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PDF結合

複数のPDFファイルを1つのドキュメントに結合。ドラッグ＆ドロップで並べ替え可能な無料オンラインPDF結合ツール。

Privacy-first

Clear file handling

Batch-ready

Built for real workflows

Fast workflow

Progress and feedback

Smart controls

Useful options, not clutter

Upload PDF Files

Drag and drop PDF files here, or click to browse. You can add multiple files.

pdf .pdfUp to 100 files
Instant process End-to-end encrypted Clipboard paste

Merge PDFs without changing the page order

Combine two or more PDF files into one document, choose the order before processing, and download the finished file. This is useful when reports, scanned pages, invoices, forms, or supporting documents need to travel as one file.

When to merge PDFs

Merge PDFs when several related files belong together: a report with its appendices, a scanned application with supporting pages, or multiple project documents that need one shareable file.

Before you download

Check the file order and page count. If a page belongs in the wrong place, reorder the source files before merging rather than fixing the finished PDF later.

Smart workflow

Do more in the same workflow

Build from the job you started: batch compatible files, keep the right output format, then move straight into the next useful step without hunting through the site.

Input

.pdf

Output

PDF

Batch

100+ files per run

Built for batch work

100+ files per run. Use one run when the files share the same task.

Continue the job

Choose a related operation below instead of starting from scratch.

Output-ready

Results stay focused on download, preview and the next useful action.

File-size clarity

No fixed file-size limit per configured tool limit.

Natural next steps

Continue with a related tool using the same file workflow.

Alternate MergeSplit PdfOrganize Pdf

Smart workflows

Finish the job, not just the file

Use the existing tool graph to continue into useful next steps. Bulk and output-packaging capabilities are surfaced automatically where the underlying tool supports them.

Bulk processingZIP-ready outputWorkflow-ready

Merge → compress → package

Bulk-ready

Combine a document pack, reduce the final PDF when useful, and keep the finished file ready for download or archive.

  1. Merge Pdf
  2. Compress Pdf
Output: Compact merged PDF

Best for reports, receipts, applications and client packs.

Continue

Merge → number → deliver

Bulk-ready

Build one ordered PDF and add final pagination before delivery.

  1. Merge Pdf
  2. Page Numbers
Output: Numbered document pack

Best for formal reports and submission packs.

Continue

Merge, compress and share

Bulk-ready

Combine documents and immediately reduce the finished PDF for easier sharing.

  1. Merge Pdf
  2. Compress Pdf
Output: Compact merged PDF

Best for email, portals and client delivery.

Continue

Create a secure document pack

Bulk-ready

Merge documents, add a watermark and protect the final PDF.

  1. Merge Pdf
  2. Add Watermark
  3. Encrypt Pdf
Output: Protected document pack

Best for contracts, reports and controlled distribution.

Continue

Merge and clean the pack

Bulk-ready

Combine documents, remove blank pages and optimize the result.

  1. Merge Pdf
  2. Remove Blank Pages
  3. Compress Pdf
Output: Clean compact PDF

Best for scanned batches with accidental blank pages.

Continue
Merge PDFs as a workflow, not a button

Make the next step easier

Combine documents in the order you actually need, then download one clean PDF instead of juggling separate files.

Bulk PDF selection

Visual reordering

Large-batch workflow

One final PDF for sharing or submission

A smoother workflow

  1. 1Add your source PDFs
  2. 2Drag them into the correct order
  3. 3Review the sequence
  4. 4Merge and download

A human tip

Why merging PDFs is usually a preparation task

People merge PDFs because something else is waiting at the end: a submission, a client handoff, an archive, or a single document to sign. The experience should therefore focus on confidence—clear ordering, predictable output, and no surprise quality loss.

Split PDFCompress PDFPDF Multi Tool

Merge PDFs without changing the page order

Combine two or more PDF files into one document, choose the order before processing, and download the finished file. This is useful when reports, scanned pages, invoices, forms, or supporting documents need to travel as one file.

When to merge PDFs

Merge PDFs when several related files belong together: a report with its appendices, a scanned application with supporting pages, or multiple project documents that need one shareable file.

Before you download

Check the file order and page count. If a page belongs in the wrong place, reorder the source files before merging rather than fixing the finished PDF later.

About This Tool

PDF結合を使用すると、複数のPDFドキュメントを素早く簡単に1つのファイルに結合できます。レポートの統合、スキャンしたドキュメントの結合、プレゼンテーションの作成など、このツールでプロセスがシームレスになります。

ファイルをアップロードし、ドラッグ＆ドロップで希望の順序に並べ替え、1つのまとまったドキュメントに結合するだけです。ツールは元のファイルの品質を保持し、オプションで各ソースドキュメントのブックマークを維持できます。

すべての結合はブラウザ内でローカルに行われ、機密ドキュメントの完全なプライバシーが確保されます。

How to Use

  1. PDFファイルをアップロード

    複数のPDFファイルをアップロードエリアにドラッグ＆ドロップするか、クリックしてデバイスからファイルを選択します。

  2. 順序を並べ替え

    ファイルのサムネイルをドラッグ＆ドロップして希望の順序に並べ替えます。

  3. 結合してダウンロード

    結合ボタンをクリックしてすべてのファイルを結合し、結合されたPDFをダウンロードします。

Use Cases

レポートの結合

月次または四半期レポートを1つの年次ドキュメントに結合し、配布とアーカイブを容易にします。

ポートフォリオの作成

複数のプロジェクトドキュメント、証明書、作品サンプルをプロフェッショナルなポートフォリオに結合します。

請求書の統合

複数の請求書や領収書を1つのドキュメントに結合し、会計と記録管理に役立てます。

Frequently Asked Questions

何個のPDFを結合できますか？+

最大100個のPDFファイルを一度に結合でき、合計サイズは最大500MBです。

結合されたPDFは元の品質を維持しますか？+

はい、結合プロセスは圧縮や品質低下なしにすべてのドキュメントの元の品質を保持します。

パスワード保護されたPDFを結合できますか？+

パスワード保護されたPDFは最初に復号化する必要があります。結合前にPDF復号化ツールを使用してパスワードを削除してください。

Smart workflows

Finish the job, not just the file

Use the existing tool graph to continue into useful next steps. Bulk and output-packaging capabilities are surfaced automatically where the underlying tool supports them.

Bulk processingZIP-ready outputWorkflow-ready

Merge → compress → package

Bulk-ready

Combine a document pack, reduce the final PDF when useful, and keep the finished file ready for download or archive.

  1. Merge Pdf
  2. Compress Pdf
Output: Compact merged PDF

Best for reports, receipts, applications and client packs.

Continue

Merge → number → deliver

Bulk-ready

Build one ordered PDF and add final pagination before delivery.

  1. Merge Pdf
  2. Page Numbers
Output: Numbered document pack

Best for formal reports and submission packs.

Continue

Merge, compress and share

Bulk-ready

Combine documents and immediately reduce the finished PDF for easier sharing.

  1. Merge Pdf
  2. Compress Pdf
Output: Compact merged PDF

Best for email, portals and client delivery.

Continue

Create a secure document pack

Bulk-ready

Merge documents, add a watermark and protect the final PDF.

  1. Merge Pdf
  2. Add Watermark
  3. Encrypt Pdf
Output: Protected document pack

Best for contracts, reports and controlled distribution.

Continue

Merge and clean the pack

Bulk-ready

Combine documents, remove blank pages and optimize the result.

  1. Merge Pdf
  2. Remove Blank Pages
  3. Compress Pdf
Output: Clean compact PDF

Best for scanned batches with accidental blank pages.

Continue

Continue with a related tool

Split PDF

Separate pages when one document needs to be divided.

Organize PDF

Reorder pages before creating the final document.

Compress PDF

Reduce the final file size for sharing or upload.

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