PDFはビジネスや日常の書類管理でよく使われるファイル形式ですが、編集するには専用のツールが必要です。近年は無料でも高機能なPDF編集ソフトが増えており、テキスト修正やページ整理、形式変換などを簡単に行えるようになりました。

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