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In this world of mobile growth, the time it takes for content to reach our visitors is a number we want to be as small as possible. Images have a huge impact on our page weight and load times, so let's examine how to choose and serve our images wisely.
Let's Talk About Responsive Images and Performance
Let’s Talk About
OUR SITE SIZES
NEED TO SHRINK
is how long you have for the user to feel like the task was
is how long you have for the user’s state of ﬂow to remain
uninterrupted (though the delay will still be noticeable)
is how long you have before the user loses interest entirely and
will want to multitask while the task is completing
To keep an uninterrupted ﬂow,
we want to aim for a ﬁrst
render time of
of people abandon a website
that takes more than 3 seconds
AKAMAI has reported that 75%
of online shoppers who
experience an issue such as a site
freezing, crashing, taking too long
to load, or having a convoluted
checkout process will not buy from
WALMART.COM found that for every
second of load time improvement,
conversions increased by up to 2%
STAPLES.COM found that for every one
second of improvement conversions
increased by 10%
Over the last 2 years, the average web
page size has grown from:
Images on the web can
account for up to 75% of
our total page loading time!
Image use is now averaging
a whopping 1243KB on
IMAGE STRATEGY needs to
be a top priority for enhancing
The Speed Index metric measures how
page loading is perceived by users than
load time is.
The industry goal is a speed index of
We want our pages to load in 3
seconds or under on a cable
40% of people abandon a website that
takes more than 3 seconds to load.
The 20% rule from Steven Seow states that
people perceive tasks slower or faster when
there is a difference of at least 20% from the
We need to make our site 20% faster than our
own site and/or top competitors.