US President Donald Trump has met with Twitter chief Jack Dorsey and spent a significant time questioning him about why he has lost some Twitter followers, according to reports.

Key points: Mr Trump lost 204,000 followers in July when Twitter started its purge of suspicious accounts, according to a social media data firm

Mr Trump lost 204,000 followers in July when Twitter started its purge of suspicious accounts, according to a social media data firm The President and Republicans have criticised the company and its social media competitors for what they have called bias against conservatives

The President and Republicans have criticised the company and its social media competitors for what they have called bias against conservatives Twitter has denied the claims

The meeting came hours after Mr Trump again attacked the social media company over his claims it was biased against conservatives.

"Great meeting this afternoon at the White House with Jack from Twitter," Mr Trump tweeted.

"Thank you for the time," Mr Dorsey tweeted in reply.

"Twitter is here to serve the entire public conversation, and we intend to make it healthier and more civil. Thanks for the discussion about that."

Earlier on Tuesday, Mr Trump suggested Twitter was biased against him, without providing evidence.

He wrote on Twitter that the company "[did not] treat me well as a Republican … very discriminatory".

Twitter said in a statement that Mr Dorsey had a "constructive meeting with the President of the United States today at the President's invitation".

"They discussed Twitter's commitment to protecting the health of the public conversation ahead of the 2020 US elections and efforts underway to respond to the opioid crisis."

Unlike other major US tech company executives, Mr Dorsey had not previously met with Mr Trump.

He was not invited to a December 2016 meeting with Mr Trump that featured other major tech companies, and Reuters reported in 2016 that Mr Trump had been angry with Twitter because it had rejected an advertising deal with his campaign.

Trump upset at losing followers

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In October, Mr Trump wrote that: "Twitter has removed many people from my account and, more importantly, they have seemingly done something that makes it much harder to join — they have stifled growth to a point where it is obvious to all."

Any reduction is likely the result of Twitter's recent efforts to remove millions of suspicious accounts after it and other social media services were used in misinformation campaigns attempting to influence voters in the 2016 US presidential race and other elections, Reuters reported in October.

Shares in Twitter jumped 13 per cent on Tuesday (local time) after it reported quarterly revenue above analyst estimates, which executives said was the result of weeding out spam and abusive posts and targeting ads better.

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Mr Trump lost 204,000, or 0.4 per cent, of his 53.4 million followers in July when Twitter started its purge of suspicious accounts, according to social media data firm Keyhole.

Mr Trump has one of the most followed accounts on Twitter. But the President, his supporters, and Republicans in Congress have repeatedly criticised the company and its social media competitors for what they have called bias against conservatives, something Twitter denies.

Democratic US senator Mazie Hirono said earlier this month: "We cannot allow the Republican party to harass tech companies into weakening content moderation policies that already fail to remove hateful, dangerous and misleading content."

Carlos Monje, Twitter's public policy director, said at a Senate hearing earlier this month the site "does not use political viewpoints, perspectives or party affiliation to make any decisions, whether related to automatically ranking content on our service or how we develop or enforce our rules".

Reuters