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PDFを無料でオンライン分割する方法 — PDFページの分離

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What Is PDF Splitting?

PDF splitting is the process of extracting specific pages from a PDF document or dividing a multi-page PDF into separate, smaller files. You select which pages you want, and the tool creates a new PDF containing only those pages.

This is different from simply deleting pages. When you split a PDF, the original file stays intact. You create a new, smaller document with only the pages you need — perfect for sharing specific sections without sending the entire file.

Why Split PDF Files?

Splitting PDFs is one of the most practical document management tasks. Here are the top reasons to split your PDFs:

1. Extract Specific Pages

You received a 50-page report but only need pages 12 through 15. Instead of sending the entire file, extract just those four pages into a clean, focused document.

2. Meet File Size Limits

A 40MB PDF exceeds Gmail's 25MB limit, Outlook's 20MB limit, and WhatsApp's 16MB limit. Splitting the document into two or three parts lets you send each part separately within the allowed size.

3. Organize Large Documents

Break a long manual, textbook, or report into chapters or sections. Each section becomes its own file, making it easier to navigate, share, and reference specific parts.

4. Remove Confidential Pages

When sharing a document externally, you may need to exclude pages containing sensitive or confidential information. Splitting lets you share only the approved pages.

5. Prepare Documents for Different Recipients

A combined report might have sections relevant to different departments or clients. Split the document so each recipient gets only the pages relevant to them.

How to Split a PDF Online — Step-by-Step Guide

Follow these steps to split your PDF using EasyTools24. The entire process takes less than a minute.

Step 1: Open the Split PDF Tool

Navigate to the Split PDF tool page in any browser. No software installation, no account creation, and no subscription required.

Step 2: Add Your PDF File

Drag and drop your PDF into the upload area, or click to browse and select it from your device. The tool displays all pages so you can see what you are working with.

Step 3: Select the Pages to Extract

Choose the pages you want to include in your new PDF. You can select individual pages, page ranges, or a combination of both. The tool gives you full control over which pages to keep.

Step 4: Download Your Split PDF

Click Split and download your new PDF containing only the selected pages. The process takes seconds. Your file never left your device — 100% private.

Tips & Best Practices

Preview Before Splitting

Always preview the page thumbnails before splitting. This helps you confirm you are extracting the correct pages, especially in documents where page numbers do not match the PDF page index.

Combine with Compression

After splitting, use the Compress PDF tool to reduce the extracted pages even further. This is especially useful when the split PDF still exceeds an upload limit — for example, bringing a 20MB section under Gmail's 25MB cap or WhatsApp's 16MB cap.

Use Split to Create Chapter Files

For long documents like textbooks or manuals, split by chapters. Name each output file clearly (e.g., "Chapter-1.pdf", "Chapter-2.pdf") so you can find specific sections quickly later.

Common Use Cases

PDF splitting is used daily across many industries and personal tasks:

Students extracting specific chapters from textbooks for study sessions
Lawyers isolating relevant pages from lengthy legal filings for court submissions
HR professionals extracting individual resumes from a combined applicant PDF
Accountants separating monthly statements from a quarterly report bundle
Real estate agents pulling specific property sheets from a multi-listing document
Researchers extracting key sections from academic papers for reference libraries

よくある質問

How do I split a PDF for free?+

Open the Split PDF tool on EasyTools24, upload your PDF, select the pages you want to extract, and click Split. The tool is completely free with no registration required.

Is it safe to split PDF files online?+

Yes. The Split PDF tool processes your files entirely within your web browser using pdf-lib. Your files are never uploaded to any server, stored, or transmitted. Unlike iLovePDF or Smallpdf which upload files to servers, your document stays on your device.

Can I extract specific pages from a PDF?+

Yes. The Split PDF tool lets you select individual pages, page ranges, or any combination. For example, you can extract pages 1, 3, 7-12, and 25 into a single new PDF. You have complete control over which pages to include.

How do I split a large PDF for email?+

If your PDF exceeds the 25MB Gmail limit or 20MB Outlook limit, use the Split PDF tool to divide it into two or three smaller parts. Send each part as a separate email attachment. You can also compress each part afterward using the Compress PDF tool for even smaller file sizes.

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