PDF 分割 file
Extract one or more page ranges from your document, or save every individual page as a separate PDF.
PDFファイルを選択
or drag and drop PDF here
PDF分割とページ抽出の技術解説ガイド
Large portable document format (PDF) files frequently contain surplus chapters, unrelated appendices, or confidential records that should not be circulated in full. PDF splitting allows engineers, administrative professionals, researchers, and students to isolate and extract key pages into clean, standalone files.
Why Split PDF Documents?
- Reduce Storage & Email Limits: Isolate a 3-page contract section from a 200-page bundle to bypass strict email attachment barriers.
- Protect Privacy: Extract only non-confidential exhibits before sharing a dossier with external partners or clients.
- Modular Document Management: Break massive accounting books, bank statements, or textbooks into chapter-by-chapter references.
Client-Side Partitioning: Privacy Without Compromise
Most legacy online PDF tools require you to upload proprietary records to external cloud servers where unvetted pipelines process them. Document Alter uses modern WebAssembly and HTML5 binary memory buffers to process every single byte locally within your browser. No PDF contents or extracted files ever leave your machine.
3ステップでPDFを簡単に分割する方法
Upload PDF
Click 'Select File' or drop your target PDF document into the workspace area.
Choose Pages
Click pages to select them visually, pick Odd/Even presets, or type custom page ranges.
Extract & Download
Click 'Extract pages' to create your customized PDF files instantly.
よくあるご質問 (FAQ)
DocumentAlterの「PDF分割」にファイルを読み込み、ページ範囲を指定するか全ページを個別に抽出してダウンロードします。
はい。「1-3, 5, 8-10」のようなページ番号指定や、プレビューサムネイルをクリックして選択抽出が可能です。
DocumentAlterは完全無料で高い安全性を誇ります。ブラウザ内RAMで処理されるため、機密ファイルも安心です。