Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms.... pdf ' ) page_count = pdf . getPages (). size...size () puts "ページ数:" + page_count . to_s 実行コードをダウンロード 以下のいずれかのソ...