21 ms·It's an extension of pdf.js, not a fork.by robocop2018 6y agoIt's an extension of pdf.js, not a fork.detaro 6y agoThe parent didn't ask if it was a fork or not.bdcravens 6y agoThe point being that this is an extension, and contributing back to that dependency is orthogonal.detaro 6y agoIf they contribute back was the question.