This document summarizes Christopher Schmitt's presentation on adaptive images in responsive web design. The presentation discusses:
1) Using feature testing and media queries to determine screen width and resolution instead of browser sniffing
2) Techniques for serving adaptive images, including .htaccess redirects, srcset, picture, and JavaScript libraries
3) Workarounds like background-size: 100% and SVG when native image solutions don't work
Smartphones and tablets not only contain more computing power and better browsers than the computers that started the Internet economy. They also have better displays, which demands more of us when we use images. This session will work through tips and tricks to develop future friendly images in our sites and apps.
[CSSDevConf] Adaptive Images in Responsive Web Design 2014Christopher Schmitt
Ā
The web doesn't stop at the desktop anymore. Our image assets need to do more than look good in one context. In this talk, I look at how images like JPEG, GIFs, SVG, Icons, Unicode, and more can be used in a multi-device environment.
Smartphones and tablets not only contain more computing power and better browsers than the computers that started the Internet economy. They also have better displays, which demands more of us when we use images. This session will work through tips and tricks to develop future friendly images in our sites and apps.
[CSSDevConf] Adaptive Images in Responsive Web Design 2014Christopher Schmitt
Ā
The web doesn't stop at the desktop anymore. Our image assets need to do more than look good in one context. In this talk, I look at how images like JPEG, GIFs, SVG, Icons, Unicode, and more can be used in a multi-device environment.
Technical Tips: Visual Regression Testing and Environment Comparison with Bac...Building Blocks
Ā
As a Front End Web Developer, experimenting with new tools to add to your workflow (and going down the rabbit hole with them!) is all part and parcel of refining your craft. Chris Eccles, Technical Manager at Building Blocks has been doing just this and has some invaluable insight into CSS Visual Regression using Backstop.JS.
CSS Visual Regression testing is the process of running automated visual test comparisons on pages or elements in your projects. Using Backstop.JS, Chris has discovered that this tool is intuitive, allowing quick configuration to allow you to get up and rolling quickly.
Backstop.JS serves your tests via a webpage which gives you the visual feedback needed for targeting bugs caused from CSS related issues. These comparisons can uncover bugs youād otherwise not learn about until itās too late. A very useful tool to have in your Front End arsenal, wouldnāt you agree?
Chris has been sharing his insights with the BB team and wanted to share with our blog readers also. So, sit back and enjoy the ride through the wonderful world of Backstop.JS.
As browsers explode with new capabilities and migrate onto devices users can be left wondering, āwhatās taking so long?ā Learn how HTML, CSS, JavaScript, and the web itself conspire against a fast-running application and simple tips to create a snappy interface that delight users instead of frustrating them.
Responsive Webdesign is much more than squishing containers and setting breakpoints. Performance is often a big problem. How to achieve performance with progressive enhancement, conditional loading and RESS. Original Slideshow: http://maddesigns.de/responsive-enhancement/
Which would you rather have: A rich design or a fast user experience? Users want both, but sometimes the interplay between design and performance feels like a fixed sum game: One sideās gain is the other sideās loss. Design and performance are indeed connected, but itās more like the yin and yang. They arenāt opposing forces, but instead complement each other. Users want an experience that is rich and fast. The trick for us as designers and developers is figuring out how to do that.
The answer is to adopt an approach that considers both design and performance from the outset. With this approach, designs are conceived by teams of designers and developers working together. Developers benefit by participating in the product definition process. Designers benefit from understanding more about how designs are implemented. Thereās an emphasis on early prototyping and tracking performance from the get-go.
With new metrics that focus on what a user actually sees as the page loads, we can now bridge the technical and language gaps that have hindered the seamless creation of great user experiences. In this presentation, Steve Souders, former Chief Performance Yahoo! and Google head performance engineer, explains how promoting a process that brings design and performance together at the beginning of a project helps deliver a web experience that is both fast and rich.
Google I/O 2012 - Protecting your user experience while integrating 3rd party...Patrick Meenan
Ā
The amount of 3rd-party content included on websites is exploding (social sharing buttons, user tracking, advertising, code libraries, etc). Learn tips and techniques for how best to integrate them into your sites without risking a slower user experience or even your sites becoming unavailable.
Video is available here: http://www.youtube.com/watch?v=JB4ulhFFdH4&feature=plcp
Technical Tips: Visual Regression Testing and Environment Comparison with Bac...Building Blocks
Ā
As a Front End Web Developer, experimenting with new tools to add to your workflow (and going down the rabbit hole with them!) is all part and parcel of refining your craft. Chris Eccles, Technical Manager at Building Blocks has been doing just this and has some invaluable insight into CSS Visual Regression using Backstop.JS.
CSS Visual Regression testing is the process of running automated visual test comparisons on pages or elements in your projects. Using Backstop.JS, Chris has discovered that this tool is intuitive, allowing quick configuration to allow you to get up and rolling quickly.
Backstop.JS serves your tests via a webpage which gives you the visual feedback needed for targeting bugs caused from CSS related issues. These comparisons can uncover bugs youād otherwise not learn about until itās too late. A very useful tool to have in your Front End arsenal, wouldnāt you agree?
Chris has been sharing his insights with the BB team and wanted to share with our blog readers also. So, sit back and enjoy the ride through the wonderful world of Backstop.JS.
As browsers explode with new capabilities and migrate onto devices users can be left wondering, āwhatās taking so long?ā Learn how HTML, CSS, JavaScript, and the web itself conspire against a fast-running application and simple tips to create a snappy interface that delight users instead of frustrating them.
Responsive Webdesign is much more than squishing containers and setting breakpoints. Performance is often a big problem. How to achieve performance with progressive enhancement, conditional loading and RESS. Original Slideshow: http://maddesigns.de/responsive-enhancement/
Which would you rather have: A rich design or a fast user experience? Users want both, but sometimes the interplay between design and performance feels like a fixed sum game: One sideās gain is the other sideās loss. Design and performance are indeed connected, but itās more like the yin and yang. They arenāt opposing forces, but instead complement each other. Users want an experience that is rich and fast. The trick for us as designers and developers is figuring out how to do that.
The answer is to adopt an approach that considers both design and performance from the outset. With this approach, designs are conceived by teams of designers and developers working together. Developers benefit by participating in the product definition process. Designers benefit from understanding more about how designs are implemented. Thereās an emphasis on early prototyping and tracking performance from the get-go.
With new metrics that focus on what a user actually sees as the page loads, we can now bridge the technical and language gaps that have hindered the seamless creation of great user experiences. In this presentation, Steve Souders, former Chief Performance Yahoo! and Google head performance engineer, explains how promoting a process that brings design and performance together at the beginning of a project helps deliver a web experience that is both fast and rich.
Google I/O 2012 - Protecting your user experience while integrating 3rd party...Patrick Meenan
Ā
The amount of 3rd-party content included on websites is exploding (social sharing buttons, user tracking, advertising, code libraries, etc). Learn tips and techniques for how best to integrate them into your sites without risking a slower user experience or even your sites becoming unavailable.
Video is available here: http://www.youtube.com/watch?v=JB4ulhFFdH4&feature=plcp
Longform or Shortform? How to Decide on the Right Format of ContentBrian Honigman
Ā
The purpose of this piece will be to show that longform and shortform content are equally valuable, and the utility of either is maximized when you know where, when and how to use each.
Christopher Schmitt, "Adaptive Images for Responsive Web Design"WebVisions
Ā
The open web doesn't stop at our desktop. Smart phones and tablets not only contain more computing power and better browsers than the computers that started the Internet economy, they have better displays.
Presented at WebVisions Barcelona 2013.
The Big Picture: Responsive Images in Action #scd14Matthias Lau
Ā
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 <picture> 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.
The Evolution of CGM (Computer Graphics Metafile) Viewing. The objective of the workshop is to provide you with all the information required to implement our evolutionary technology.
The Evolution of CGM (Computer Graphics Metafile) Viewing. The objective of the workshop is to provide you with all the information required to implement our evolutionary technology.
Organizations focus process optimization of
Data Tier
Application Tier
Presentation Tier is usually ignored.
Presentation Tier is responsible for more than 30% of Client/Server application performance.
Website speed is a crucial aspect of on page SEO everyone can control. Your goal is to be interactive in under 3 seconds, even on a basic phone over a 3G connection.
However, most web sites have so many requests and large payloads this time limit or budget cannot be achieved. In fact, the average web page takes 22 seconds to load, according to Google's research.
But what if I told you there is a way to offload or even avoid loading page assets until they are needed?
This can give your website a distinct advantage over your competition because not only will Google like your pages better so will your visitors!
implement lighthouse-ci with your web development workflowWordPress
Ā
This presentation is about implementing the performance as first approach in web development and a bit of real case study. Then implement the Lighthouse-CI in the development workflow to keep the site performance high.
In the beginning, progressive enhancement was simple: HTML layered with CSS layered with JavaScript. That worked fine when there were two browsers, but in today's world of multiple devices and multiple browsers, it's time for a progressive enhancement reboot. At the core is the understanding that the web is not print - the same rules don't apply. As developers and consumers we've been fooled into thinking about print paradigms for too long. In this talk, you'll learn just how different the web is and how the evolution of progressive enhancement can lead to better user experiences as well as happier developers and users.
This deck is a conference-agnostic one, suitable to be shown anywhere without site-specific jokes!
Stefan Judis "Did we(b development) lose the right direction?"Fwdays
Ā
Keeping up with the state of web technology is one of the biggest challenges for us developers today. We invent new tools; we define new best practices, everythingās new, always... And we do all that for good user experience! We do all that to build the best possible web ā itās all about our users.
But is it, really? Or do developers like to play with technology secretly loving the new and shiny? Or do we only pretend that itās about users, and behind closed doors, itās developer experience that matters to us? Did we lose direction? Is it time for a critical look at the state of the web and the role JavaScript plays in it?
Similar to [peachpit] Adaptive Images in Responsive Web Design (20)
Color creates a massive impact on how we tell users about our brands and products. Selecting the colors that reflect that is tough, but also making sure they are working is also essential.
After reviewing the foundations of color theory, how colors can harmonize, color schemes that reflect themes or ideas, Christopher explores the problems with working on digital color.
By examining how sites popular brands use color, we will discuss how colors fail their intended goals as well as for people with low or problematic vision. We will review rules and guidelines that help ensure our colors are visible and provide the proper intent to our customers.
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Ā
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Ā
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
Ā
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
Ā
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Ā
Clients donāt know what they donāt know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clientsā needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Ā
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overviewā
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
Ā
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Ā
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
21. Mozilla/5.0 (Macintosh; Intel Mac
OS X 10_7_3) AppleWebKit/
534.55.3 (KHTML, like Gecko)
Version/5.1.5 Safari/534.55.3
(cc) ļ¬ic.kr/p/vUBHv
http://www.useragentstring.com/
21
22. Mozilla/5.0 (Macintosh; Intel Mac
OS X 10_7_3) AppleWebKit/
534.55.3 (KHTML, like Gecko)
Version/5.1.5 Safari/534.55.3
http://webaim.org/blog/user-agent-string-history/
(cc) ļ¬ic.kr/p/vUBHv
22
38. [In 2013, Intel sees their
product line] oļ¬er a higher
resolution experience than a
top-of-the-line 1080p HDTV.ā
ā
http://liliputing.com/2012/04/intel-retina-laptop-
desktop-displays-coming-in-2013.html
38
48. Testing for speed of an
internet connection is like
stepping in front of a car to see
how fast it is.ā
ā
(cc) ļ¬ic.kr/p/4DziUN
48
49. Testing for speed of an
internet connection is like
stepping in front of a car to see
how fast it is.ā
ā
But, Christopher, you only
have to test it once.āā
(cc) ļ¬ic.kr/p/4DziUN
49
58. ...the server has no way to
know what resolution the
clientās device is, so it canāt
send the appropriately sized
embeded images.ā
ā
http://mattwilcox.net/archive/entry/id/1053/
58
62. media queries in HTML
<video controls>
<source type="video/mp4" src="video/windowsill_small.mp4"
media="all and (max-width: 480px), all and (max-device-width:
480px)">
<source type="video/webm" src="video/windowsill_small.webm"
media="all and (max-width: 480px), all and (max-device-width:
480px)">
<source type="video/mp4" src="video/windowsill.mp4">
<source type="video/webm" src="video/windowsill.webm">
<!-- proper fallback content goes here -->
</video>
http://www.w3.org/community/respimg/2012/03/15/polyļ¬lling-
picture-without-the-overhead/
62
63. <picture> patch
<picture alt="A giant stone face at The Bayon temple in Angkor Thom,
Cambodia">
<!-- <source src="small.jpg"> -->
<source src="small.jpg">
<!-- <source src="medium.jpg" media="(min-width: 400px)"> -->
<source src="medium.jpg" media="(min-width: 400px)">
<!-- <source src="large.jpg" media="(min-width: 800px)"> -->
<source src="large.jpg" media="(min-width: 800px)">
<!-- Fallback content for non-JS browsers. Same src as the initial
source element. -->
<noscript><img src="small.jpg" alt="A giant stone face at The Bayon
temple in Angkor Thom, Cambodia"></noscript>
</picture>
http://www.w3.org/community/respimg/2012/03/15/polyļ¬lling-
picture-without-the-overhead/
63
108. ...if you use <meta
charset="utf-8"> (you should
be for HTML5), youāre adding
common Unicode characters
like and ā, and you donāt
need a speciļ¬c fontās version...
just copy and paste them into
your HTML.ā
ā
108
123. iCloud iOS 5 OSX Lion iPad 2 iPhone
OS
The worldās most advanced desktop
operating system advances even further.
With over 250 new features including
Multi-Touch gestures, Mission Control,
full-screen apps, and Launchpad, OS X
Lion takes the Mac further than ever.
Learn More
X Lion
123
124. iCloud iOS 5 OSX Lion iPad 2 iPhone
OS
The worldās most advanced desktop
operating system advances even further.
With over 250 new features including
Multi-Touch gestures, Mission Control,
full-screen apps, and Launchpad, OS X
Lion takes the Mac further than ever.
Learn More
X Lion
!
" ā
ā
124
125. iCloud iOS 5 OSX Lion iPad 2 iPhone
OS
The worldās most advanced desktop
operating system advances even further.
With over 250 new features including
Multi-Touch gestures, Mission Control,
full-screen apps, and Launchpad, OS X
Lion takes the Mac further than ever.
Learn More
X Lion
! ā
" ā ā
ā ā ā
ā ā
125
126. iCloud iOS 5 OSX Lion iPad 2 iPhone
OS
The worldās most advanced desktop
operating system advances even further.
With over 250 new features including
Multi-Touch gestures, Mission Control,
full-screen apps, and Launchpad, OS X
Lion takes the Mac further than ever.
Learn More
X Lion
ā ā
ā " "
ā ! ā
! ā
126
130. Size Type Dimensions Display Px Density File Size
Extreme 2276x1400 1x & 2x 446kb
Extra
Large
1024x1536 2x 1,745kb
Extra
Large
512x768 1x 503kb
Large
640x960 2x 746kb
Large
320x480 1x 223kb
Medium
500x750 2x 485kb
Medium
250x375 1x 145kb
130
131. Size Type Dimensions Display Px Density File Size
Extreme 2276x1400 1x & 2x 446kb
Extra
Large
1024x1536 2x 1,745kb
Extra
Large
512x768 1x 503kb
Large
640x960 2x 746kb
Large
320x480 1x 223kb
Medium
500x750 2x 485kb
Medium
250x375 1x 145kb
131
132. <picture> Patch
<picture alt="A giant stone face at The Bayon temple in Angkor Thom,
Cambodia">
<!-- <source src="small.jpg"> -->
<source src="small.jpg">
<!-- <source src="medium.jpg" media="(min-width: 400px)"> -->
<source src="medium.jpg" media="(min-width: 400px)">
<!-- <source src="large.jpg" media="(min-width: 800px)"> -->
<source src="large.jpg" media="(min-width: 800px)">
<!-- Fallback content for non-JS browsers. Same src as the initial
source element. -->
<noscript><img src="small.jpg" alt="A giant stone face at The Bayon
temple in Angkor Thom, Cambodia"></noscript>
</picture>
http://www.w3.org/community/respimg/2012/03/15/polyļ¬lling-
picture-without-the-overhead/
132
142. <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 375 231"
preserveAspectRatio="xMidYMid meet" tabindex="-1"
aria-label="the aria label is being read" role="img"
title="the title attribute of the SVG is being read">
<title>Clown Car Technique</title>
<style>
</style>
</svg>
http://codepen.io/teleject/pen/KlzBe
Combo Move: SVG
142
143. <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 375 231"
preserveAspectRatio="xMidYMid meet" tabindex="-1"
aria-label="the aria label is being read" role="img"
title="the title attribute of the SVG is being read">
<title>Clown Car Technique</title>
<style>
</style>
<foreignObject>
<!--[if lte IE 8]>
<img src="../images/mobile-ļ¬rst.png" width="375" height="231"
alt="put alt attribute text here"/>
<![endif]-->
</foreignObject>
</svg>
http://codepen.io/teleject/pen/KlzBe
143