With modern development tools, it’s easy to locate the exact code that’s slowing down your application, but what do you do next? Why exactly is it slow, and how do you make it fast?

Pros and cons of creating class and function components in React vs Vue vs Svelte.

When building apps, we focus on minimizing costs, time to market, bugs, bundle size, application speed, SEO, but we spend almost no effort trying to minimize the damage our applications are making to the environment.

WebAssembly, the new low-level bytecode format for the Web, could seem like a complicated topic to some. Vlad provides you with required WebAssembly knowledge.

The ownership of the npm package 'event-stream' changed hands, late 2018, and found its way into the hands of an attacker, targeting a Bitcoin wallet.

Commenting code is a more nuanced thing than we give it credit for.

What do CRDTs and frontends have to do with each other?

See the design and architecture that went into creating a component compiler which generates framework agnostic components.

Acoustic activity recognition can create new interactions and better smart systems. See how you can experiment with JS, Machine Learning, and Tensorflow.js.

Kas discuss the MIDI communications protocol, how we can create and augment music with JavaScript, and will hopefully make you think about how your apps communicate with each other.

Before being a web developer, we are all users of the internet which is a jungle of UX patterns, some bad, some good and some terrible.

Useful techniques for customizing data visualizations, numbers, dates, right-to-left, iconography, and colors for a global audience.

Why does it seem like so many Electron apps consume more resources than their native counterparts?

We are obsessed with coding and creating automated workflows and optimizations. And yet our final products aren't making it easy for people to use them.

Learn how to build a headless e-commerce website using Gatsby, Netlify, and BigCommerce.

Learn how TypeScript came to be, how it differs from classic type systems, and how it can be beneficial even if you don't like types.

Variable Fonts allow typography on the web to adapt to the flexible nature of screens, environments and devices.

A JS-driven app gets a static render, massively improving the time to first render, and time to interactive. See useful build tools, and learn how to avoid all the gotchas.

Explore innovative ways of organizing styles, adding complex interactivity and meaningful transitions.

A deep dive into the specific features of Web Workers that aid in making it possible to perform tasks typically reserved for cloud computing jobs, in the browser.

Learn all about the TC39, the committee working on evolving the JavaScript language standard.

Learn how to convince your team to adopt and use TypeScript effectively.

Join one of WeWork's first hires on his journey & decisions that helped shape the global footprint of it's marketing website and its massive growth.

A decade after Node was first announced, JavaScript and the web platform have evolved. Deno is a new JavaScript/TypeScript runtime—the evolution of Node.

Insights into Smashing Magazine’s Relaunch — with decisions made, failures, successes and lessons learned along the way.

The world of web development is moving fast, and you have to make decisions today on which tools to use.

Learn the alternative ways of presenting 2D content in the browser (CSS, Canvas, WebGL), along with the pros and cons of each one.

Code Tooling 101 with an introduction to Abstract Syntax Trees, and all the weird and wonderful things you can do with them.

Explore new and exciting creative opportunities for storytelling, design and expression in ways standard-fonts could never provide us.

Learn about performance metrics and how to interpret the data to provide the best user experience possible.

Get to know React Query and see how it fits beautifully into React to create a true paradigm shift that makes consumption of async APIs a breeze.

See the optimizations that JavaScriptCore uses to speed up JavaScript execution, and perhaps counterintuitively, how the same optimizations are also being applied to speeding up WebAssembly.

Learn basic HTML and CSS strategies that can immediately be used right along side of your favorite JavaScript framework that will provide a range of benefits.

What can we do to protect our stuff and take back our digital social interactions out of these silo’d spaces and move them to places that we control?

Learn how one of the world’s largest restaurant chains use JAMstack and structured content to rapidly deliver high-quality user experiences.

I’m going to be the meanie in the room who proposes that the J in your JAMstack might not be as performant as you think, and the metrics you're looking at may be misleading you.

We’ll dig into a promising, minimal approach to content management that works the way you do.

Variable Fonts allow typography on the web to adapt to the flexible nature of screens, environments and devices.

These days, as the tools we use to build the web are getting better, easier, and more powerful, we've suddenly become full-stack developers.

Katie's site ohshitgit.com was born our of her frustrations with git. She'll walk us through the migration process to JAMstack, and along the way dive deep into Git's underlying data structures to flesh out our mental model of how Git works, and help us avoid messes before they begin!

Learn how to build a headless e-commerce website using Gatsby, Netlify, and BigCommerce.

With frameworks like Nuxt we can build really cool sites that look and feel like a single page application but are actually static generated.

Learn how to setup and use a WordPress site as a back-end for a static front-end.

JAMStack helped us increase autonomy, find purpose, and own failure, resulting in a meaningful shift to a culture of ownership.

freeCodeCamp.org started out as a traditional Node/Express web app. But as our nonprofit's community grew, speed and reliability became more important.

One of the latest developments in the past couple of years has been the advent of Serverless + GraphQL which allows you to run applications in very cost effective ephemeral services.

We can now do things on the front-end that used to require a back end. When we do need a back end, our front-end skills can be put to work, giving us some surprisingly powerful new abilities.

Development isn't just for professionals, it's for learners, tinkerers, and activists, too. Discover ways to lower the barrier to entry and overhead of maintenance on projects of all shapes and sizes.

Every PWA built or started with preact-cli so far has been promised with a perfect 💯lighthouse score. This talk shows how the next version will improve performance even further.

Building a modern web app is pretty complicated! You need to make pretty things! That are fast! But also useful! Ideally offline! And can accommodate many users!