Online sales during the recently concluded holiday season rose to $91.7 billion, topping 2015's tally by 11 percent.

That's according to Adobe, which says over $1 billion in sales were generated on 57 of the 61 days between Nov. 1 and Dec. 31.

Mobile sales — those made on smartphones and tablets — rose 23 percent to $28.43 billion.

Adobe says it measures 80 percent of all online transactions from the top 100 U.S. retailers.

Separately, ComScore says its data shows a 12 percent increase in desktop online holiday sales, to $63.1 billion. Cyber Monday — the Monday after Thanksgiving — ranked as the year's heaviest spending day, with desktop buying exceeding $2 billion for the third straight year.