Harry Roberts @csswizardry
🚀 Independent Web Performance Consultant • Speaker • Google Developer Expert, Web Performance • Accepting new clients • https://t.co/dfDc69bpeD csswizardry.com Leeds, England Joined March 2009-
Tweets49K
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Followers66K
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Following454
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Likes7K
⁉️ We improved FCP but Blocking Time got worse—WHY?! csswizardry.com/2026/06/front-…
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Harry Roberts retweeted
I GOT THE DOMAIN! I FINALLY GOT IT!!!!!!!!!!1 🥳🎉 Paint.NET is now at paint.net! Well, it will be just as soon as I push all the buttons to migrate content and set up redirects from getpaint.net etc. For now it's just a "hey go here" redirect page.
Done! Nice to do a talk on home soil.
🎤 I’m speaking at @LeedsJS TONIGHT! Free to attend. Be there or be aspect-ratio: 1; meetup.com/leeds-js/event…
@BenjaminCoe @sentry Messaged! Thanks so much.
Is there anyone at @sentry I can speak to about RUM? Client already has an account so I don’t need a salesperson; I just want a bit of a tutorial, please!
🚨 Warning! `font-family` doesn’t fall back the way you think… csswizardry.com/2026/04/font-f…
@jidefr @webstandardsdev Baffling and unnecessary imo!
📖 Some advice for times of uncertainty: When All You Can Do Is All or Nothing, Do Nothing. csswizardry.com/2026/03/when-a…
Harry Roberts retweeted
I built Yoast SEO. I ran my blog on WordPress for years. Then yesterday I moved it to static HTML. Everything that matters, SEO, search, schema, is still there. What I dropped was the overhead. Do you actually need a CMS? For quite some sites: no. joost.blog/do-you-need-a-…
@saltnburnem Happy birthday my man! Have a great birthday weekend
📽️ Slides from my #WebDayOut talk, ‘Build for the Web, Build on the Web, Build With the Web’. speakerdeck.com/csswizardry/bu…
Can you believe it’s #webdayout week this week? Tomorrow, I’ll be debuting a new talk here in beautiful Brighton. Who’s gonna be here?
@cooperx86 Ahhhh fair! Best of a bad bunch haha.
@sergical It makes sense to me: more/deliberate effort to permanently turn the alarm off than a simple tap.
@maxvoltar It’s pretty exuberant! I like it but it’s not like many pens I’ve used before. Bought it specifically to write a friend’s birthday card.
Your phone contacts isn’t your data, it’s lots and lots and lots of other peoples’ data. I’m stunned that this feature was ever implemented anywhere. Giving everyone else’s phone numbers to a third party without their consent?! 🤯
If you want to find your phone contacts on 𝕏, just turn on this option. It helps 𝕏 connect you with people already saved in your phone. Settings → Privacy & Safety → Discoverability and Contacts → Sync Address Book
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