Twitter is working on a product that will allow users to share content longer than 140 characters, technology website Re/code has reported.

It is unclear what the product will look like, Re/code said.

Twitter executives are also discussing changes to how the 140-character limit is measured, such as excluding links and user handles from the count, Re/code reported, citing people familiar with the matter.

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Twitter did not immediately respond to a request for comment.

Online magazine Slate’s senior technology writer Will Oremus has speculated it would be a feature that would allow users to publish notes directly to Twitter rather than linking to them.

“In all likelihood, the text of tweets themselves will remain capped at 140 characters in most cases,” he wrote.

“As a result, your Twitter feed will continue to look much the same as it does today.

“The difference will be that, for certain tweets, you’ll have the option to click or tap a button … to view the full article or blog post without leaving your Twitter feed.”

The company removed the 140-character limit from its direct messages last month.

Increasing the limit has been discussed at Twitter for years, more so in recent months under interim chief executive Jack Dorsey as the company looks to grow its user base, sources told Re/code.

Twitter shares were up 1 per cent at $A36.55 in afternoon trading on the New York Stock Exchange.

Up to Monday’s close (local time), the stock had fallen nearly 30 per cent this year.