SAN FRANCISCO – Twitter appears ready to loosen its decade-old restriction on the length of messages in a bid to make its service more appealing to a wider audience accustomed to the greater freedom offered by Facebook and other forums.

CEO and co-founder Jack Dorsey telegraphed Twitter’s intentions in a tweet posted Tuesday after the technology news site Re/Code reported the company is exploring increasing its limits on text from 140 characters to as many as 10,000. Dorsey didn’t directly address the Re/Code report that cited unnamed people, but he made it clear that Twitter isn’t wedded to the 140-character limit. He illustrated his point by posting a screenshot of a text consisting of 1,325 characters.

If Twitter were to allow tweets to span 10,000 characters, it could produce 1,700-word dissertations, based on the size of Dorsey’s extended post.

San Francisco-based Twitter Inc. declined to comment on its plans.

In his message, Dorsey wrote that Twitter has already noticed that many of its roughly 300 million users already have been including screenshots of lengthy texts in their tweets. He indicated Twitter is examining ways to give people more room to express themselves without polluting the service with gasbags.

Imposing some restraint “inspires creativity and brevity. And a sense of speed. We will never lose that feeling,” Dorsey pledged.