sia karamalegos

Images account for 50% of the bytes downloaded to load a website. How can you make sure that your users only download the smallest image necessary while preserving image quality? In this talk, we'll focus on the underlying concepts in HTML and CSS for serving responsive images, which you can take with you no matter which tool you use.Which file formats suit which image types best? How can you use art direction in images to show the best image for a viewport layout? Come learn about this and more!

Web performance matters. From SEO to bottom-line revenue impacts, performance can make or break your app. However, fixing performance feels like a quagmire of expert-level topics. What if I told you JavaScript bundle sizes could be cut up to 50% by doing one thing only? Nearly 90% of web traffic runs on modern browsers, but we're transpiling all of our JavaScript to ES5. That’s expensive. In this talk, we'll learn about differential serving, or serving both modern bundles and legacy bundles using webpack. This talk is framework agnostic, and best if you have at least a basic understanding of JavaScript.

Help! My app bundle is 5MB! My users are angry that my app is so slow! It’s easy to forget that performance matters when we are under pressure to deliver features quickly. What data should we use to inform our decisions? From code splitting, lazy loading, and tree shaking to bundle analysis, progressive rendering, and modern transpiling, come learn how you can deliver a better experience to your users with high-performing front-end apps. This talk is library-agnostic (React, Angular, Vue, etc.).

Are you losing revenue to performance? 53% of mobile site visits are abandoned if a page takes longer than 3 seconds to load. Performance is important. Tooling can be hard. Do flame charts intimidate you? Come learn how to audit and fix common performance issues using Chrome DevTools, Lighthouse, PageSpeed Insights, and webpagetest.org. In this hands-on workshop, we’ll learn about the most common performance pitfalls and fix latency, image, and JavaScript issues in a sample web application. You must understand HTML, CSS, JavaScript, and running npm scripts to get the most out of this workshop. Understanding webpack is helpful but not required.

Performance is important. Tooling can be hard. Do flame charts and waterfalls intimidate you? Come learn how to use common performance tools such as Chrome DevTools, Lighthouse, and webpagetest.org. We'll profile several websites with different performance issues to illustrate how to use each tool. In this talk, I'll live-profile several sites to help you see how to approach performance analysis. It's best if you already know how to use the Chrome Dev Tools inspector, but we will approach the performance tools from a beginner's starting point. Attendees should be comfortable with HTML at a minimum.

Help! My app bundle is 5MB! My users are angry that my app is so slow! It’s easy to forget that performance matters when we are under pressure to deliver features quickly. What data should we use to inform our decisions? From code splitting, lazy loading, and tree shaking to bundle analysis, progressive rendering, and modern transpiling, come learn how you can deliver a better experience to your users with high-performing front-end apps. This talk is library-agnostic (React, Angular, Vue, etc.).

Web performance matters. From SEO to bottom-line revenue impacts, performance can make or break your app. However, fixing performance feels like a quagmire of expert-level topics. What if I told you JavaScript bundle sizes could be cut up to 50% by doing one thing only? Nearly 90% of web traffic runs on modern browsers, but we're transpiling all of our JavaScript to ES5. That’s expensive. In this talk, we'll learn about differential serving, or serving both modern bundles and legacy bundles using webpack. This talk is framework agnostic, and best if you have at least a basic understanding of JavaScript.

Are you losing revenue to performance? 53% of mobile site visits are abandoned if a page takes longer than 3 seconds to load. Performance is important. Tooling can be hard. Do flame charts intimidate you? Come learn how to audit and fix common performance issues using Chrome DevTools, Lighthouse, PageSpeed Insights, and webpagetest.org. In this hands-on workshop, we’ll learn about the most common performance pitfalls and fix latency, image, and JavaScript issues in a sample web application. You must understand HTML, CSS, JavaScript, and running npm scripts to get the most out of this workshop. Understanding webpack is helpful but not required.

In this first part of a 2-part series on web accessibility, we'll answer the questions: What does “accessibility” mean when it comes to the web? Why does it matter? What tools and resources should I use to make an accessible website or application? We'll also dive into hands-on exercises for fixing common accessibility issues such as semantic HTML, color contrast, keyboard access, and optimizing for screen readers. The exercises will continue in part 2 of this series. The workshop parts 1 and 2 are meant to be taken together.Part 1 introduces us to accessibility and begins the hands- on exercises.Part 2 continues the exercises to cover the most common topics and issues in making websites accessible.Please come with a charged laptop.You must understand HTML, CSS, and JavaScript to get the most out of this workshop.

This is the continuation of the Web Accessibility Workshop 101, in which we learned the answers to the questions: What does “accessibility” mean when it comes to the web? Why does it matter? What tools and resources should I use to make an accessible website or application? In this part, we'll continue with hands-on exercises for fixing common accessibility issues such as semantic HTML, color contrast, keyboard access, and optimizing for screen readers. The workshop parts 1 and 2 are meant to be taken together.Part 1 introduces us to accessibility and begins the hands- on exercises.Part 2 continues the exercises to cover the most common topics and issues in making websites accessible.Please come with a charged laptop.You must understand HTML, CSS, and JavaScript to get the most out of this workshop.

Performance is important. Tooling can be hard. Do flame charts and waterfalls intimidate you? Come learn how to use common performance tools such as Chrome DevTools, Lighthouse, and webpagetest.org. We'll profile several websites with different performance issues to illustrate how to use each tool. In this talk, I'll live-profile several sites to help you see how to approach performance analysis. It's best if you already know how to use the Chrome Dev Tools inspector, but we will approach the performance tools from a beginner's starting point. Attendees should be comfortable with HTML at a minimum.

Help! My app bundle is 5MB! My users are angry that my app is so slow! It’s easy to forget that performance matters when we are under pressure to deliver features quickly. What data should we use to inform our decisions? From code splitting, lazy loading, and tree shaking to bundle analysis, progressive rendering, and modern transpiling, come learn how you can deliver a better experience to your users with high-performing front-end apps. This talk is library-agnostic (React, Angular, Vue, etc.).

Web performance matters. From SEO to bottom-line revenue impacts, performance can make or break your app. However, fixing performance feels like a quagmire of expert-level topics. What if I told you JavaScript bundle sizes could be cut up to 50% by doing one thing only? Nearly 90% of web traffic runs on modern browsers, but we're transpiling all of our JavaScript to ES5. That’s expensive. In this talk, we'll learn about differential serving, or serving both modern bundles and legacy bundles using webpack. This talk is framework agnostic, and best if you have at least a basic understanding of JavaScript.