Watch Out for Layout Shifts with ‘ch’ Units
In our case, we were using ch
units to define our page layout. This meant that our post content was equal to 50ch
units (or the width of fifty…
Cumulative Layout Shift (CLS) is one of Google's Core Web Vitals, focused on unexpected movement of page content, annoying for users.
A layout shift occurs any time a visible element changes its position from one rendered frame to the next. […] Unexpected movement of page content usually happens because resources are loaded asynchronously or DOM elements get dynamically added to the page above existing content.
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Watch Out for Layout Shifts with ‘ch’ Units
In our case, we were using ch
units to define our page layout. This meant that our post content was equal to 50ch
units (or the width of fifty…
The venerable Time To Interactive (TTI) metric is being removed in Lighthouse 10, with its 10% score weight shifted to Cumulative Layout Shift (CLS),…
I have a client site with a header that is hidden when the user scrolls down, but shown again when the user scrolls up, which seems pretty comon nowadays.
This triggers some CLS, even if the hide/show is done in less than 500 ms, as “continuous interactions such as scrolls, drags, or pinch and zoom gestures are not considered ‘recent input’”. 😞
width
and height
attributes on <img>
help prevent layout shifts (CLS). Values should be unitless integers.
But #Lighthouse sees 100%
as 100
, thanks parseInt()
…
Do you think it should be improved?
Reduce Cumulative Layout Shift (CLS) by adjusting web fonts and system font fallbacks using special @font-face descriptors.
Prevent layout shifts with CSS grid stacks
I keep sending people this clever solution provided by Hubert, I wonder why I still didn't add it to my links! 😎 No more layout shifts! Compared…
Avoiding <img> layout shifts: aspect-ratio vs width & height attributes
Layout shifts are a real annoyance on most sites, so please, read this new gem from Jake, about preventing images layouut shifts the right way… or…
Rhetorical WebPerf question: is it better to have a low or stable Cumulative Layout Shift? 😅
How To Fix Cumulative Layout Shift (CLS) Issues
Barry shows here a few ways to prevent layout shifts and make your visitors happier. All of these techniques basically involve setting aside the correct…
Building a new site with the beautiful Coniferous web font from @OHnoTypeCo and I can't find the right "web safe" fallback font to be able to optimize Cumulative Layout Shifts. 😭
Any suggestion?
How to avoid layout shifts caused by web fonts
One common cause of layout shift is surprisingly difficult to resolve though: flashes of unstyled text (FOUT). In this post we will explore the surprisingly…
If you're using a web font, you're bound to see a flash of unstyled text (or FOUC), between the initial render of your websafe font and the webfont…
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