottjehl/picturefill
54. SIMPLE CODE FAST NOJS CACHING / CDN ART DIRECTION
55. MORE THERE IS EVEN HiSRC Foresight.js Riloadr rwdImages Retina.js Responsive Enhance Doubletake Content Aware Resizing https://docs.google.com/spreadsheet/ccc?key=0Al0lI17fOl9DdDgxTFVoRzFpV3VCdHk2NTBmdVI2OXc#gid=0 Mobify..js
56. WHAT? a summary NOW
57. „Don't click this if on a 3G network, it probably take forever, just check it out when you get home.“
58. SOMETHING USE please
59. WHERE POSSIBLE CSS IMAGES OTHER PICTUREFILL + SVG´s
64. CONTEXT-BASED IMAGES forecast:
65. IMAGES E-COMMERCE
71. QUESTIONS? http://twitter.com/matthiaslau http://laumatthias.de/ https://www.xing.com/profile/Matthias_Lau
72. PROCESS THE with grunt
73. grunt original
74. https://github.com/andismith/grunt-responsive-images options:  {        sizes:  [              {                    name:  "s",                    width:  320,                    quality:  0.6              },              {                    name:  "s",                    suffix:  "x2",                    width:  640,                    quality:  0.6              },          […]                                                    ]   }, files:  [{        expand:  true,        cwd:  'img/',        src:  ['*.{jpg,gif,png}'],        dest:  'img/generated/'   }]