Hey all! On GTmetrix all my Webflow websites used to get an A-score, but now many of them are performing less (B, C or D score) while I didn’t change anything on the websites or re-published them.
They mention that the top issue is ‘long main-thread tasks’. Usually I would start with tracing back my steps and see what caused it, but since these issues appeared out of nowhere I can’t do that…
The one tool that is used by almost every “site performance” service is lighthouse. Which is found in most all chromium dev tools. It changes frequently so how things are measured is not static.