One of the new features of the latest LEADTOOLS V19 update is a re-factored load algorithm, which has resulted in greatly reduced load times of documents formats such as PDF, MS-Office formats 97-2013 (Word, Excel, and PowerPoint), and TXT. The increase in speed is directly related to the number of pages in the document; the more pages, the greater the increase of speed.
Below is a C# code snippet showing how to use the new feature with the new bits marked.