How to Merge PDF Files

1. Click Choose PDF Files and select the PDF documents you want to combine.
2. Check the order of the selected files. The first PDF in the list will become the first PDF in the merged document.
3. Drag the files to rearrange their order if necessary.
4. Click Merge PDF Files.
5. Download the newly created PDF document.

How Does PDF Merging Work?

A PDF merge combines the pages of several PDF documents into a single PDF file. Instead of keeping separate files for related documents, you can create one continuous document that is easier to store, share, print, or submit.

For example, if you have three PDF files containing a cover letter, supporting documents, and an application form, you can place them in the desired order and merge them into one PDF.

The original pages are copied into a new PDF document. The tool does not convert the pages into screenshots, so the resulting file remains a PDF document.

When Is a PDF Merger Useful?

Combining PDFs can be useful whenever several related documents need to be handled as one file.

Tips for Better PDF Merging

• Put your files in the correct order before merging.
• Use descriptive filenames so that you can identify each document easily.
• Very large PDFs may take longer to process and may require more browser memory.
• If your browser becomes slow while processing very large documents, try merging fewer files at a time.
• Check the final PDF after merging to make sure all required pages are present and in the correct order.

🔒 Your PDF Files and Privacy

This tool is designed to process selected PDF files directly in your web browser. The files are read by JavaScript and processed using the PDF library running on your device.

This means the tool does not need to upload your PDF documents to a server simply to merge them. This can be especially useful when working with documents that contain information you do not want to send to an online service.

Things to Know

• The tool combines existing PDF pages; it does not edit the text inside your PDFs.
• The original PDFs are not modified.
• Password-protected or encrypted PDFs may not be mergeable if their contents cannot be opened by the browser-based PDF processor.
• Extremely large or complex PDFs may require considerable memory and processing time.

Frequently Asked Questions

Can I merge more than two PDF files?

Yes. You can select multiple PDF files and combine them into a single document.

Does the order of the PDFs matter?

Yes. The PDFs are merged from top to bottom in the order displayed in the file list. You can drag files to change their order before merging.

Are my PDF files uploaded to a server?

No. The merging process is performed in your browser. The selected files are processed locally by the JavaScript PDF library.

Will the original PDF files be changed?

No. The original files remain unchanged. The tool creates a separate merged PDF.

Can I merge PDFs containing many pages?

Yes, provided your browser and device have enough available memory to process the documents. Very large or complex PDFs may take longer.

Why can't one of my PDFs be merged?

A PDF may fail to load if it is damaged, encrypted, password-protected, or uses features that the browser PDF processor cannot handle. Try opening the PDF first or creating a new copy of it before attempting to merge.

Will merging reduce the quality of my PDF?

The tool copies PDF pages into a new PDF rather than converting the pages into ordinary images. However, the resulting file can have a different file size depending on the contents and structure of the original documents.