Merge PDF Files Online

Combine multiple PDF documents into one file. Upload your PDFs, arrange them in the order you want, and download your merged document.

✓ Free to use ✓ Up to 20 PDF files ✓ Original page sizes preserved ✓ No registration required
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Choose PDF files to merge

Drag and drop your PDF files here or select them from your device.

PDF only · Maximum 20 files · 20 MB per file

Selected PDF files

No PDF files selected yet.
0 files selected 0 MB
Drag files to change their order. The merged PDF follows the order shown above.

Merge settings

The downloaded file will have a .pdf extension.
Preserve original page sizes and orientation
Your files are processed on the server to create the merged PDF.

How to Merge PDF Files Online

Combining PDF documents is straightforward. Use the following steps to create a single PDF file from multiple documents.

1 Select your PDF documents

Click the Choose PDF Files button or drag your PDF documents into the upload area. You can select multiple files at once.

2 Arrange the PDF files

Review your selected documents. Drag and drop them to change their order, or use the arrow buttons to move individual files up or down.

3 Merge your PDFs

Click the Merge PDF Files button. The tool will combine the pages from your selected documents into one PDF.

4 Download the merged document

Your browser will download the resulting PDF file. You can then save, share, print, or archive it.

Why Use Our PDF Merger?

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Frequently Asked Questions

1. How can I merge two or more PDF files?

Select at least two PDF documents, arrange them in your preferred order, and click Merge PDF Files. The tool combines their pages into one document.

2. Can I change the order of the PDF files?

Yes. You can drag and drop documents in the file list or use the arrow controls to change their order. The resulting PDF follows that order.

3. Are the original page sizes preserved?

Yes. The tool imports each PDF page using its original page dimensions and orientation.

4. Is there a file size limit?

The tool allows up to 20 files, with a maximum of 20 MB per file and 100 MB combined. Actual upload limits may also depend on your web hosting PHP configuration.

5. Can I merge password-protected PDFs?

Password-protected or encrypted PDFs may not be supported by this basic version. Remove the password protection before uploading the documents.

6. Does merging reduce PDF quality?

The tool imports existing PDF pages rather than converting them into images. It therefore avoids the image-quality loss associated with image-based PDF merging. Some advanced PDF features may not be preserved by the free FPDI parser.

7. Is the PDF merger free?

Yes. You can use this tool without registration or a subscription.