PDF 分割
特定のページを抽出、またはすべてのページを個別の PDF ファイルに即座に分割します。ファイルはデバイスに残ります。
ローカル優先の PDF 分割
必要なものだけを正確に抽出。
PDF をアップロードし、ページ範囲を指定して、新しいファイルを書き出します。すべてブラウザのメモリ上で安全に行われます。
PDF はブラウザで処理されます。ファイルはアップロードされません。
How Split PDF Works
ConvertUnlimited utilizes pdf-lib, a modern JavaScript library for PDF manipulation that runs natively in your browser. When you upload a document, our tool parses its internal structure locally. Based on your specified ranges (e.g., "1-3" or "5, 10"), it creates a new PDF container and copies the specific page objects into it.
Because all logic is executed on your device's CPU and RAM, your documents are never transmitted over the internet. This local-first architecture ensures 100% privacy for sensitive files like medical records, legal contracts, and personal documents.
Why Split PDF Files?
- Extracting Specific Pages: Grab only the summary or the signature page from a long report.
- Separating Large Documents: Break a massive ebook into chapters for easier reading.
- Privacy Protection: Remove unnecessary pages before sharing a document with others.
- Organization: Split a multi-scan PDF into individual one-page documents.
Page Range Examples
Our tool supports flexible syntax for selecting pages:
- Single Pages: Type
5to extract only page 5. - Continuous Ranges: Type
1-3to extract pages 1, 2, and 3. - Complex Combinations: Type
1-3, 5, 8-10to extract pages 1, 2, 3, 5, 8, 9, and 10 into one new file.
Frequently Asked Questions
Can I split every page at once?
Yes. Use the "すべてのページを分割" button to automatically generate a separate PDF for every single page in your document. These will be bundled into a convenient ZIP archive for download.
Does it work with encrypted PDFs?
Password-protected files cannot be split unless they are decrypted first. Please remove the password using a dedicated utility before using this tool.
Browser Support
This tool works in all modern browsers supporting the File API and WebAssembly, including Chrome, Firefox, Safari, and Edge.
Privacy Policy
Your Documents: We do not collect, store, or transmit any PDF files. All processing is strictly local to your machine.
Analytics: We use Google Analytics 4 to monitor site traffic. This data is anonymized and does not include your file content.
Advertising: We use Google AdSense to display ads. These partners may use cookies to serve relevant ads based on your browsing history.
Terms of Use
ConvertUnlimited is provided "as is" without warranty of any kind. You are responsible for the content you process and must ensure you have the legal right to split the documents you provide. We are not liable for any data loss resulting from the use of this tool.