Explores progressive web apps, what advantages they have versus native apps, how to build, and test them, and some of the challenges we still have ahead.
Slides from talk at London Web Standards, Nov 2016
The Case for HTTP/2 - GreeceJS - June 2016Andy Davies
HTTP/2 is here but why do we need it, how is it different to HTTP/1.1 and what does the mean for developers?
Slides from my talk at GreeceJS in Athens, June 2016
Slides from my talk at NCC Group's Web Performance Day in May 2016.
Compares the features of apps and the web, what's great about each and explores some of the technologies that will allow us to build websites that can deliver native like experiences.
The Fast, The Slow and The Unconverted - Emerce Conversion 2016Andy Davies
Slides from my talk at Emerce Conversion, Amsterdam on the importance of performance(page speed) for conversion.
Explore some of the performance issues we face when relying on third-party CRO products / services
This document provides tips for optimizing images and video delivery on mobile websites to improve performance. It discusses reducing image file sizes through techniques like lowering quality levels, using optimized formats like WebP and SVG, resizing images responsively, and lazy loading images. For video, it recommends preloading, stripping audio from silent videos, resizing videos for mobile, and auditing third party videos. Testing and automation tools are also referenced. The overall message is that images and video can be both beautiful and fast with the right optimizations.
This document summarizes techniques for optimizing image delivery on mobile websites. It discusses 4 key optimizations: adjusting image quality, choosing optimal file formats like WebP, sizing images responsively, and lazy loading images below the fold. The document shows that these techniques can significantly reduce image file sizes and page load times based on analyses of 500,000 mobile sites. Specific tools are recommended for automating quality adjustments, format conversion, and responsive image breakpoint generation. Lazy loading is shown to improve user experience by deferring loading of off-screen images. Overall, the techniques can help images remain fast to load while retaining high quality for modern responsive delivery.
Devfest Siberia Fast and Beautiful Images and VideoDoug Sillars
This document provides an overview of optimizing images and video delivery for mobile websites. It discusses four simple image optimizations: adjusting quality, choosing optimal file formats like WebP and SVG, resizing images responsively, and lazy loading images. It also covers optimizing video delivery through techniques like preloading strategically, resizing background videos appropriately, minimizing third party dependencies, and configuring adaptive bitrate streaming. The goal is to reduce payload sizes and improve load performance.
This document discusses optimizing images and video for fast delivery on mobile websites. It provides 4 simple optimizations for images: quality, format, sizing, and lazy loading. For video, it recommends stripping audio from silent videos, resizing videos for mobile, and starting video streaming at lower bitrates. Testing tools mentioned include WebPageTest, HTTPArchive, ImageMagick, and libraries for lazy loading and responsive images. The overall message is that images and video can be both beautiful and fast with the right optimizations.
This document provides an overview of optimizing images and video for delivery on mobile devices. It discusses four main optimizations for images: quality, format, sizing, and lazy loading. For quality, it recommends using 85% quality for JPEG images. For format, it suggests using formats like WebP, SVG and responsive images. For sizing, it discusses generating responsive image sizes. For lazy loading, it covers techniques to delay loading images until they are visible. For video, it discusses optimizations like preloading, resizing video, removing audio from non-playing videos, and optimizing video delivery through techniques like manifest files and adaptive bitrate streaming.
The Case for HTTP/2 - GreeceJS - June 2016Andy Davies
HTTP/2 is here but why do we need it, how is it different to HTTP/1.1 and what does the mean for developers?
Slides from my talk at GreeceJS in Athens, June 2016
Slides from my talk at NCC Group's Web Performance Day in May 2016.
Compares the features of apps and the web, what's great about each and explores some of the technologies that will allow us to build websites that can deliver native like experiences.
The Fast, The Slow and The Unconverted - Emerce Conversion 2016Andy Davies
Slides from my talk at Emerce Conversion, Amsterdam on the importance of performance(page speed) for conversion.
Explore some of the performance issues we face when relying on third-party CRO products / services
This document provides tips for optimizing images and video delivery on mobile websites to improve performance. It discusses reducing image file sizes through techniques like lowering quality levels, using optimized formats like WebP and SVG, resizing images responsively, and lazy loading images. For video, it recommends preloading, stripping audio from silent videos, resizing videos for mobile, and auditing third party videos. Testing and automation tools are also referenced. The overall message is that images and video can be both beautiful and fast with the right optimizations.
This document summarizes techniques for optimizing image delivery on mobile websites. It discusses 4 key optimizations: adjusting image quality, choosing optimal file formats like WebP, sizing images responsively, and lazy loading images below the fold. The document shows that these techniques can significantly reduce image file sizes and page load times based on analyses of 500,000 mobile sites. Specific tools are recommended for automating quality adjustments, format conversion, and responsive image breakpoint generation. Lazy loading is shown to improve user experience by deferring loading of off-screen images. Overall, the techniques can help images remain fast to load while retaining high quality for modern responsive delivery.
Devfest Siberia Fast and Beautiful Images and VideoDoug Sillars
This document provides an overview of optimizing images and video delivery for mobile websites. It discusses four simple image optimizations: adjusting quality, choosing optimal file formats like WebP and SVG, resizing images responsively, and lazy loading images. It also covers optimizing video delivery through techniques like preloading strategically, resizing background videos appropriately, minimizing third party dependencies, and configuring adaptive bitrate streaming. The goal is to reduce payload sizes and improve load performance.
This document discusses optimizing images and video for fast delivery on mobile websites. It provides 4 simple optimizations for images: quality, format, sizing, and lazy loading. For video, it recommends stripping audio from silent videos, resizing videos for mobile, and starting video streaming at lower bitrates. Testing tools mentioned include WebPageTest, HTTPArchive, ImageMagick, and libraries for lazy loading and responsive images. The overall message is that images and video can be both beautiful and fast with the right optimizations.
This document provides an overview of optimizing images and video for delivery on mobile devices. It discusses four main optimizations for images: quality, format, sizing, and lazy loading. For quality, it recommends using 85% quality for JPEG images. For format, it suggests using formats like WebP, SVG and responsive images. For sizing, it discusses generating responsive image sizes. For lazy loading, it covers techniques to delay loading images until they are visible. For video, it discusses optimizations like preloading, resizing video, removing audio from non-playing videos, and optimizing video delivery through techniques like manifest files and adaptive bitrate streaming.
This document provides an overview of optimizing images and video delivery for mobile websites. It discusses four image optimization techniques: reducing quality to 85%, using formats like WebP and SVG, resizing images responsively, and lazy loading. It also covers optimizing video delivery through techniques like preloading strategically, reducing background video size, using third-party players carefully, and providing multiple bitrate streams in manifest files. The goal is to reduce data usage and delays to improve the mobile user experience.
Doug Sillars presented on mobile and web performance optimization at the Dublin Tech Talks on July 10, 2018. He discussed how slow loading times negatively impact user experience and engagement. Sillars recommended tools like Video Optimizer and WebPageTest to audit performance, and emphasized optimizing delivery speed through content delivery networks and image/text compression. He also provided tips for optimizing images, videos, and animations to reduce payload sizes and startup delays. The goal is to create fast, rich mobile experiences for users.
Doug Sillars discusses optimizing images and video delivery for fast loading on mobile. He provides 4 simple optimizations for images: adjusting quality, format, sizing through responsive images, and lazy loading. For video, he examines startup delays and how to balance network load through adaptive bitrate streaming. Proper preloading and avoiding 3rd party interference can improve video start. Tools like WebPageTest and ImageMagick help optimize and measure performance.
This document discusses optimizing images and video for mobile delivery. It begins by noting that images and video make up 75% of web content. It then outlines four simple optimizations for images: quality, format, sizing, and lazy loading. For each optimization, it provides examples and data on usage. It finds that adjusting quality to 85%, using responsive images, and lazy loading can significantly improve performance. For video, it discusses startup time, buffering, file size reduction techniques like removing audio and resizing, and delivery via streaming. The overall message is that minor optimizations to images and especially video can have large impacts on mobile performance and user experience.
Why Progressive Web Apps will transform your websiteJason Grigsby
Progressive web apps (PWAs) can transform websites by making them more like native apps through the use of service workers, web app manifests, and other modern web capabilities. Some key benefits of PWAs include providing fast and reliable experiences even on slow mobile networks, working regardless of a network connection, and engaging users through web app banners and push notifications. Early results show that PWAs can significantly reduce data usage and increase user engagement, conversion rates, and sales compared to mobile websites. While PWAs work across browsers, including on iOS, their full capabilities are still progressively being adopted.
Progressive Web Applications are a new way to think about using the web to provide great user experiences using the best web platform features.
The education market has many opportunities to benefit their communities using PWAs to deliver information and application experiences across all devices and platforms.
This document discusses optimizing images and video delivery for mobile websites. It provides 4 simple optimizations for images: quality, format, sizing, and lazy loading. For image quality, it recommends 85% quality for most images. For format, it suggests using webp, svg, and jpeg. For sizing, it discusses using responsive images at different breakpoints. For lazy loading, it notes the performance benefits. It also covers optimizing video delivery through formats, sizing, preloading, and streaming using adaptive bitrates in the manifest file. The goal is to reduce file sizes, speed up loading, and improve the user experience on mobile.
This document discusses optimizing images and video for fast delivery on mobile websites. It provides four simple optimizations: adjusting image quality, format, sizing, and lazy loading. SVG, WebP and responsive images are recommended over other formats. Videos should be resized, have audio removed if unneeded, and only download what will be displayed. Background videos especially should be optimized for mobile screens. Network conditions and customer needs like data savings should also be considered. Tools like ImageMagick, Cloudinary and WebPageTest can help with optimizations.
The document discusses various techniques for optimizing web performance, including:
- Minifying assets like CSS, JavaScript, and images to reduce file sizes
- Leveraging caching, compression, and browser parallelization to speed up page loads
- Implementing responsive design patterns and techniques like image sprites and media queries
- Optimizing assets further with techniques like image optimization, lazy loading, and prefetching
The document discusses responsive images and issues around their implementation. It begins by outlining the new <picture> element and srcset/sizes attributes that allow images to adapt based on screen size and resolution. It then discusses challenges like managing many images, the need for image breakpoints to determine appropriate file sizes, and the tension between responsive images and the browser's lookahead parser. Overall, the document examines both the promise and difficulties of responsive images on the modern web.
This document summarizes Doug Sillars' presentation on optimizing mobile and web performance. It discusses using tools like Video Optimizer and WebPageTest to test performance. It then provides best practices for optimizing content delivery through techniques like image optimization, text compression, responsive images, lazy loading, and video streaming. Specific techniques covered include using Scalable Vector Graphics (SVG), WebP format, appropriate image sizes and quality levels, and optimizing video formats and manifest files.
Adaptive Input — Breaking Development Conference, San DiegoJason Grigsby
Windows 8. Chromebook Pixel. Ubuntu Phone. These devices shatter another consensual hallucination that we web developers have bought into: mobile = touch and desktop = keyboard and mouse.
We have tablets with keyboards; laptops that become tablets; laptops with touch screens; phones with physical keyboards; and even phones that become desktop computers. Not to mention new forms of input like cameras, voice control, and sensors.
We've learned how to respond to screen size. Our next challenge is learning how to adapt to different forms of input.
This document discusses techniques for optimizing image delivery on websites for faster performance. It outlines four simple optimizations: adjusting image quality, choosing optimal file formats like WebP and SVG, sizing images responsively, and lazy loading images below the fold. The document shows how these techniques can significantly reduce image file sizes and page load times based on analyzing 500,000 mobile websites. Common tools for implementing the optimizations are also presented.
Presented at Web Directions Code, Melbourne
If you have a website—particularly one that generates revenue for your organization—you need a Progressive Web App. So where do you begin? How do you decide which features of a Progressive Web App make sense for your users? What tools can make the process easier (or harder)? In this practical session, Jason will guide you through the key design decisions you’ll need to make about your Progressive Web App and how those decisions impact the scope of your project. He'll also teach you how to avoid common pitfalls and help you take full advantage of Progressive Web App technology.
The document discusses optimizing images for faster page loads and better user experience. It outlines four simple image optimizations: 1) reducing image quality to 85%, 2) using newer formats like WebP and SVG that compress smaller, 3) sizing images appropriately for different screen sizes through responsive images, and 4) lazy loading images below the fold. Implementing these optimizations across 500,000 mobile sites showed median savings of 2.83 seconds faster load time and 419KB less data. The document provides examples and tools to implement each optimization.
This document discusses various topics related to developing web apps, including HTML5, responsive design, touch events, offline capabilities, and debugging tools. It provides links to resources on HTML5 features like media queries, SVG, web workers, and the page visibility API. It also covers techniques for adapting content like responsive web design, progressive enhancement, and server-side adaptation. Mobile browser stats and popular devices on Douban are mentioned. Frameworks like Bootstrap and tools like Weinre for debugging mobile apps are referenced.
Mobile Web Performance - Getting and Staying FastAndy Davies
Slides from mine and Aaaron Peter's talk at QCon London (Mar 2014) on how to measure mobile web performance, things that affect in and how to improve it
This document provides an overview of optimizing images and video delivery for mobile websites. It discusses four image optimization techniques: reducing quality to 85%, using formats like WebP and SVG, resizing images responsively, and lazy loading. It also covers optimizing video delivery through techniques like preloading strategically, reducing background video size, using third-party players carefully, and providing multiple bitrate streams in manifest files. The goal is to reduce data usage and delays to improve the mobile user experience.
Doug Sillars presented on mobile and web performance optimization at the Dublin Tech Talks on July 10, 2018. He discussed how slow loading times negatively impact user experience and engagement. Sillars recommended tools like Video Optimizer and WebPageTest to audit performance, and emphasized optimizing delivery speed through content delivery networks and image/text compression. He also provided tips for optimizing images, videos, and animations to reduce payload sizes and startup delays. The goal is to create fast, rich mobile experiences for users.
Doug Sillars discusses optimizing images and video delivery for fast loading on mobile. He provides 4 simple optimizations for images: adjusting quality, format, sizing through responsive images, and lazy loading. For video, he examines startup delays and how to balance network load through adaptive bitrate streaming. Proper preloading and avoiding 3rd party interference can improve video start. Tools like WebPageTest and ImageMagick help optimize and measure performance.
This document discusses optimizing images and video for mobile delivery. It begins by noting that images and video make up 75% of web content. It then outlines four simple optimizations for images: quality, format, sizing, and lazy loading. For each optimization, it provides examples and data on usage. It finds that adjusting quality to 85%, using responsive images, and lazy loading can significantly improve performance. For video, it discusses startup time, buffering, file size reduction techniques like removing audio and resizing, and delivery via streaming. The overall message is that minor optimizations to images and especially video can have large impacts on mobile performance and user experience.
Why Progressive Web Apps will transform your websiteJason Grigsby
Progressive web apps (PWAs) can transform websites by making them more like native apps through the use of service workers, web app manifests, and other modern web capabilities. Some key benefits of PWAs include providing fast and reliable experiences even on slow mobile networks, working regardless of a network connection, and engaging users through web app banners and push notifications. Early results show that PWAs can significantly reduce data usage and increase user engagement, conversion rates, and sales compared to mobile websites. While PWAs work across browsers, including on iOS, their full capabilities are still progressively being adopted.
Progressive Web Applications are a new way to think about using the web to provide great user experiences using the best web platform features.
The education market has many opportunities to benefit their communities using PWAs to deliver information and application experiences across all devices and platforms.
This document discusses optimizing images and video delivery for mobile websites. It provides 4 simple optimizations for images: quality, format, sizing, and lazy loading. For image quality, it recommends 85% quality for most images. For format, it suggests using webp, svg, and jpeg. For sizing, it discusses using responsive images at different breakpoints. For lazy loading, it notes the performance benefits. It also covers optimizing video delivery through formats, sizing, preloading, and streaming using adaptive bitrates in the manifest file. The goal is to reduce file sizes, speed up loading, and improve the user experience on mobile.
This document discusses optimizing images and video for fast delivery on mobile websites. It provides four simple optimizations: adjusting image quality, format, sizing, and lazy loading. SVG, WebP and responsive images are recommended over other formats. Videos should be resized, have audio removed if unneeded, and only download what will be displayed. Background videos especially should be optimized for mobile screens. Network conditions and customer needs like data savings should also be considered. Tools like ImageMagick, Cloudinary and WebPageTest can help with optimizations.
The document discusses various techniques for optimizing web performance, including:
- Minifying assets like CSS, JavaScript, and images to reduce file sizes
- Leveraging caching, compression, and browser parallelization to speed up page loads
- Implementing responsive design patterns and techniques like image sprites and media queries
- Optimizing assets further with techniques like image optimization, lazy loading, and prefetching
The document discusses responsive images and issues around their implementation. It begins by outlining the new <picture> element and srcset/sizes attributes that allow images to adapt based on screen size and resolution. It then discusses challenges like managing many images, the need for image breakpoints to determine appropriate file sizes, and the tension between responsive images and the browser's lookahead parser. Overall, the document examines both the promise and difficulties of responsive images on the modern web.
This document summarizes Doug Sillars' presentation on optimizing mobile and web performance. It discusses using tools like Video Optimizer and WebPageTest to test performance. It then provides best practices for optimizing content delivery through techniques like image optimization, text compression, responsive images, lazy loading, and video streaming. Specific techniques covered include using Scalable Vector Graphics (SVG), WebP format, appropriate image sizes and quality levels, and optimizing video formats and manifest files.
Adaptive Input — Breaking Development Conference, San DiegoJason Grigsby
Windows 8. Chromebook Pixel. Ubuntu Phone. These devices shatter another consensual hallucination that we web developers have bought into: mobile = touch and desktop = keyboard and mouse.
We have tablets with keyboards; laptops that become tablets; laptops with touch screens; phones with physical keyboards; and even phones that become desktop computers. Not to mention new forms of input like cameras, voice control, and sensors.
We've learned how to respond to screen size. Our next challenge is learning how to adapt to different forms of input.
This document discusses techniques for optimizing image delivery on websites for faster performance. It outlines four simple optimizations: adjusting image quality, choosing optimal file formats like WebP and SVG, sizing images responsively, and lazy loading images below the fold. The document shows how these techniques can significantly reduce image file sizes and page load times based on analyzing 500,000 mobile websites. Common tools for implementing the optimizations are also presented.
Presented at Web Directions Code, Melbourne
If you have a website—particularly one that generates revenue for your organization—you need a Progressive Web App. So where do you begin? How do you decide which features of a Progressive Web App make sense for your users? What tools can make the process easier (or harder)? In this practical session, Jason will guide you through the key design decisions you’ll need to make about your Progressive Web App and how those decisions impact the scope of your project. He'll also teach you how to avoid common pitfalls and help you take full advantage of Progressive Web App technology.
The document discusses optimizing images for faster page loads and better user experience. It outlines four simple image optimizations: 1) reducing image quality to 85%, 2) using newer formats like WebP and SVG that compress smaller, 3) sizing images appropriately for different screen sizes through responsive images, and 4) lazy loading images below the fold. Implementing these optimizations across 500,000 mobile sites showed median savings of 2.83 seconds faster load time and 419KB less data. The document provides examples and tools to implement each optimization.
This document discusses various topics related to developing web apps, including HTML5, responsive design, touch events, offline capabilities, and debugging tools. It provides links to resources on HTML5 features like media queries, SVG, web workers, and the page visibility API. It also covers techniques for adapting content like responsive web design, progressive enhancement, and server-side adaptation. Mobile browser stats and popular devices on Douban are mentioned. Frameworks like Bootstrap and tools like Weinre for debugging mobile apps are referenced.
Mobile Web Performance - Getting and Staying FastAndy Davies
Slides from mine and Aaaron Peter's talk at QCon London (Mar 2014) on how to measure mobile web performance, things that affect in and how to improve it
HTTP/2 is a new version of the HTTP network protocol that aims to improve website performance. It uses a single TCP connection to allow multiple requests and responses to be multiplexed together. This improves efficiency over HTTP/1.1. Additionally, HTTP/2 allows servers to push critical resources like CSS files to clients, potentially reducing load times. While HTTP/2 brings performance benefits, challenges remain around widespread server support and differing optimizations between HTTP/1.1 and HTTP/2.
Performance Testing using Real Browsers with JMeter & WebdriverBlazeMeter
Learn how to easily run performance tests with real browsers using Selenium WebDriver.
Ophir Prusak, BlazeMeter’s Chief Evangelist, gives step-by-step instructions on doing this using BlazeMeter and/or JMeter.
Learn how to:
- Correlate actual browser-based user experience with the load tests
- Run multiple Selenium Webdriver tests in parallel at scale by using the power of the cloud
- Do it all without any prior JMeter knowledge or experience!
How Slow Load Times Hurt Your Bottom Line (And 17 Things You Can Do to Fix It)Tammy Everts
This document discusses how slow page load times can hurt a website's bottom line. It notes that a 2% increase in conversions is seen for every 1 second improvement in load times. Examples are given of companies that cut load times in half and increased conversions by 9% and increased downloads by 15.4%. The document outlines two main causes of slow performance: pages being too big in size and pages being too complex. It provides tips on how to address these issues, such as compressing assets, lazy loading images, consolidating resources, and optimizing third-party scripts.
Sadece uygulamalarınızın değil database sorgularınızın da performansını ölçmek için JMeter kullanabilirsiniz.
Güçlü bir teknik test ürünü olan JMeter ile hangi sorgunuzun daha sorunlu olduğunu bulalım.
You can use JMeter not only for measuring your applications performance but also your database queries.
With this powerfull technical test tool, you can discover which database queries takes most of the time.
Speed matters, So why is your site so slow?Andy Davies
Slides from my talk at ReDevelop 2015
Covers business case for web performance, along with the fundamentals of how latency and the critical rendering path affect page load performance
Is the buzz around Progressive Web Apps real or are they simply the latest fad? In this talk, you’ll learn exactly what Progressive Web Apps are, what problems they solve, and what new design challenges they present. Jason will show how organizations are using Progressive Web Apps to provide better and faster user experiences.
Basic Understanding of Progressive Web AppsAnjaliTanpure1
The document provides an overview of progressive web apps (PWAs). It discusses the history and idea behind PWAs, defining them as websites that are built using common web technologies but adopt features that make them feel like native mobile applications. The key pillars that transform websites into PWAs are listed as being reliable, fast, engaging, and integrated. Core building blocks like service workers and web app manifests are explained. Example case studies are given that demonstrate performance improvements from adopting PWAs. Limitations are also outlined.
Go for Progressive Web Apps. Get a Better, Low Cost, Mobile PresenceMagic Software
Progressive web app may look like a buzz word around improved web standards and few mobile friendly web design patterns. But it brings positive impact on businesses and users. Let’s learn more about it here.
IRJET-Garbage Monitoring and Management using Internet of thingsIRJET Journal
This document discusses building a progressive web app for an educational system. It begins by explaining the limitations of native mobile apps and regular web browsing. Progressive web apps aim to provide the rich experience of native apps while avoiding downloads through the use of service workers, responsive design, and app-like interfaces. The document then reviews related work on improving the mobile web experience. It presents the architecture of progressive web apps, including the application shell model and role of service workers. Finally, it proposes a system architecture for a progressive web app for education and concludes that these apps reduce burdens on users compared to native apps or regular web browsing.
Let's focus on the Mobile Web and talk about the keys to a building a great mobile experience.
From AMP (=Accelerated Mobile Pages) as a starting point up to PWA (=Progressive Web Apps). I will cover the steps through some of the key features we see as core to the modern web experience. As a bonus, we will close with new APIs that expending the web even farther.
The main API for PWA creation is Service Workers, they are the heart of this “new web”. With Service workers, we can send push notifications to the user or do background sync and show data even when the user is offline. They are not some science fiction, but a script that is quite easy to use.
In this talk, we will see overview what are service workers and when and how to use them.
Introduction to Progressive Web Apps (PWA) as presented in Divum's New Product Developers Meet. PWA provides highly reliable, fast & engaged mobile like user experience on the web.
Cloud web applications: the new perspective of sproutcoreDavid Saitta
This document summarizes a thesis on AppAware Analytics. It discusses developing a cloud web application using SproutCore to provide analytics on mobile app usage data collected by the AppAware project. Key points include:
1. The application aims to minimize server-side computation and bandwidth usage by handling most processing in the browser.
2. It uses a REST interface to retrieve app and event data from the server in JSON format.
3. Challenges include the large amount of event data and lack of support for caching computed charts on the client-side.
The document evaluates if web applications can compete with desktop applications, concluding it is possible for advanced interactions but performance may suffer with large data transfers.
Progressive web apps take advantage of new technologies to provide reliable, fast, and engaging experiences to users. They offer features such as customization through a web app manifest, instant loading with service workers, push notifications, adding apps to a user's home screen, and more. Service workers in particular allow developers to support offline experiences by giving them control over what offline content is available.
This document discusses progressive web apps (PWAs) and how to make them fast, integrated, reliable, and engaging. It focuses on four key areas: fast performance by optimizing load times and working offline; integrated user experience by making the app feel like a native app; reliable functionality even on poor network connections using service workers; and engaging design with features like push notifications. The document provides examples of how to implement service workers, push notifications, and other technologies to build PWAs that meet these criteria.
There's been a lot of talk lately about Progressive Web Apps. The main purpose is to provide an app-like user experience. For those who haven't heard of them, progressive web apps aim to bridge the gap between the mobile web and native apps by providing things like the ability to install, provide offline support, run background processes and send push notifications.
What are the non-technical doubts about using it? How does it work? Is it worth to dig into PWA now?
“Building Mobile Optimized Websites,” Nick Bourgeois / Ray Villaresrayvillares
The document discusses Acquity Group's process for building a mobile-optimized website for their clients. They determined a web application would be better than a native mobile app. Their process involved stakeholder interviews, focus groups, competitive analysis, and content analysis. They designed templates for common pages like menus, solutions, and case studies. The site was developed using Django, Oracle, HTML, CSS, and JavaScript and could be completed by their UI team in under 40 hours.
The document discusses Acquity Group's process for building a mobile-optimized website for their clients. They determined a web application would be better than a native mobile app. Their process involved stakeholder interviews, focus groups, competitive analysis, and content analysis. They designed templates for common pages like solutions, case studies and newsfeeds. The site was developed using Django, Oracle DB, XHTML, CSS and jQuery in under 40 hours.
Your visitors interact with content, not with your website. Content consistency is crucial to a successful user experience. Re-publishing is one option but it’s an inside-out action that relies on the authority controlling where the information goes. An API frees your data and the responsibility to where it is published and accessed. Mobile is a major consumer for your API but not every API is setup to handle the mass of requests coming from those devices. Learn how to mobile devices consume API’s with limited or low bandwidth and how to to tailor your API to be as efficient and effective as possible.
http://environmentsforhumans.com/2012/doteduguru-summit/
A rapid, low-cost, server-less approach to app development. This presentation was delivered at AnDevCon Boston, to showcase Six Overground's streamlined approach to building, marketing, and refining an app until it reaches product/market fit.
Let's discover the differences between an app and a PWA by comparing native apps with PWAs over going through features and capabilities of Apple Podcast app. This talk is a brief overview of the capabilities project and providing native like app features on Web platform.
what is a web application?
what is web application development?
What are the types of web applications?
What are the best examples of web applications?
Advantages of web applications.
Disadvantages of web applications.
What is the cost of web application development?
The web - What it has, what it lacks and where it must go - keynote at Riga D...Robert Nyman
The document discusses the current state and future of the web. It notes that while native apps have gained popularity, especially on mobile, the web still accounts for a large portion of usage. It outlines tools from Google like service workers, push notifications, and app install banners that aim to close capabilities gaps between the web and native apps. The document advocates for progressive web apps that are accessible like websites but also feel like native apps to users. The future of the web, it argues, depends on continuing to match and surpass native platforms while keeping the web open, accessible, and long-lasting.
The web - What it has, what it lacks and where it must go - Bulgaria Web Summ...Robert Nyman
The document discusses the current state and future of the web. It notes that while native apps have gained popularity, especially on mobile, the web remains strong with over 1 billion active users. It outlines tools from Google like Service Workers that help the web compete with capabilities previously only available to native apps like push notifications, offline access, and background processing. The document advocates for continued progress to simplify the web development process and ensure the longevity of technologies, arguing this will help the web remain diverse and accessible across all platforms.
Similar to Building an Appier Web - London Web Standards - Nov 2016 (20)
AB Testing, Ads and other 3rd party tags - London WebPerf - March 2018Andy Davies
Talk at Smashing Conf - 7th Feb 2018 (Video - https://vimeo.com/254703766)
Explores some of the issues that 3rd-party tags introduce when we add them to our sites, some ways of measuring the impact, and challenges we still have
AB Testing, Ads and other 3rd party tags - SmashingConf London - 2018Andy Davies
Talk at Smashing Conf - 7th Feb 2018 (Video - https://vimeo.com/254703766)
Explores some of the issues that 3rd-party tags introduce when we add them to our sites, some ways of measuring the impact, and challenges we still have
Inspecting iOS App Traffic with JavaScript - JSOxford - Jan 2018Andy Davies
This document discusses inspecting iOS app traffic with JavaScript by injecting scripts using Frida. It demonstrates capturing encrypted network traffic from an iOS app, extracting the TLS master secret and client/server randoms using a Frida script, and sending these values to the host computer to allow decrypting the traffic with Wireshark. The key steps are: using Frida to inject a script into an app, hooking the TLS PRF function to extract secret values, and sending these to the host to decrypt the HTTPS traffic in Wireshark. With these techniques, patterns in encrypted app traffic can be observed.
Slides from my talk at Bristol WebPerf Meetup 2017-07-20 where I talked about some of the approaches I use to persuade people that they should invest in making their sites faster
Speed: The 'Forgotten' Conversion FactorAndy Davies
Speed is a critical factor when it comes to converting browsers into buyers but it's often forgotten and other factors prioritised instead. Using real data from UK retailers this talk explores the relationship between speed and conversion
Building an Appier Web - Velocity Amsterdam 2016Andy Davies
Explores progressive web apps, what advantages they have versus native apps, how to build, and test them, and some of the challenges we still have ahead.
Slides from talk at Velocity Amsterdam 2016
The Case for HTTP/2 - Internetdagarna 2015 - StockholmAndy Davies
HTTP/2 is here but why do we need it, how is it different to HTTP/1.1 and what does the mean for developers?
Slides from my talk at Internetdagarna 2015, Stockholm
The document discusses how mobile sites are getting slower due to larger page sizes from images, CSS, JavaScript and fonts. It provides tips for optimizing images, such as using responsive images and smaller image sizes. It also recommends prioritizing critical content over non-essential elements like unnecessary JavaScript and web fonts to improve page load times.
The Case for HTTP/2 - EpicFEL Sept 2015Andy Davies
HTTP/2 is here but why do we need it, and how is it different to HTTP/1.1?
Video - https://www.youtube.com/watch?v=ob-CnA9YmiI
These are the slides from my talk at Front-End London's one day conference, EpicFEL
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Building an Appier Web - London Web Standards - Nov 2016
1. Building an Appier Web
@AndyDavies NCC Group Nov 2016
https://www.flickr.com/photos/alesimages/4215559895
2. We’re spending more and more time in apps…
© comScore, Inc. Propri
Digital media usage time is exploding right now, and it’s
predominantly being driven by mobile apps.
476,553 480,967 550,522
409,847
621,410
778,95477,081
97,440
118,299
0
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
1,600,000
Jun-2013 Jun-2014 Jun-2015
TotalMinutes(MM)
Desktop Mobile App Mobile Browser Over the past
years, total dig
media usage h
grown 49% wit
mobile apps ha
grown 90% an
contributing to
of the total incr
in time spent.
Mobile browse
also seeing ve
strong growth
53% and even
desktop is still
rising.
Growth in Digital Media Time Spent
Source: comScore Media Metrix Multi-Platform & Mobile Metrix, U.S., Total Audience
+53%
vs. 2013
+90%
vs. 2013
+16%
vs. 2013
3. © comScore, Inc. Prop
29%
15%
11%
6%
6%
4%
3%
3%
23%
Social Networking
Radio
Games
Multimedia
Instant Messengers
Music
Retail
News/Information
All Others
Social Networ
Radio and Ga
contribute mo
than half of to
time spent on
mobile apps.
strength of the
categories
highlights that
mobile device
more heavily
for entertainm
and communi
than their des
counterparts.
Share of Mobile App Time Spent
Source: comScore Media Metrix MP and Mobile Metrix, U.S., Total Audience, June 2015
Social media and entertainment account for the six top app
categories and drive two-thirds of total time spent on apps.But our usage can be very specific
4. What do we like about apps?
https://www.flickr.com/photos/jennicatpink/819741953
18. © comScore, Inc. Pro
And mobile audience growth is being driven more by mobile we
properties, which are actually bigger and growing faster than ap
A comparison
Top 1000 App
the Top 1000
Web Propertie
shows a surp
result. Not on
mobile web
properties ha
audiences tha
more than 2.5
size, but thes
audiences are
growing twice
fast.
Average Monthly Audience: Top 1000 Mobile Apps vs. Top 1000 Mobile Web Properties
Source: comScore Mobile Metrix, U.S., Age 18+
-
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
Jun-2014 Sep-2014 Dec-2014 Mar-2015 Jun-2015
UniqueVisitors(000)
Apps Mobile Web +42%
y/y
+21%
y/y
The web has great reach…
29. So what might we need to build it?
https://www.flickr.com/photos/aigle_dore/7912377858
30. We can already add pages to our home screen
Supported by most major mobile
operating systems and browsers



(Bookmarks page rather than site)
31. Can specify the icon etc. via meta tags
<link rel="apple-touch-icon" href="icons/logo/ncc-logo-120x120-ios.png">
<link rel="apple-touch-icon-precomposed" href="icons/logo/ncc-logo-120x120-ios.png">
<link rel="apple-touch-startup-image" href="/images/startup.png">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
(Minimal iOS set, ideally need more icon and splash screen sizes
and other mobile browsers prefer different meta data)
37. And can even offer an install prompt
(Browsers use several heuristics before deciding to prompt)
38. Can listen for install event and track in analytics
window.addEventListener('beforeinstallprompt', function(e) {
e.userChoice.then(function(choiceResult) {
console.log(choiceResult.outcome);
if (choiceResult.outcome == 'dismissed') {
// Track not installed
} else {
// Track installation
}
});
});
(Chrome supports this but it’s not in AppManifest standard)
39. Can listen for install event and track in analytics
window.addEventListener('appinstalled', function(e) {
// Track installation
});
(AppManifest standard proposes this)
40. But how do we cope with a poor (or no) network?
https://www.flickr.com/photos/odaeus/3942500793
44. Service Worker is an in-browser network proxy
that can intercept requests and responses
45. <script>
if ('serviceWorker' in navigator) {
navigator.serviceWorker.register('serviceworker.js', {
scope: '/'
}).then(function(registration) {
// Anything else you want to do with registration
// e.g. subscribe to push messages
}).catch(function(err) {
console.log('Can't register service worker: ', err);
});
}
</script>
Register a Service Worker
46. Option to install via Link may be coming
<link rel="serviceworker" scope="/" href=“/serviceworker.js">
or
Link </serviceworker.js>; rel=serviceworker scope=/
(Origin trial in Chrome, under consideration in Firefox)
51. Going offline - retrieving from cache on fetch
self.addEventListener('fetch', function(event) {
event.respondWith(
caches.match(event.request).then(function(response) {
return response || fetch(event.request);
})
);
});
Try the cache first and go to the
network if there’s no match
53. Caching as a fallback for network
• Make a request
• Succeeds - cache response and return it
• Fails - check cache and return cached response
• Network request fails and not in cache ¯_( )_/¯
(OK so you probably want to manage the users experience in the last case)
54. Caching patterns depend on use case, some very helpful resources
Mozilla https://serviceworke.rs/
Jake Archibald https://jakearchibald.com/2014/offline-cookbook/
ServiceWork Toolbox https://github.com/GoogleChrome/sw-toolbox
62. Powerful APIs (inc Service Worker) require HTTPS
https://www.flickr.com/photos/zebble/6080622
63. “The future is here, it’s just unevenly distributed”
✓ ✓ ✓ WiP ?✓
64. We’re getting better access to native features
• Camera
• Notifications
• Location
• Geofencing
• Alarms
• Vibration
• Sharing
• Battery
• and more…
(On some platforms)
72. You can deploy them today
• 3x more time spent on site
• 40% higher re-engagement rate
• 70% greater conversion rate for
those arriving via Homescreen
• 3x lower data usage
75. These apps aren’t packaged and deployed through stores,
they’re just websites that took all the right vitamins
https://infrequently.org/2015/06/progressive-apps-escaping-tabs-without-losing-our-soul/
Alex Russell, Google
76. I still have questions…
• What might not be suitable as a progressive web app?
• Can we build PWAs that are as fast and frictionless as native?
• How can we sell our apps, will we need app stores?
• How do we avoid an uncanny UI valley?
• What happens to storage when every site is a PWA?
77. “Every step on the path to a PWA makes sense on it’s own”
Jason Grigsby