The document discusses future image formats for use in email. It examines formats such as SVG, WEBP, and HEIF, providing information on their file sizes, browser support, and how to implement fallback options. The document also covers techniques for responsive images, image manipulation with CSS, and tips for image optimization and load performance. Overall, the document provides an overview of emerging and established image formats and how to use them effectively in email for smaller file sizes and wider browser support.
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The future of images in email - Litmus live London 2017
1. THE FUTURE OF IMAGES IN EMAIL
Mark Robbins
REBEL
@M_J_Robbins | @GoRebelmail
3. GIF
est. 1987
Use for: at colours,
animations, etc.
JPG
est. 1992
Use for: gradient colours,
photos, etc.
PNG
est. 1995
Use for: transparent
images, etc.
12. iOS
Gmail
iPad
Applemail
Outlook
Samsung
Outlook.com
Android
Yahoo
Windows live
Supported:40%
Fallback:0%
Unsupported:56%
WEBP SUPPORT IN TOP 10 CLIENTS
22. QUICK OPTIMISATION TIPS
Use image compression - ImageOptim, TinyPNG
Use a CDN (Content Delivery Network) - Cloudinary, imgix
Avoid unnecessary <img> tags
23. HOW TO REPLACE AN IMAGE
Bad example
<img src=/slideshow/the-future-of-images-in-email-litmus-live-london-2017/79318082/"/100kb.jpg" class="desktop">
<img src="/80kb.jpg" class="mobile" style="display:none">
24. HOW TO REPLACE AN IMAGE
Load optimised example
<img src=/slideshow/the-future-of-images-in-email-litmus-live-london-2017/79318082/"/100kb.jpg" class="desktop">
<div></div>
25. HOW TO REPLACE AN IMAGE
Accessible example
<img src=/slideshow/the-future-of-images-in-email-litmus-live-london-2017/79318082/"/100kb.jpg" class="desktop" alt="alt text">
<div role="img" aria-label="alt text" style="display:none"></div>
46. WE DIDN'T HAVE TIME FOR...
Multiple background images on single element
Animating background images
CSS images
Inline SVG & Animating SVG
< gure> & < gcaption>
Dynamic alt text for dynamic images
Image sprites
Image fonts
HTTP2
OS and Browser support