無料ツール

複数のPDFを一つの文書に結合し、順序を設定するためにドラッグして、数秒でダウンロード — すべてブラウザで完結。アカウント不要。

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使い方

4ステップでPDFを結合する

  1. 1

    Upload your PDF files

    Drag and drop two or more PDF files onto the tool, or click to browse. Files are loaded directly in your browser — they are never sent to any server.

  2. 2

    Reorder the files

    Drag the file rows to set the order they will appear in the merged document. You can also remove any file from the list before merging.

  3. 3

    Click Merge

    Click the Merge button. pdf-lib combines the PDFs in your chosen order entirely within your browser — no processing on any server.

  4. 4

    Download the merged PDF

    Your browser downloads the finished file immediately. The merged PDF contains every page from every file in the exact order you chose.

Signvoyを選ぶ理由

プライバシーを守るために設計

Private by design

Your PDFs are processed entirely in your browser. Nothing is uploaded, stored, or transmitted. Close the tab and every trace is gone.

Instant — no account needed

Drop in your files, set the order, and download in under a minute. No sign-up, no email confirmation, no waiting.

Unlimited, no watermarks

Merge as many files as you need with no daily limits, no usage caps, and no watermark added to your output.

他の人に署名してもらうためにドキュメントを送る必要がありますか?

この無料ツールはセルフサービスの一段階ドキュメント作業をカバーします。Signvoyの完全プラットフォームは、ビジネスに必要なすべてを追加します:複数の署名者への送信、署名順序の強制、改ざん防止の監査証跡の取得、リマインダーの自動化、完成したすべてのドキュメントへの完了証明書の添付。

  • 複数当事者の署名
  • 改ざん防止の監査証跡
  • 完了証明書
  • 再利用可能な署名テンプレート
  • 順次・並行ルーティング
  • 自動リマインダー
  • REST API & Webhook
  • 条件付きフィールドロジック

よくある質問

よくある質問

Is this PDF merger free to use?
Yes — completely free with no account, no credit card, and no usage limits. Everything runs in your browser.
Are my files uploaded to a server?
No. Your files never leave your device. All merging happens locally in your browser using pdf-lib. Closing the tab discards everything.
How many PDFs can I merge at once?
There is no hard limit. In practice, very large batches (50+ files) may be slow depending on your device's memory. For most use cases — combining a few reports, chapters, or scans — performance is instant.
What is the maximum file size?
Each individual file can be up to 25 MB. This covers the vast majority of documents. For very large or scanned PDFs, consider compressing them first.
Does the merged PDF preserve bookmarks, forms, and annotations?
Basic page content (text, images, vector graphics) is fully preserved. AcroForm fields are copied but may lose interactivity depending on the original. Bookmarks (outlines) are not merged in this tool.
Can I merge more than two PDFs?
Yes. Add as many PDF files as you need and drag them into the order you want before merging.

署名の催促をやめよう

Signvoyを使って取引を成立させ、クライアントをオンボーディングし、契約書に署名している数千のチームに参加しましょう — より速く。

クレジットカード不要 · 永久無料プラン · 14日間プロトライアル