PDF Merge

複数のPDFを1つに結合。
Drop PDF files here or click to browse

Merge PDFs

Combine multiple PDF files into one.

Reorder

Drag to rearrange page order.

Download

Save merged PDF instantly.

Client-side

All processing in your browser. No data uploaded.

PDF Mergeについて

PDF Merge lets you combine multiple PDF documents into a single, cohesive file entirely inside your browser — no server upload, no account required, and no file size limits imposed by a remote service. Whether you need to consolidate scanned contracts, stitch together report chapters, or bundle presentation slides into one shareable document, this tool handles it in seconds. Simply add the PDFs you want, reorder them by dragging the up and down arrows until the sequence is exactly right, then click Merge & Download. The resulting file preserves every page, annotation, and embedded font from the originals. Because everything runs locally via the pdf-lib library compiled to WebAssembly, your sensitive documents never leave your device, making it safe to use even for confidential legal or financial paperwork.

PDF Mergeの使い方

  1. Click the drop zone or drag your PDF files into it — you can add as many files as you need.
  2. Review the list of added PDFs. Each entry shows the filename and its page count.
  3. Use the up (▲) and down (▼) arrows to reorder the files into the desired sequence.
  4. Remove any unwanted file by clicking the red × button next to it.
  5. Once the order is correct, click "Merge & Download". The merged PDF will download automatically.

よくある質問

Is there a limit on how many PDFs I can merge?

There is no hard limit. You can add as many PDF files as your browser can handle in memory. For very large batches, merging in groups of 10–20 is recommended.

Are my files uploaded to a server?

No. All merging is done locally in your browser using pdf-lib. Your files never leave your device.

Will encrypted or password-protected PDFs work?

The tool attempts to load encrypted PDFs with the ignoreEncryption flag. Most owner-locked PDFs will work, but user-password-protected files may fail to load.

Does merging preserve bookmarks and links?

Page content, fonts, and images are preserved. Complex interactive elements like JavaScript actions or cross-document bookmarks may not carry over.

What browsers are supported?

Any modern browser that supports WebAssembly — Chrome, Firefox, Edge, and Safari 15+ all work.

PDF Mergeの完全ガイド：無料オンラインツール

ブラウザ完結で安全・高速なPDF Merge。開発者やクリエイターの作業を効率化

複数のPDFを1つに結合。を瞬時に実現する無料ツールです。面倒なソフトのインストールは不要で、安全にブラウザ上で処理できます。

PDF Mergeが選ばれる理由

  • 高速処理: ミリ秒単位で即時実行。
  • プライバシー保護: データは端末外に送信されません。
  • 完全無料: 登録不要で制限なく利用可能。

簡単な3つの利用手順

  1. PDF Mergeのページを開きます。
  2. データを入力または貼り付けます。
  3. 結果を確認してコピーまたは保存します。

機能比較

項目 Metoolzy PDF Merge 他社オンラインツール 専用ソフト
料金 完全無料 制限あり 有料ライセンス
セキュリティ 完全ローカル処理 サーバー送信あり ローカル処理

主な活用シーン

  • エンジニアの開発・デバッグ効率化
  • Web制作者の日常作業
  • データ変換・最適化

よくある質問 (FAQ)

入力したデータは保存されますか？

いいえ、すべてブラウザ内で処理され保存されません。