Name: JSNation 2025
Start: 2025-06-12T11:00:00.000Z
End: 2025-06-16T19:00:00.000Z

A behind-the-scenes look at running the "State of" series of developer surveys (State of JS, CSS, etc.) as well as lessons learned and upcoming trends.

The State of the Web

Sacha Greif

Chrome Built-in AI APIs

Thomas Steiner

Modern JavaScript bundlers are architectural marvels that transform complex codebases into optimized production assets. This technical deep dive deconstructs how bundlers like Vite, webpack, or Rollup work under the hood, revealing the engineering that powers our build tools. We will journey through the bundling pipeline, starting from the understanding of the AST, parsing and static analysis for dependency resolution, some core optimizations like tree-shaking and code spitting, closing with some advanced concepts like HMR.

Bundlers: A Deep Dive into Modern JavaScript Build Tools

Edoardo Dusi

Dive into the environmental impact of the web through key insights from the HTTP Archive Almanac 2024. Discover shocking statistics about web sustainability, from massive page weights to unused code, and learn practical, immediate solutions to reduce your website's carbon footprint. This talk combines hard data with actionable strategies to make the web greener

Web Almanac 2024: Is the Web Sustainable? 

Burak Güneli

JS Nation

I’m attending JSNation – the main JavaScript conference of the year. You may join me there for free with 10k other JS engineers and 40+ great speakers. Just follow this badge. 

#javascript

Discover the future of the JavaScript development ecosystem and get connected to its stellar crowd! 

JSNation is the best place to learn about JavaScript – beside the main JS conf talks and panel discussion with high-profile specialists, be prepared for awesome MCs, in-depth workshops, a number of discussions & networking rooms, interactive entertainment, and engaging challenges for all participants.

JSNation 2025

FocusReactive

Hygraph

JetBrains

Storyblok

Sentry

Handsontable

Twilio

Bloomberg

Auth0 by Okta

Chainlink Labs

Codeium

Holepunch

A front-end component that combines data grid features with spreadsheet UX/UI. Professional support included. Works with React, Angular, Vue, and plain JavaScript.

Chainlink is the industry-standard Blockchain services platform

Storyblok is a CMS that works with all modern frameworks and platforms so you are completely free to choose the best option for your project. Kickstart a new CMS project with your favorite technology in a matter of minutes, and for free.

Storyblok is a Headless CMS that works with all modern frameworks and platforms so you are completely free to choose the best option for your project. Get started in a matter of minutes!

Get 14 days of Storyblok for Free

Sentry is essential for monitoring application code quality. From Error tracking to Performance monitoring, developers can see clearer, solve quicker, and learn continuously about their applications — from frontend to backend.&nbsp;

Twilio is a Cloud Communications Platform for developers. If you would like to send an SMS, program a phone call or send a Whatsapp message; you can do all of that and more with Twilio.

Get RCS on Twilio Messaging — no code changes required

With 10,000+ front-end apps + one of the world’s largest JavaScript/TypeScript codebases, @TechAtBloomberg is deeply committed to using JS/TS in building the world's most trusted information network for finance pros.

Enhance user authentication, simplify identity management, and provide a seamless login experience.

Level up your app's authentication with Auth0 by Okta

Codeium is the FREE, supercharged code copilot, helping devs write over 44% of their code and ship faster. Loved by hundreds of thousands with a near perfect 5 star rating.

Pear Runtime by Holepunch is an open-source combined Peer-to-Peer 🍐Runtime development &amp; deployment tool. Build, share &amp; extend zero-infrastructure P2P applications.

FocusReactive will help you architect, build, and lead technically advanced websites focusing on performance and scalability. Partners and <a href="https://focusreactive.com/next-js-expert-agency/" target="_blank" rel="noopener noreferrer">experts in Next.js/Vercel</a>, Storyblok, Sanity, Contentful, Shopify Hydrogen, and other Headless eCommerce platforms.Whether you seek <a href="https://focusreactive.com/headless-cms-expert-agency/" target="_blank" rel="noopener noreferrer">expert Headless CMS agency</a> services or an expert agency with deep experience with platforms like Headless <a href="https://focusreactive.com/react-cms/" target="_blank" rel="noopener noreferrer">React CMS</a> &amp; <a href="https://focusreactive.com/nextjs-cms/" target="_blank" rel="noopener noreferrer">NextJS CMS</a>, FocusReactive is the one to help you scale.

As a special perk, we're offering a complimentary&nbsp;<a href="https://focusreactive.com/nextjs-performance-audit/" target="_blank" rel="noopener noreferrer">NextJS audit</a> designed to pinpoint areas for optimization, improve performance, and ensure you're following the best practices for SEO and security.&nbsp; Our expert team will closely examine your implementation, provide actionable insights, and help you leverage the full power of NextJS.

JSNation 2025

The main JavaScript conference of the year