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Harry Roberts

@csswizardry.com

6.1K followers 180 following 320 posts

🚀 Independent Web Performance Consultant • Speaker • Google Developer Expert, Web Performance • Accepting new clients • https://harry.is/for-hire

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Harry Roberts @csswizardry.com · Aug 8

🧑‍💻 I wasn’t going to mention this until next week but it’s Friday—treat yourself!

I’ve just launched a members-only subscription: screencasts, Q&A, mentoring, discounts, and more.

👉 csswizardry.gumroad.com/l/subscribe

I’ve been writing or creating content in some form or another since 2009. Some of you have been with me since the very beginning. That over 15 years!The articles and research I publish on csswizardry....

csswizardry.gumroad.com

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Harry Roberts @csswizardry.com · 10d

Me too!

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Harry Roberts @csswizardry.com · 10d

Mailchimp. Expensive but also very mature feature set.

Harry Roberts @csswizardry.com · 11d

Moi? 😇

Harry Roberts @csswizardry.com · 12d

If your company has just laid you off, sneak `v` and `version` into the allowlist before you leave 👀

Harry Roberts @csswizardry.com · 12d

Allowlisted params (e.g. ?utm_source) can be reused in HTTP cache!

IntentToShip @intenttoship.dev · 12d

Blink: Intent to Ship: No-Vary-Search support for the HTTP disk cache

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Harry Roberts @csswizardry.com · 12d

I just gave a deep dive with examples (this is perfect for things like Black Friday!) for Subscribers.

👉 csswizardry.gumroad.com/l/subscribe

For over 15 years, I’ve been sharing practical, real-world insights on web performance. Free, open, and available to everyone. Now, I’m inviting you to join a new community of performance enthusiasts ...

csswizardry.gumroad.com

Harry Roberts @csswizardry.com · 12d

Allowlisted params (e.g. ?utm_source) can be reused in HTTP cache!

IntentToShip @intenttoship.dev · 12d

Blink: Intent to Ship: No-Vary-Search support for the HTTP disk cache

groups.google.com

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Harry Roberts @csswizardry.com · 13d

Thanks dude!

Harry Roberts @csswizardry.com · 14d

It’s hard to explain in writing and I can’t really screen-share my logged-in view, but if you have multiple @cloudflare.social accounts and zones, try clicking this link:

dash.cloudflare.com?to=/:account...

Neat!

Harry Roberts @csswizardry.com · 14d

[email protected] showed me this hyper elegant deep-link approach that @cloudflare.social provide: `dash dot cloudflare dot com/?to=/:account/:zone/speed/optimization/protocol`

This lets you select your Cloudflare account and zone before taking you to its correct Protocol dashboard!

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Harry Roberts @csswizardry.com · 18d

I recently started instrumenting both @cloudflare.social and browser cache hits/misses and the numbers, while obvious, are compelling. The best request is the one that never happens. Check that 0ms TTFB 😍

℅ @speedcurve.com

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Reposted by Harry Roberts

Bram @bram.smulders.social · 19d

Build for the web, Build on the web, Build with the web.

An excellent take from @csswizardry.com on progressive enhancement, SPA frameworks and staying as close to the platform as possible.

csswizardry.com/2025/01/buil...

Build for the Web, Build on the Web, Build with the Web – CSS Wizardry

What is the real, long-term cost of adopting a JavaScript framework?

csswizardry.com

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