Remove tag jank
article thumbnail

10 things I love about SpeedCurve (that I think you'll love, too)

Speed Curve

Third parties add tons of value by increasing conversions (via targeting beacons) and helping you understand your users in unprecedented ways (via analytics tags). If you include those attributes, it's an easy way to make the image placeholders on your page stable and eliminate annoying jank.) – your page renders.

article thumbnail

Front-End Performance Checklist 2021

Smashing Magazine

web-vitals library can collect and send Core Web Vitals to Google Analytics, Google Tag Manager or any other analytics endpoint. So, if your year-over-year web performance metrics stay stable, that's usually a warning sign as you're actually regressing as the environment keeps improving ( details in a blog post by Gilles Dubuc ).