Velocity 2012 - Taming the Mobile Beast

Responsive Web Design (RWD) is a giant leap in the right direction for web on mobile devices. However, RWD is just a small, part of the big picture. What we really want is for the whole value chain to be responsive, not only in the browser., There are a vast number of frameworks and tools on the webs for implementing RWD. Most of these provide a great starting point for mobile ventures. However, there are not so many tools out the to help you with the rest of the value chain. Especially tools that are easy to use and provide a relatively small footprint for front end developers., This talk will explore possibilities you get when you combine the best practices from the client side, with best practices from the server side. Sometimes this technique is called RESS, or Adaptive Design. The talk will contain coding, code samples and best practices based on popular frameworks and tools for Adaptive Design that combines client side and server side techniques. Results, effects and gains in terms of performance will also be documented and exemplified., The audience will gain insights into how their next project can perform even better in mobile devices and smart ways to reduce data traffic, increase speed and be more future friendly by utilizing the server for heavy-lifting.

Talk delivered in New York, Sep 19, 2016 during an O'Reilly meetup before Velocity Conference about Web Performance and Images, including HTTP Client Hints and new Image Formats

Performance is important for user experience. While some myths exist around performance, such as XML being much slower than JSON, tests show they are essentially identical. Easy techniques can improve performance, such as using content delivery networks and image compression. Emerging standards like HTTP 2.0, server-side push, and WebSockets allow pushing data to clients. Frameworks like MessagePack provide smaller binary serialization. Proper use of threading, reusing elements, preloading, and prioritizing content can also boost performance. The perception of speed matters - even 100ms delays impact user behavior.

You might think that with web applications in the cloud, that load testing from the cloud provides all the testing you need. You might think that testing from the cloud can tell you if your website can handle peak traffic loads, driven by marketing campaigns, or seasonal events. Unfortunately you may be wrong. In the Web 2.0 world; applications are combined on the fly inside the browser, from third-party and shared services both in the cloud and from behind the firewall. Imad Mouline, CTO of Gomez will tell you — the cloud is not the answer. Join Imad Mouline, on Wednesday September 8th for this provocative session around today’s highly complex, distributed Web applications and how to test them. Imad is a veteran of software architecture, research & development and an expert in Web application development, testing and performance management. In this session, Mouline will discuss: * The evolution architecture and structure of Web applications * The current state of load testing approaches and how they apply to a variety of architectures * How existing and emerging testing techniques are applied to different types of applications * The future architecture of Web applications and what it means to the future of testing

This document provides information about getting internet access, different internet connection speeds, and factors that affect broadband speed. It includes the following key points: 1. To check available internet providers and speeds, visit www.connectingdevonandsomerset.co.uk. Contact your provider or shop around for the best option. 2. Broadband speeds range from less than 1Mbps for slow connections up to over 100Mbps for very fast connections. Faster speeds provide quicker loading, downloading, and streaming capabilities. 3. Actual speeds can be lower than advertised and depend on factors like distance from an exchange, wiring quality, number of devices using the connection, and wireless vs. wired connections.

An introduction to Web Performance Optimization in 2016 - Talk delivered in Toronto, Canada, October 18th, 2016

The document provides an agenda and summary for a talk on how the physical world is meeting the web through various technologies. The topics discussed include mobile and IoT, the Physical Web, Progressive Web Apps, and connecting through web APIs. Specific emerging APIs that allow access to device sensors and hardware are demonstrated, such as ambient light detection, web Bluetooth, and web audio. The talk aims to show how the web is becoming a universal platform to enable new experiences at the intersection of the digital and physical worlds.

The document provides an overview of optimisations that can be made to apps to improve performance and speed. It discusses how fast is perceived by humans, benchmarking current performance, optimising images through resizing, formatting and lazy loading, reducing payload sizes through caching and content delivery, and replacing animated GIFs with optimized video formats. The document contains tips and examples for profiling apps and making optimizations to deliver content quickly.

The document provides tips for optimizing app performance and speed. It discusses how fast is perceived by humans, benchmarking current performance, optimizing images through resizing, format changes, quality adjustments, caching and lazy loading. Other tips include minimizing JSON response sizes through encoding, improving startup speed, and handling animated GIFs and videos efficiently. Testing tools are recommended to continuously monitor performance. The overall message is that applications can provide beautiful user experiences while also being fast.

This document discusses optimizing content delivery for mobile performance. It begins by introducing common tools for testing mobile performance like Video Optimizer and WebPageTest. It then discusses best practices for optimizing delivery speed such as using content delivery networks (CDNs) and image compression. Other topics covered include optimizing images, responsive delivery, animations, and video streaming. The overall message is that optimizing these areas can significantly improve mobile performance and user experience.

This document summarizes a presentation about extreme performance for mobile web. It discusses understanding the mobile web ecosystem today, focusing on performance differences for mobile and tools to measure performance. It also covers HTML5 APIs and specifications for performance as well as tips for extreme performance including optimizing the network layer, reducing redirects and stop signs, prioritizing responsive design, minimizing above-the-fold content, loading CSS asynchronously, treating JavaScript as optional, and ensuring fast user interfaces. The overall message is that perception of performance is more important than actual load times and focuses on techniques to optimize for mobile.

This document discusses optimizing web performance for mobile devices. It covers the current mobile web ecosystem, importance of performance, tools for measuring performance, optimizing initial loading and perception, and responsiveness. The key points discussed are understanding the diversity of mobile browsers and platforms, keeping content above the fold loading within 1 second, using tools like navigation timing API to measure performance, avoiding redirects and unnecessary resources, and ensuring smooth scrolling and responsiveness.

xPerformance is fundamentally, a UX concern. Sites that are slow to render or janky to interact with are a bad user experience. We strive to write performant code for our users, but users don’t directly interact with our code - it all happens through the medium of the browser. The browser is the middleman between us and our users; therefore to make our users happy, we first have to make the browser happy. But how exactly do we do that? In this talk, we’ll learn how browsers work under the hood: how they request, construct, and render a website. At each step along the way, we’ll cover what we can do as developers to make the browser’s job easier, and why those best practices work. You’ll leave with a solid understanding of how to write code that works *with* the browser, not against it, and ultimately improves your users’ experience.

The document provides guidance on technology essentials and estimated costs for non-profits. It recommends budgeting $4,420 which includes $1,000 for a computer, $80 for software, $500 for a printer, $400 for backup drives, $500 for internet access, $130 for a wireless router and firewall, $10 for email and website, $100 for a fax machine, $200 for training, and $1,500 for a smartphone. The document provides purchasing recommendations and cost comparisons for each technology item.

This document summarizes key points about optimizing performance for mobile web: 1. Mobile platforms are dominated by iOS and Android, with different browsers on each (Safari, Chrome). Understanding the ecosystem is important for testing and optimization. 2. Perception of speed is critical - aim for responses within 1 second. Mobile hardware is less powerful so optimization is needed. Tools like emulators, remote inspectors, and APIs help measure performance. 3. For initial loading, focus on getting above-the-fold content within 1 second using techniques like avoiding redirects, gzipping files, separating critical CSS, and deferring non-essential assets.

This document contains slides from a presentation given by Jim Jagielski at APACHECON North America on September 9-12, 2019. The presentation provides an overview and review of key features of Apache HTTP Server version 2.4, including improvements to configuration, new modules, enhancements for cloud/proxy usage, and performance increases. It highlights capabilities like mod_macro for virtual hosts, expression-based configuration with <IfDefine>, and health checking of backend servers. The presentation aims to dispel myths about Apache being outdated and argues it remains highly relevant due to its flexibility and performance.

A deck on how to improve performance of mobile apps and websites. Presented at DGD DevFest, Glasgow, March 17, 2018

Методики UX исследований, кейсы Mail.Ru Group

The document provides an overview and analysis of the digital marketing company HUGE Inc. It includes an agenda, history of digital marketing, current projections in the industry, an overview of HUGE's strengths and weaknesses, current issues, alternatives for addressing issues, recommendations including strategic expansion into global markets like Denmark and the UK, strategic positioning, and a financial analysis concluding that HUGE has the potential to successfully expand globally while sustaining its values.

This slide deck provides an in-depth look at the digital services company HUGE and a consulting analysis of recommended strategic actions for the company's future.

Huge is a full-service digital agency founded in 1999 that employs 550 people across multiple global offices. They help brands transform and grow their businesses through a focus on user experience design. Huge takes a three-step approach to designing user experiences: 1) listening to users through ethnographic research to understand their needs and behaviors, 2) prioritizing features to focus on the most important goals and tasks, and 3) testing designs iteratively with users to identify issues and drive continuous improvement.

This document provides dos and don'ts for designing mobile forms. It recommends labeling fields clearly, dividing long forms into chunks, using the right control types sized appropriately for mobile, connecting errors to the problematic field, accounting for the keyboard, indicating progress in wizards, and avoiding useless popups, duplicate navigation, wrong controls, and designs that don't consider limitations of mobile use. Guidelines include using inline labels, combining related fields, dividing forms into sections, right-sizing buttons and selecting appropriate date pickers, connecting errors to fields, remembering the keyboard, marking wizard progress circles carefully, indicating drag affordance, always showing loading progress, and avoiding popups, duplicates, wrong controls and designs ignoring finger limitations.

Information architecture and content strategy are the foundation of any website but, when it comes to mobile, they can literally mean the life or death of a product. The truth is that even the best-designed and well-engineered mobile products can still fail if their IA is not sound, and that’s because mobile information architecture doesn’t only define the structure of content, but also determines how users will interact with it. And speaking of content, do you know what content should go on your mobile sites and apps? Are your users finding what they came for?In this talk we will take a look at the thought process that drives mobile content strategy, the specific challenges and opportunities of the mobile space and how information architecture and content strategy contribute to the creation of outstanding cross-channel experiences. 75 Tutorial presented at UX Scotland 2014

Présentation de la soirée du 6 juin 2012 de lafrenchmobile.com

This document discusses various techniques for responsive images in web design, including browser sniffing versus feature testing, image sizes for different screen resolutions and bandwidths, and different implementation methods like .htaccess files, the <picture> element, and JavaScript libraries. It covers topics like using the browser width to determine layouts, screen resolution detection, and bandwidth testing. Workarounds discussed include using background images, SVGs, icon fonts, and compressed JPEGs. The document advocates a mobile-first approach and using CSS media queries to adapt designs based on screen size.

The document discusses the Metro design language created by Microsoft for Windows Phone 7. It focuses on typography over graphics and is inspired by public transport signage. Key principles of Metro include being light, clean, open, and fast while focusing on content. The author gathered visual references of Metro and similar designs from websites, apps, Windows 8, dashboards, mobility uses, and miscellaneous examples to help generate new interface ideas.

This document provides summaries of and links to various educational Android apps. It discusses apps for astronomy (Sky Map), nature identification (iNaturalist), maps and GPS (GPS Essentials), augmented reality (QR Droid), video editing (VidTrim, WeVideo for Android), photography (Camera Illusion, PicSay, Skitch for Android), audio recording (Sound Cloud, WAVE Recorder), note taking (Color Note, Evernote, Box for Android), writing (Write for Android), browsing (Dolphin HD, Feedly, Google Currents), ebooks (Google Books Play, Mantano Reader, iStoryBooks), math (Peter Pig’s Money Counter), collaboration (Infinite Kind - Sync

Présentation lors du Web2Connet 17/18/19 Octobre 2014 - Paris

Retrouvez mon analyse de ce baromètre sur mon blog : http://marketing-webmobile.fr

Les résultats de la 2ème édition de l’étude MMA - Mobile Marketing Attitude consacrent «le véritable avènement de la tablette». 39% des possesseurs de smartphone et de tablette emportent cette dernière partout, et 42% ont remplacé leur ordinateur par leur tablette. 24% interagissent avec des programmes TV via leur tablette. 46% préfèrent leur tablette à leur smartphone pour consulter des offres et préparer un achat. L’étude montre également un «fort développement des usages du smartphone» : 31% des utilisateurs commandent en ligne via leur mobile et 36% effectuent des virements. 52% acceptent des notifications push, 59% acceptent de recevoir des messages sur leur smartphone selon leur position géographique. 68% veulent bien recevoir des messages commerciaux s’ils sont clients de la marque et 25% en tant que prospect. 40% consultent, comparent des produits ou services, via leur mobile. 31% des smartphoners suivent l’actualité de leurs marques préférées et 11% la partagent. 8% utilisent souvent les QR codes ou tags 2D, 46% le font occasionnellement. Les attentes sont également de plus en plus marquées et une bonne partie des utilisateurs aimeraient remplacer leur portefeuille par leur smartphone. 28% souhaiteraient payer en caisse avec leur smartphone. 24% aimeraient payer directement avec leur mobile sans passer en caisse. 52% aimeraient embarquer des cartes de fidélité sur leur smartphone et 45% des coupons de réduction, 35% leurs billets de transport et 28% leurs billets de spectacle. 38% aimeraient s’identifier à l’entrée d’un magasin pour recevoir des informations personnalisées sur leur smartphone. Selon le SNCD, ces résultats «confirment l’omniprésence du smartphone et la forte montée en maturité de la tablette dans la relation commerciale entre les marques et les consommateurs». L’échantillon interrogé comprend 1 118 répondants âgés de 18 à 65 ans, possesseurs de smartphone ou de tablette, se connectant à Internet via leur appareil. L’enquête a été réalisée en ligne du 18 juillet au 30 août 2013.

Mobile and Tablet Content Distribution September 6th – 10:30am There is no doubt that mobile devices such as smartphones and tablets are changing the way that people consume information. The speed at which people are purchasing those items and making them part of their daily routines is happening faster than most marketers are prepared for! In this presentation, John Foley, CEO of interlinkONE and Grow Socially, will provide an overview of what needs to be done to prepare, deliver, and measure content that is tailored for the mobile audience. John will cover items such as: How to develop a strategy to reach your mobile audience Options for building mobile websites, landing pages, blogs, and more Best practices for integrating mobile with other distribution channels, such as print and email Considerations regarding building a mobile App vs. a mobile website And more! We hope that you will join us as you look for ways to reach the growing mobile audience!

A case study showing how we replaced wirefaming with a framework led prototype to better deliver a responsive web design. by Ben Scammels, Designer at http://www.makemedia.com

Founder and CEO, Magaly Chocano, of Sweb Development creators of SwebApps, shares the importance for nonprofits to have a mobile presence in three key areas, web, mobile, and social. Having a strategy can provide a great platform for nonprofits to extend their reach by finding new ways to engage not only their existing supporters, but also reach new supporters.

Part of the Mobile Communications Resource Center, this is one of several presentations created by Sara Quinn for The Knight Center and shared with Ball State University's College of Communication, Information and Media. All rights are reserved.

Like our brains, most of us only use a small percentage of the MAGIC available on the iPads. This session takes you from General Settings to Must Have Apps! Gina Schreck, president of SynapseConnecting, share loads of fun tech tips on their website/ blog at http://SynapseConnecting.com Contact Gina on Twitter @GinaSchreck or old fashioned email Gina(at) SynapseConnecting.com

cette key note a été faite en introduction de la 1ère journée de la Mobile Marketing Association organisée à Paris sur le thème complémentarité TV et Mobile - Tablettes

The document discusses the challenges and opportunities of mobile sites for higher education institutions. It covers the growing mobile opportunity as smartphone usage increases. It addresses the content challenge of optimizing information for smaller screens. It also covers the design opportunity of adapting best practices for mobile. Coding mobile sites well poses a technical challenge but opportunities for optimization. Tracking mobile metrics allows measuring use and adjusting mobile strategies.

This document discusses how high-speed dial-up internet connections work. It explains that high-speed dial-up uses acceleration servers to simplify and speed up the connection process, compressing files during transmission to increase speed, and filtering advertisements and caching web pages to improve browsing performance. In this way, high-speed dial-up aims to improve on traditional slow dial-up and provide a faster connection option without requiring broadband.

Mobile Performance Testing consists of three parts: Part 1 - Client Application performance Part 2 - Server performance Part 3 - Network performance The slide deck we cover how to performance test the network as it applies to a mobile device. Learn: ■ Causes of network related problems ■ What tools and services are available ■ CDNs and other strategies to mitigate network cause problems

This paper is the answer to the assessment questions of the Current Trends In Networking module of BSc. Computing (Information Management) of Anglia Ruskin University

The document summarizes Cotendo's Mobile Acceleration Suite, which is a cloud platform that speeds up mobile content delivery. It has over 450 customers and 100+ employees globally. The suite reduces latency, which is the #1 mobile performance killer. It brings content closer to users through a cloud service with 30 global POPs. This dramatically reduces page load times, as shown through examples of CBS Mobile, IMAX Mobile, and NPR Mobile which all saw load time improvements of 15-50% through the suite. It also offers adaptive image compression that can reduce image sizes by over 75% while maintaining quality.

Doug Sillars' from AT&T talks about App Optimization and what AT&T is doing with ARO to make apps faster at AnDevCon Boston

5G is the latest mobile network technology that can deliver high data speeds of up to 20Gbps and average rates of 100Mbps. It uses high frequency signals that allow for increased bandwidth but require more cell towers in close proximity. While 5G provides benefits like enabling new industries and faster connectivity, there are also health concerns about the electromagnetic radiation it emits. Some research suggests radiation from 5G cell towers may cause cancer or negatively impact wildlife. Overall, 5G remains a debated technology as countries work to deploy it despite questions around safety, need and efficiency.

3G refers to third generation cellular network technology that enabled high-speed data access on mobile devices, making smartphones feasible. It increased mobile internet speeds and allowed for rich multimedia services. 4G is the fourth generation standard that delivers even faster speeds, allowing mobile internet use as pleasurable as on a home computer. Both 3G and 4G provide advantages like mobility, flexibility and reliability, but also have disadvantages such as high battery drain, invasion of privacy, and expensive infrastructure requirements.

This document discusses how high-speed dial-up internet connections work. It explains that high-speed dial-up providers like NetZero and EarthLink aim to make dial-up connections up to 5 times faster than traditional dial-up. This is achieved through the use of acceleration servers that simplify the connection process, file compression to reduce data sizes during transfer, filtering of unnecessary content like pop-up ads to reduce slowdowns, and caching of frequently accessed content to avoid repeated downloading. These techniques help improve the speed and usability of dial-up connections for users not yet ready to switch to broadband internet.

5G cellular technology will provide significantly faster data transfer speeds, lower latency, and an ability to connect many more devices simultaneously compared to previous generations. It works by subdividing cells into micro and pico cells connected to a network backbone to increase efficiency. Potential applications include virtual and augmented reality, autonomous vehicles, remote medical care, and more. Key enabling technologies are device-to-device communication, machine-to-machine communication, and massive MIMO antenna arrays.

This document discusses optimizing mobile networks and applications for speed. It begins with an overview of networking basics and how mobile networks work. It then discusses factors that affect speed like latency, bandwidth, TCP protocols, and cellular network routing. The document provides recommendations for optimizing like leveraging WiFi, anticipating latency, saving bandwidth and battery. It also covers HTTP optimizations, browser APIs and protocols like XHR, SSE and WebSockets. The goal is to understand how networks impact applications and how to design for optimal mobile performance.

The document discusses various ways mobile app developers can lower the power consumption of their apps without affecting performance. It begins by explaining that most apps do not efficiently use system resources like the processor, cellular radio, and display, wasting power and reducing battery life. It then provides tips for optimizing specific areas of power consumption, such as using the cellular radio efficiently by bundling network traffic, offloading tasks to hardware accelerators like the DSP to reduce CPU usage, and managing the display to minimize brightness. The document stresses that measuring power consumption is key, and provides tools developers can use to profile and optimize the power impact of their apps.

The document discusses common network problems such as high bandwidth usage slowing download speeds, high CPU usage degrading network performance, and physical connectivity issues with defective cables. It provides examples of specific causes for each type of problem like video streaming consuming bandwidth, large applications increasing CPU usage, and damaged fiber optic cables reducing data transfer speeds. The document also covers other frequent network issues involving malfunctioning devices, DNS errors preventing access to websites, and wireless interference weakening WiFi signals.

This report provides an overview of e-commerce and information security. It discusses key elements of a B2C online transaction including payment systems and fulfillment. It also covers issues companies face with international commerce such as intellectual property, tax implications, and complying with local regulations. Finally, it provides steps to build a basic website, including registering a domain name, hosting the site, designing pages, optimizing for search engines, testing before going live, and promoting the site.

5G is the latest mobile network technology that can deliver data speeds up to 20 times faster than 4G. It works using higher radio frequencies called millimeter waves that allow it to carry more information faster. 5G will be used for enhanced mobile broadband, mission critical communications, massive IoT, and services requiring low latency. While 5G provides benefits like faster speeds and rural connectivity, there are also concerns about the health impacts of the electromagnetic frequencies and the costs of deploying 5G infrastructure. South Korea, China and the US have begun rolling out 5G networks, while many other countries are in trial stages. 5G and 4G will coexist with 5G-capable phones using both networks.

The document discusses the evolution of wireless technologies from 1G to 5G. It provides an overview of the key concepts and architecture of 5G including its hardware, software, features, advantages, and applications. 5G is expected to offer speeds up to 1 Gbps, be more reliable and available globally at a lower cost than previous generations. It will enable new technologies like wearable devices with artificial intelligence capabilities and provide high quality connectivity for applications like media and telecommunications.

The document discusses using public WiFi networks to offload congested mobile networks through a software-only approach. It proposes building a public WiFi network simply by installing an app on laptops and other devices. This could offload a significant amount of mobile data traffic and save billions by avoiding costly network upgrades. Key questions addressed include user incentives, security, and user experience.

Presentation from 17/3/2011 at the NY Web Performance Chapter about the iPhone/Android Comparison Study by Blaze.io (http://www.blaze.io), presented by Guy Podjarny

5G technology is the next generation of mobile internet connectivity, providing data rates around 100 times faster than 4G. It has the potential to transform many industries with applications like autonomous vehicles, smart cities, augmented and virtual reality. While 5G promises major advantages with high speeds and capacity, it also faces challenges in fully implementing the new infrastructure and addressing security and privacy concerns.

5G technology is the next generation of mobile internet connectivity, providing data rates around 100 times faster than 4G. It has the potential to transform many industries with applications like autonomous vehicles, smart cities, augmented and virtual reality. While 5G promises major advantages with high speeds and capacity, it also faces challenges in fully implementing the new infrastructure and addressing security and privacy concerns. Overall, 5G is established as the future of wireless communication.

The document discusses how a web browser could potentially serve as an IoT gateway and use Bluetooth for authentication. It describes how the Web Bluetooth API allows browsers to connect to Bluetooth Low Energy peripherals. While mobile apps currently communicate with BLE devices, a progressive web application in a browser could do the same. Browsers support protocols needed to communicate with IoT clouds and edge devices via BLE, and have capabilities for processing, storing, and analyzing sensor data. With features like Web Storage APIs and service workers, browsers could perform many of the functions of traditional IoT gateways. The document also explores how a BLE device could authenticate users to web applications by generating JSON web tokens for authentication via a "Login with Bluetooth" option

This document discusses resource prioritization strategies to optimize loading performance. It explains that the browser processes resources sequentially and blocks on certain resource types. It then provides recommendations for developers to inform the browser of dependencies and priorities through techniques like preloading. The document also analyzes HTTP/1.x versus HTTP/2 prioritization and compares performance of loading scripts and fonts with different approaches. It evaluates tools for testing prioritization and discusses why prioritization can fail or appear broken. Finally, it offers suggestions for servers and networks to better support prioritization.

This document discusses HTTP/2 prioritization and how resources are prioritized during loading. It begins by explaining how browsers prioritize different resource types during parsing and rendering. It then covers how HTTP/2 allows all requests to be sent immediately to the server with priority specifications, as opposed to HTTP/1.x which limits connections. The document concludes by discussing challenges with prioritization across connections and various tools for testing prioritization.

This document discusses how to get the most out of the webpagetest.org tool for testing website performance. It provides an overview of the metrics webpagetest measures like load times, bandwidth usage, and script execution. The document also shares links to examples of using scripting commands to test service workers and customizing domain names. Additionally, it promotes Patrick Meenan's GitHub projects for Cloudflare Workers that can optimize sites and mentions the bulk testing feature on webpagetest.org.

Slides from Velocity 2019 tutorial on HTTP/2. Covers prioritization in the browser, network and server and tuning of HTTP/2.

The document discusses key aspects of resource loading and prioritization on the web, including: 1. The HTML parser stops for non-async scripts until previous CSS is downloaded and the script is parsed and executed, but does not pause for CSS or image loading. 2. Resources can only be loaded once discovered by the parser or layout; optimal ordering prioritizes render-blocking and parser-blocking resources first using full bandwidth. 3. HTTP/2 allows for prioritization of resources from a single domain, while priority hints and preloading help prioritize cross-domain assets.

This document discusses various metrics for measuring website speed and performance. It outlines different technical, visual, and interactive metrics and explains considerations for synthetic versus real-user measurement. Key recommendations include using First Contentful Paint, Speed Index from synthetic tests and First Interactive for real-user measurement to track progress towards performance goals. Effective connection type distribution from real-user data should also be considered to ensure optimizations work for all users.

The document discusses strategies for improving front-end performance, especially for users on slow connections or mobile devices. It recommends dynamically adjusting content like images, scripts, and ads based on connection speed. Both client-side techniques using JavaScript and service workers as well as server-side methods like analyzing request headers and response times can help optimize the experience. Browsers are also intervening more aggressively to prioritize resources and content loading. The goal is to make websites faster and more usable for all users regardless of their network conditions.

Presentation from Velocity 2016 on using Machine Learning to determine the metrics that drive bounce and conversions

This document summarizes a presentation on debugging front-end performance related to TLS and HTTPS. It discusses optimizing the TLS handshake to reduce round trips, using session resumption, OCSP stapling, TLS false start, and dynamic record sizing. It also covers TLS debugging tools like istlsfastyet.com and security headers like HSTS, CSP, and HPKP. The presentation aimed to provide practical techniques and checks to improve TLS performance in practice.

This document summarizes a presentation on debugging front-end performance using service workers. Service workers allow intercepting and responding to network requests and caching assets. They also support features like push notifications, offline access, and progressive web apps. The presentation covered how service workers work, common use cases like handling errors, CDN failover and prefetching, as well as future possibilities like drawing images locally and custom compression.

This document summarizes a presentation on debugging front-end performance issues. It discusses identifying single points of failure from third-party scripts and social widgets that can block loading. It recommends monitoring for failures, loading scripts asynchronously, and using a "black hole" to simulate outages for testing. Detection and mitigation of blocking third-party code is important to ensure fast page loads.

This document discusses various methods for measuring front-end performance, including synthetic testing, active testing, real user measurement, and measuring the visual experience. Synthetic testing provides consistent results but may not reflect actual user performance, while real user measurement captures real user experiences but with limited detail. The document also covers specific tools like Navigation Timing, Resource Timing, User Timing, SpeedIndex, and services from companies like Soasta, New Relic, and WebPageTest that can help with performance measurement.

This document provides an overview of service workers and how they can be used. It begins with registering a service worker script and discussing the install and activate lifecycle events. It then covers using service workers to handle fetch events to provide offline functionality by precaching resources and serving cached responses when offline. Finally, it discusses several other potential uses of service workers like custom error pages, CDN failover, prefetching, and metrics collection.

Presentation from Velocity NYC 2014 on setting up private WebPagetest instances Video: https://www.youtube.com/playlist?list=PLWa0Ky8nXQTaFXpT_YNvLElTEpHUyaZi4

Slides for my tutorial from Velocity 2014 on some of the more advanced features in WebPagetest. Video is available on Youtube: Part 1: http://youtu.be/6UeRMMI_IzI Part 2: http://youtu.be/euVYHee1f1M