U.S. shoppers are spending more this holiday season without leaving their homes.

Online sales between Wednesday and Black Friday rose 26.4 percent to $12.3 billion compared to last year, the Wall Street Journal reports. At the same time, foot traffic to retail stores declined about 1 percent year-over-year, according to an estimate from ShopperTrak, a Chicago-based analytics company. A different measurement from RetailNext, an analytics firm that uses cameras to track shoppers in stores, estimates that foot traffic fell between 5 percent and 9 percent compared to 2017. 

The number of U.S shoppers who bought products online for in-store pickup also rose significantly, spiking 73 percent year-over-year, according to data from Adobe. "Retailers have done their part to build better mobile experiences for consumers and turning nearly 10 percent more smartphone visitors into buyers this Black Friday versus last," Taylor Schreiner, director of Adobe Digital Insights, said in a statement.

Meanwhile, Small Business Saturday--launched by American Express in 2010 as a day for U.S. consumers to support small and local businesses--was on track to surpass $3 billion in online sales, having raised 24 percent year-over-year, according to early data from Adobe. Cyber Monday sales, the day when online deals abound, are expected to grow nearly 18 percent from last year, to $7.8 billion.