Merge PDF

Combine multiple PDF documents into a single organized file with drag-and-drop reordering.

🛡️ Privacy Protected: Your selected file is processed in your browser. Some tool libraries or AI models may require an internet connection to load.
Local Processing

How to Use Merge PDF

  1. Step 1: Select or drop multiple PDF files into the merge workspace.
  2. Step 2: Drag and drop or use arrow buttons to arrange files into your desired page order.
  3. Step 3: Remove any unnecessary documents using the delete button on each item.
  4. Step 4: Click Merge PDFs to generate and download your combined document.

Settings & Controls Explained

One Resizer's Merge PDF provides specialized browser-local controls tailored to its workflow:

Supported Formats & Technical Capabilities

Specification Technical Capability
Accepted Input Formats Multiple PDF documents (.pdf)
Output File Formats Single merged PDF (.pdf)
Processing Engine PDF-Lib in-memory copyPages & addPage
Network Privacy Local browser processing (0 bytes uploaded)

Best Practices & Key Recommendations

Troubleshooting & Common Issues

Frequently Asked Questions

You can select multiple PDF files; they are merged sequentially in your browser memory without fixed file count limits.

Yes, you can drag and drop or use arrow buttons to arrange files in the exact sequence you want them merged.

Encrypted or password-locked PDFs must first be decrypted using the PDF Unlock tool before merging.