Pat Greenhouse/Globe Staff

Michael Margolis, center, of Google Ventures helped CustomMade cofounders Mike Salguero, left, and Seth Rosen tweak their site.

Pat Greenhouse/Globe Staff

Previous to Google's help, 97 percent of visitors to CustomMade's website weren’t ordering anything. Margolis, right, spoke to Amy Eastment of CustomMade.

Pat Greenhouse/Globe Staff

CustomMade is one of 11 Boston-area start-ups and more than 90 nationwide that get special attention from the Internet search giant.

Pat Greenhouse/Globe Staff

Before its new site was launched, Margolis conducted user tests to tweak the site, based on potential customer responses.

Pat Greenhouse/Globe Staff

A week after the makeover, CustomMade saw a 200 percent jump in the number of people logging in to start projects, Rosen, left, said.