Choosing performance help
Questions about baseline tests, affected pages, feature checks and the handoff.
Compare a performance proposalPerformance guides
These guides help you describe the problem, compare proposals and decide what a useful first piece of work should include.
Questions about baseline tests, affected pages, feature checks and the handoff.
Compare a performance proposalSeparate waiting for content from delayed clicks and moving page elements.
Prepare an example of the delaySee why page types, platform limits and connected services affect the work.
Understand scope and estimatesA controlled test uses particular conditions. Visitors use different devices, connections and interactions. Both kinds of evidence are useful, and a proposal should explain which it uses. Google’s Web Vitals guidance describes the distinction.
It may help a particular problem, but it does not establish what is delaying your site. Cache changes also need checks for information that varies by visitor, such as account or cart content.
Send the page address and what feels slow. A short example gives the review somewhere concrete to begin.