Merge PDF Files
Combine multiple PDF files into a single document. Drag to reorder, preview, and download.
Drop your PDF files here
or browse files — PDF documents only
Free Online PDF Merger
SmarterSources's Merge PDF tool lets you combine two or more PDF files into a single document in seconds. Whether you need to join reports, combine scanned pages, or assemble a complete document from separate files, this tool handles it all directly in your browser with zero uploads and complete privacy.
How It Works
Drag and drop your PDF files into the tool, arrange them in the order you want using drag-and-drop or the arrow buttons, then click "Merge PDFs." The tool reads each document, copies every page in order, and produces a single combined PDF file. The entire process runs on your device, and the merged document is downloaded instantly.
Why Use This Tool
Unlike other online PDF mergers that require you to upload files to remote servers, SmarterSources processes everything locally in your browser. Your files are never sent anywhere, making this the safest and most private way to merge PDFs online. It is completely free with no watermarks, no file size limits, and no account required.
Privacy Guarantee
Your PDF files never leave your device. All merging happens locally in your browser. No files are uploaded to any server, no data is stored, and no third parties ever see your documents. This makes it ideal for merging sensitive or confidential documents.
Frequently Asked Questions
How do I merge PDF files?
Simply drag and drop your PDF files into the tool, or click to browse and select them. Arrange the files in the order you want, then click "Merge PDFs." The combined document will be generated and ready to download in seconds.
Is there a limit on the number of PDFs I can merge?
There is no artificial limit on the number of files. Since all processing runs in your browser, the only constraint is your device's available memory. Most devices can handle merging dozens of PDF files without any issues.
Will the quality of my PDFs be reduced?
No. This tool copies pages directly from the original PDF files without any re-encoding or compression. Text, images, vector graphics, and all formatting are preserved exactly as they are in the source documents.
Can I reorder the PDF files before merging?
Yes. After adding your files, you can drag and drop them into any order, or use the up and down arrow buttons. The merged document will follow the order shown in the file list.
Are my files uploaded to a server?
No. This tool is 100% client-side. Your PDF files are processed entirely within your browser and never leave your device. The merged PDF is generated locally and downloaded directly to your computer.
Can I merge password-protected PDFs?
This tool works with standard, unprotected PDF files. If a PDF is password-protected or encrypted, you will need to remove the protection first before merging. Most PDF readers can save an unlocked copy if you know the password.