Blackbird measures your ecommerce site speed and shows you the impact it has on sales. Try free for 30 days.
Brighton, England
Joined October 2020
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Blackbird retweeted
Impressive read on how a few tweaks could more than halve the load time for a fashion retailer.
Plenty of practical advice included, which I would highly recommend checking out.
-> Improving Page Speed for Norse Projects by @davepeiris via @tryblackbird tryblackbird.com/blog/norse-…
Blackbird retweeted
Simple yet significant thing all developers should keep in mind: CSS resources (fonts, background images) are not requested by your CSS, but by the DOM node that needs them [Note: slight oversimplification, but the correct way to think about it.]
From today, Blackbird has switched over to the new method of tracking Cumulative Layout Shift, so your data should be similar to Google's tooling too
Starting today, a CLS change that better accounts for long-lived pages has been rolled out across a number of Chrome's web tooling surfaces including @____lighthouse, PageSpeed Insights, and @ChromeUXReport ✨
web.dev/cls-web-tooling/
If you're using polyfills to ensure your site works for older browsers, you can use nomodule to save modern browsers having to download that script: tryblackbird.com/blog/nomodu…
Blackbird retweeted
I found some web performance issues with Tesla's Cybertruck page, and then spent longer than I want to admit on this: tryblackbird.com/blog/cybert…
Amazing work from the Jewellerybox team!
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Big fan of the UI update to WebPageTest - really great, clean design, and super useful to see FCP, LCP and layout shifts in the waterfall
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Blackbird retweeted
Issue 114: Blending Data & Lessons Learned
Post of the Week 🔥
@AndrewCMiller
Sponsor 💪
@contentking
Featuring 👇
@ItamarBlauer
@tryblackbird
@tomcritchlow
@marysryu
@NickLeRoy
@wissi_analytics
👉 theweeklyseo.com/issues/114
Learn how to use Local Overrides to test site speed changes quickly, without having to involve your dev team: tryblackbird.com/blog/local-…
Blackbird retweeted
📱 Ever had to test site-speed in iOS Safari? It’s pretty straightforward once you have it all set up: csswizardry.com/2021/02/meas…
Blackbird retweeted
Core Web Vitals and SEO:
"The update on May 31 (2021) will result in a positive ranking signal for page experience in mobile search only for groups of similar URLs which meet all three Web Vital targets. The impact of the signal is expected to be small.”
simonhearne.com/2021/core-we…
Blackbird retweeted
💌 The first Making Websites Fast email has just gone out, with useful articles from @csswizardry, @ksylor, @simonhearne, @addyosmani and @smashingmag
⚡️ If you’re into site speed, this is for you: mailchi.mp/0188f8cba63e/3tgy…
You can sign up for more here: tryblackbird.com/newsletter
Blackbird retweeted
If anyone missed my talk about "How to read a WebPageTest waterfall chart" from @LDNWebPerf on Tuesday, it's now been uploaded to YouTube: youtube.com/watch?v=THmJwZPG…
#webperf #perfmatters
Blackbird retweeted
If you're into site speed (or want to be better at it), then you might like the new monthly newsletter I'm putting together, Making Websites Fast, showcasing the best of web perf: tryblackbird.com/newsletter
This is a really, really great listen - lots of useful info including how HTTP/2 really works, the hidden cost of JavaScript frameworks, and why custom metrics in #webperf are so important.
🎙 I had a really, really great time chatting with @drewm for @SmashingPod. We take a look at the state of web performance in 2021, and I’d highly recommend you give it a listen! smashingmagazine.com/2021/01…
Blackbird retweeted
🧵 Two of my most- and first-used checks when doing a performance audit are surprisingly old school: 1) Validate HTML 2) Disable JS.
Understanding the critical path is a huge step towards improving your ecommerce site speed
Load your CSS as fast as possible
Be careful with synchronous JavaScript in the <head>
Self-host critical CSS, JS and fonts
tryblackbird.com/blog/critic…
Speed metrics like LCP are great, but there could be things that are more important for you to track (like when the first product image loads on your ecom category pages). Here's how to track your own custom speed metrics: tryblackbird.com/blog/custom…
Blackbird retweeted
So much #webperf goodness here. I'm *especially* excited about f-mods and the potential to prevent layout shifts on font swaps 💖
🎥 New talk: Beyond fast! A whirlwind tour of new features & proposals to improve the performance of your pages.
➡️ content-visibility
➡️ Font metric override descriptors
➡️ BFCache
➡️ Portals
➡️ Preloading
…all in 12 minutes by talking very very fast.
youtube.com/watch?v=Z6wjUOSh…
We used the @ChromeUXReport to track the site speed of 800+ ecommerce sites, and are showcasing the fastest 100: showcase.tryblackbird.com/
(Updates every Sunday)