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The e-retailer increased conversions by eliminated tools that dragged down load time.
A year ago, TheMedicalSupplyDepot.com’s conversion rate was low and its bounce rate was high, and the e-retailer of medical and health products wasn’t entirely sure why. Examining the site’s web analytics, president Meir Tsinman saw that about a quarter of visitors left the site after looking at just one web page and that the conversion rate was higher for visitors that accessed the site from high-speed internet connections.
Tsinman quickly zeroed in on his prime suspect. “The pages were just taking much too long to load,” he says. Instead of meeting his goal of having each page load in two seconds or fewer, pages were taking much longer to load, although he doesn’t disclose a specific average.
Tsinman put the site through an intense, six-month review with the assistance of software vendor NetSuite Inc., which helped him understand and clean up what was causing the site’s slow load time. The culprit, Tsinman says, was the number of servers the site had to connect with to fully render a page. Before the review TheMedicalSupplyDepot.com had to make and process 80 requests from 16 outside vendors to fully render the home page. Outside vendors provided functions like user reviews and product comparison tools, which Tsinman admits are important features, but not important enough to justify slow load times. NetSuite research shows conversion rates drop 7% for every second it takes a web page to load.
Tsinman says he realized it wasn’t possible to load pages in less than two seconds with all the vendor tools he was using, and even more especially when a portion of TheMedicalSupplyDepot.com’s target audience still accessed the site with a slow internet connection. “Our elderly demographic is still getting started used to the internet and are still using a dial-up connection,” he says.
“We had third-party tools that took a second each to load,” Tsinman says. “We had to ask: ‘Are those really important enough to have my customers wait to have the page load?’”
The site took a dramatic step a lot of e-retailers would be unwilling to make, said Andy Lloyd, general manager of e-commerce products at NetSuite. It removed every script from every vendor to see exactly how fast the site could load if it only had to download data from the retailer’s own web server. Then it slowly added one script back to the site and tested its page load speed. Then it removed it and tested the next one until it had a good grasp on what effect each vendor script had on page-loading time. “People do a lot to their sites on a day-to-day basis, but are not consistently cataloging what is actually going on on their sites,” Lloyd says. “What we did here was track what was going on on the site and see what was affecting it.”
The e-retailer also realized it needed to make other improvements that would decrease load times. Tsinman’s team rewrote the site’s basic site code to make it simpler and sized down large images, for example. They also made sure to cache certain site features with web browsers so the browsers would not have to process new requests each time the features needed to appear.
At the end of the process, TheMedicalSupplyDepot.com cut the number of outside vendor scripts it embeds on its site to seven from the original 16. The site now makes 52 outbound requests, down from 80. It also worked with the vendors to reduce the amount of time it takes to load their code onto the retailer’s site. For example, a web site analytics script from Celebros took 984 milliseconds to load prior to the review; after working with the vendor, the time dropped to 250 milliseconds.
Tsinman did not disclose how long it takes for his site to load today, but did say key metrics greatly improved. Average number of pages viewed went up 20%, time on site went up 50%, the bounce rate improved by 40% and the conversion rate improved by 50%, he said.
Tsinman was careful to say that third-party scripts aren’t bad, just so long as e-retailers understand the trade-off they may be making for having them. “A vendor may tell you, ‘I can increase your conversions by 5%,’”, he says. “But if it takes a second or two to load, what help is that? Always choose the speed of your site, the performance, over the features. If a customer cannot land on that page, you can have all the beautiful features you want but no one will use it.” He says he will reintroduce some of the functionalities the site removed once it can do so without slowing site load times.