Fundamentals × What Makes a Website Slow?

Fundamentals × What Makes a Website Slow?

In this episode of Syntax, Wes and Scott talk through all the reasons your website might be slow, and how you can troubleshoot a slow website such as issues on the server, large assets, caching, CSS, JavaScript, latency, and more. Sentry - Sponsor If you want to know what’s happening with your code, track errors and monitor performance with Sentry. Sentry’s Application Monitoring platform helps developers see performance issues, fix errors faster, and optimize their code health. Cut your time on error resolution from hours to minutes. It works with any language and integrates with dozens of other services. Syntax listeners new to Sentry can get two months for free by visiting Sentry.io and using the coupon code TASTYTREAT during sign up. Show Notes 00:11 Welcome Glove 80 keyboard Raycast 03:06 Sponsor: Sentry 05:15 What makes a website slow? Uses.tech 06:29 Server Generation Times 13:33 Large payloads Redis Gzip Brotli compression Cloudflare Cloudinary 18:13 Assets being too large 23:01 Caching assets 28:25 CDN 30:35 Caching 101 37:04 Render blocking requests 40:01 CSS 42:25 JavaScript 44:51 Latency 49:17 Flash of dark mode or unsigned out 55:00 Data uris Content-visibility vite-plugin-singlefile Pool in your URL 58:11 SIIIIICK ××× PIIIICKS ××× ××× SIIIIICK ××× PIIIICKS ××× Scott: 3Blue1Brown Wes: Suavecito Firme Clay Pomade Shameless Plugs Scott: LevelUp Tutorials Wes: Wes Bos Tutorials Tweet us your tasty treats Scott’s Instagram LevelUpTutorials Instagram Wes’ Instagram Wes’ Twitter Wes’ Facebook Scott’s Twitter Make sure to include @SyntaxFM in your tweets

Avsnitt(986)

986: Does Code Quality Matter Anymore?

986: Does Code Quality Matter Anymore?

In this potluck episode, Wes and Scott answer your questions about popover navigation patterns, the Vibrate API on iOS, whether code quality still matters in the AI era, Wes’s evolving Obsidian second...

11 Mars 58min

985: Stop putting secrets in .env

985: Stop putting secrets in .env

Scott and Wes are joined by Phil Miller and Theo Ephraim to talk about Varlock, a new approach to environment variables that adds schemas, validation, and security to the humble .env file. They dig in...

9 Mars 47min

984: How to Make a DOM Library Render Anything w/ Paolo Ricciuti

984: How to Make a DOM Library Render Anything w/ Paolo Ricciuti

Wes and Scott talk with Paolo Ricciuti about Svelte custom renderers and how Svelte actually talks to the DOM. They dig into compiler internals, CSS handling, native bridges, and the realities of main...

4 Mars 49min

983: Why I Chose Electron Over Native (And I’d Do It Again)

983: Why I Chose Electron Over Native (And I’d Do It Again)

Wes and Scott talk about building v_framer, Scott’s custom multi-source video recording app, and why Electron beat Tauri and native APIs for the job. They dig into MKV vs WebM, crash-proof recording, ...

2 Mars 37min

982: Bots Are Ruining the Internet

982: Bots Are Ruining the Internet

Wes and Scott talk about the latest dev news: Node enabling Temporal by default, OpenAI acquiring OpenClaw, TypeScript 6, new TanStack and Deno releases, the explosion of AI agent platforms, and more....

25 Feb 49min

981: Browsers Are Finally Catching Up (Interop 2026)

981: Browsers Are Finally Catching Up (Interop 2026)

Scott and Wes unpack Interop 2026 and the browser features finally aligning across engines, from container style queries and anchor positioning to scroll-driven animations and view transitions. They b...

23 Feb 51min

980: AI Coding Explained

980: AI Coding Explained

Wes and Scott talk about the state of AI coding in 2026—from editors and models to agents, skills, slash commands, MCPs, and more. They unpack what these things actually do, how they overlap, and how ...

18 Feb 52min

979: WebMCP: New Standard to Expose Your Apps to AI

979: WebMCP: New Standard to Expose Your Apps to AI

Scott and Wes unpack WebMCP, a new standard that lets AI interact with websites through structured tools instead of slow, bot-style clicking. They demo it, debate imperative vs declarative APIs, and s...

16 Feb 16min

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