(Adds background) Dec 9 (Reuters) - Australia's Nitro Software...

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Dec 9 (Reuters) - Australia's Nitro Software Ltd (NTO) said on Friday it got a higher A$2 per share offer with a scrip alternative from private equity firm Potentia Capital, matching a rival bid from KKR Inc's KKR.N Alludo.

Nitro said it would consider the offer from Potentia, its biggest shareholder with a 19.8% stake, without providing additional details.

Nitro, a PDF and e-signature software signing company, backed a near A$500 million offer from Alludo in October.

Alludo did not immediately respond to a Reuters request for comment. ($1 = 1.4771 Australian dollars)