Amazon.com Inc.’s Prime Day sale helped boost online spending across all retailers in the US by 30.3% to $24.1 billion, according to Adobe Inc., topping its estimate for 28.4% growth for the period ending July 11.

The figures apply across all online retailers for Amazon Prime Days. Tariffs and economic uncertainty are on the minds of shoppers as they prepare for Amazon's summer Prime Day sales. But at least one company is forecasting that sales for the online sales event will break records as budget-conscious shoppers look for deals.

The first four-day-long Prime Day sale, is expected to generate as much spending as two Black Fridays, Adobe reports today, with AI tools and influencers driving growth.