Discover UI Design Decisions Of Leading Companies,
From Leaked Screenshots & A/B Tests.

I was glad to detect this carousel experiment that Booking recently ran on their homepage because we've already seen similar experiments fail in the past. Instead of showing 5 location tiles, they tested a version that only showed 3 tiles at a time with an ability to slide for more - a carousel. It wasn't the automatic slider type that would unleash the wrath of Karl Gilis, but it was a user-invoked slider nevertheless. View Leak

In this little experiment, Amazon shifted the availability information towards the center of its product pages. Instead of showing if and when a product will ship near the right add to cart tile, it was moved towards above the product description. Some weeks later, we discovered that this change was rejected in favor of showing the same information in the top right. View Leak

In this tiny and well isolated experiment, Airbnb tried a slightly different approach to displaying customer ratings on their property (product) pages. From the observed implementation decision one month later, we learned that using decimal places for customer rating averages seems to be the better approach. :)  View Leak

Airbnb ran an experiment where they increased the size of the header photo on their Host signup landing page. And interestingly it was rejected a month later.   View Leak

Zalando (Germany) has been experimenting with at least two interesting cascade variations on their product page. Both of these variations seem to have been rejected which is consistent with other evidence in favor of larger buttons.  View Leak

Netflix ran an experiment with two variations of appended secondary links underneath the main "Try It Now" button. One variation had a link urging users to sign-in, while another urged to resume signing-up. Both ideas didn't make it and have been rejected. Here are my thoughts and comparisons on this ... View Leak

What's more important first - search results or recommended alternative questions based on what other users ask? It's now clear that Google ran such an experiment on their search results with a clear decision in favor of the former (showing real search results first). View Leak

If you might recall, some of the recent Netflix homepage experiments weren't so positive as seen here and here. Today however we finally detected what might be considered a successful roll out decision of one variation tested over a month ago. Gladly Netflix doesn't give up. Here are the 3 core changes which we think might have influenced a positive outcome. View Leak

Netflix has been offering a 30 day free trial for Canadians. Sometime in May however we spotted something way more interesting - they began a/b testing different trial durations (30, 14 and 7 days), as well as an immediate payment-first approach (without a trial). View Leak

It seems like Booking just completed running an experiment that is very similar to a recent one from Google. The experiment evaluated icons with labels in the top navigation against a control version with labels only.  View Leak

Perhaps it's no surprise that when people wish to book a getaway, expressing a location is of higher importance than anything else. Interestingly, this has been confirmed in a recent Booking experiment which tested the position of various elements on their homepage. The A/B test, along with its implementation decision, revealed that shifting the location tiles higher up seems to have performed better. View Leak

Take a look at these two screenshots, both taken on May 15, 2019. With some cookie clearing magic in between it's pretty clear that Google ran an icon experiment on their search results page. The control version had labels only in the top nav, whereas the variant contained icons in addition to the labels. The variation was implemented a month later in June. View Leak

Here is a perfectly simple optimization of a "Get started" button on Airbnb's host signup landing page. Airbnb ran an experiment of a smaller vs larger button size. I know because I managed to capture two diverse screenshots with the same date stamp. :) More so, a few months later Airbnb rolled out the later button to 100% of their traffic - hinting at a successful experiment outcome. View Leak

Videos are usually considered a popular growth tactic that people believe will improve conversion or signup rates. Hence I find it really interesting that Airbnb A/B tested a series of videos on their host signup landing page and then rejected them altogether. So why where these video removed? View Leak