Is a 200 ms page load reduction significant?

Question

I ran some tests with lab js on one of the sites I developed and got a 200 ms reduction during page load. The total processing time after processing is about 1.5 seconds.

I wandered if it was worth the trouble. 200 ms is a huge gain? Funny? I know that page loading time affects page ranking, but will 200ms matter so much?

Answer 1

Quote Milliseconds are money: how important is work in the cloud :

5) Proof that millisecond matters ...

The big guys in the cloud industry are really deep dug and have proven that these milliseconds matter:

• For every 100 ms, Amazon.com load time decreased by 1% (Kohavi and Longbotham 2007).

• Google found that a change from loading a page with 10 results in 0.4 seconds to loading a page by 30 results in 0.9 seconds reduced traffic and ad revenue by 20% (Linden 2006).

• Google Search found that a delay of 400 milliseconds caused search queries / users to change by -0.59%. Moreover, even after eliminating the delay, these users still had less than -0.21% of requests, which indicates that a slower user interface affects long-term behavior.

• Another study by Google found that an additional 500 ms at boot time led to a 20% reduction in traffic.

• Yahoo also found that 5-9% more people would see a slower 400ms page before the page finished loading.

I think this answers your question.

Answer 2

An absolute gain of 200 ms is not a huge IMHO gain.

But ... If you spend several days on optimization, and every day you manage to get 200 ms, it will become significant.

What should you ask yourself: when I open my page, do I feel like clicking or not? As if you were a decapitated caffeinated monkey, which I mean.

If you want to stay, then do not optimize. If you feel that you have seen too many microseconds with a blank white page before loading the page, continue optimizing.