Merge PDF Online

Combine multiple PDF files into a single document. Drag to reorder before merging.

🔒 Files stay local Free

📄

Drop PDF files here

or click to select — up to 50 PDFs, 200 MB each

How to Merge PDF Files

Click the area above or drag and drop multiple PDF files onto it.

Drag the files in the list to set the order in which pages will appear in the merged PDF.

FileWorks combines all pages into a single PDF entirely within your browser.

Your merged PDF downloads directly to your device. No server involved.

PDF files (.pdf). All files must be valid, non-encrypted PDFs.

Maximum 50 PDFs and 200 MB per file. Very large files may take longer to process depending on your device.

Files are processed in your browser using pdf-lib. They are never uploaded to any server.

The merged PDF downloads directly from your browser memory to your device.

Is this PDF merger free to use?

Yes, FileWorks PDF Merge is completely free. No subscription, no sign-up, no limits on personal use.

Are my PDFs uploaded to a server?

No. All merging happens in your browser using the pdf-lib JavaScript library. Your files never leave your device during processing.

Can I merge password-protected PDFs?

Currently, password-protected (encrypted) PDFs cannot be merged. Please remove the password protection first using your PDF viewer.

Will the merged PDF look exactly the same?

Yes. Page content, dimensions, and orientation are preserved. pdf-lib is a well-tested library used by millions of applications.

How many PDFs can I merge at once?

Up to 50 PDF files at once. Each file can be up to 200 MB. For very large batches, processing depends on your device's available memory.