Addy Osmani

Thanks for reading! I'm so interested to see how fast (and how much) that 80%+ is going to get to 90% for real-world apps.

The Next Two Years of Software Engineering Exploring five critical questions shaping software engineering through 2026, with contrasting scenarios for each. These lenses help prepare for the evolving ...

The next two years of Software Engineering - addyosmani.com/blog/next-tw... ✍🏻

AI writes code faster. Your job is still to prove it works. AI did not kill code review. It made the burden of proof explicit. Ship changes with evidence like manual verification and automated tests, then use review f...

AI writes code faster. Your job is still to prove it works. - addyosmani.com/blog/code-re...

21 Lessons From 14 Years at Google Lessons learned from 14 years of engineering at Google, focusing on what truly matters beyond just writing great code.

Liked this observation from Addy Osmani:

“Abstractions don’t remove complexity. They move it to the day you’re on call.”

addyosmani.com/blog/21-less...

My LLM coding workflow going into 2026 Best practices for staying in control while coding with AI

My LLM coding workflow going into 2026: open.substack.com/pub/addyo/p/...

An absolute pleasure. Thanks for tuning in!

Happy to hear you enjoyed it so far! More to come!

I'm super happy to hear that resonated!

Thanks so much for the kind words!

YouTube video by Google for Developers Software engineering: efficiency vs. effectiveness

Excited to share my new YouTube series on Software Engineering Effectiveness!

www.youtube.com/watch?v=lqcK...

"Critical thinking in the age of AI": addyo.substack.com/p/critical-t... ~ my latest write-up on the importance of retaining critical thinking skills during these times ✍️

Why does "vibe coding" usually not lead to anything productive? A great person to answer is @addyosmani.bsky.social: working on Chrome for 10+ years, and is the author of the book Beyond Vibe Coding.

Watch or listen:

• YouTube: youtu.be/dHIppEqwi0g

• Spotify: open.spotify.com/episode/12dW...

It was such a highlight getting to hang out with you in person, sir!

The present and potential future of progressive image rendering Exploring progressive image rendering across JPEG, PNG, WebP, AVIF, and JPEG XL.

I dug into progressive image rendering and found a bunch of common assumptions aren't quite true.

➡️ JPEG & WebP progressive-renders worse in Safari
➡️ AVIF _does_ support progressive
➡️ But JPEG XL in Safari doesn't
➡️ JPEG XL decodes much slower than AVIF
⬇️ and more

jakearchibald.com/2025/present...

View Transitions are now in all browsers! They also landed in React! developer.chrome.com/blog/view-tr...

Thanks Kevin!

The History of Core Web Vitals This write-up is a history of how Core Web Vitals came to be based on my recollections from our work on it at Google from 2014 onwards

This history of Core Web Vitals by @addyosmani.bsky.social is a great read. addyosmani.com/blog/core-we...

Thanks Jason!

Our pleasure! We hope it's helpful!

Hope folks find DevTools MCP helpful!

Announcing Chrome DevTools MCP! 🚀

Connect your AI coding agent to Chrome's powerful automation & debugging capabilities with ease.

Learn more: developer.chrome.com/blog/chrome-...

Adulthood honestly looks great. Congrats on the solid reviews! Looking forward to watching

The 70% problem: Hard truths about AI-assisted coding A field guide and why we need to rethink our expectations

This great piece by @addyosmani.bsky.social resonates strongly with my recent experience using AI coding agents

How modern browsers work A web developers guide to browser internals

✍️ How modern browsers work addyo.substack.com/p/how-modern... - my write-up on browser internals for web developers

Vibe coding is not the same as AI-Assisted engineering. Can you really 'vibe' your way to production-ready software?

Thank you @addyosmani.bsky.social for being the one to call out the distinction between vibe coding and AI assisted engineering. What a good read: open.substack.com/pub/addyo/p/...

Beyond Vibe Coding Back in May I wrote Two publishers and three authors fail to understand what “vibe coding” means where I called out the authors of two forthcoming books on "vibe coding" …

I spotted that @addyosmani.bsky.social's book on Vibe Coding is now re-titled to "Beyond Vibe Coding" - I think the new title is a huge improvement, really excited to read it when it comes out on 24th September simonwillison.net/2025/Sep/4/b...

Google Chrome at 17 - A history of our browser Chrome turns 17 this week, and it feels like a good time to reflect on how far we have come in terms of Chromes guiding principles

For a some backgrounds on development of Google Chrome, see this excellent post by @addyosmani.bsky.social : addyosmani.com/blog/chrome-...

Patterns.dev Learn JavaScript design and performance patterns for building more powerful web applications.

Patterns.dev — A free, 435+ page book and site on design, rendering, and performance patterns for modern web apps (vanilla JS and frameworks like React), by @lydiahallie.com and @addyosmani.bsky.social .

baseline status now inline on hover for css properties

New in Chrome DevTools: Instantly check CSS feature compatibility with Baseline!

Chrome DevTools now displays the Baseline status for CSS properties right in the Elements panel - Baseline gives you clear info about which web features are ready to use today.

What would you like me to talk about more on here?

🛠️ Chrome DevTools and tooling
🕸️ Web Platform and new APIs
🤖 AI and AI-assisted Engineering
⛰️ Leadership and teams

...or all the above 😂

Let me know and I'll keep it in mind.