Merge PDF is a free online tool that combines two or more PDF files into a single document. Drop your files, arrange them in the order you want with the arrow buttons, and download the merged PDF - no signup, no watermark, no file-count limits beyond your device's memory.
Merge PDF
1. Drop your PDF files below (or click to browse). 2. Reorder them with the arrow buttons. 3. Click “Merge PDFs” and download the combined file.
Drop PDF files here or click to browse
Multiple files allowed · processed locally on your device
How to merge PDF files in 3 steps
- Drop two or more PDF files into the upload area above.
- Arrange them with the arrow buttons in the order you want them in the final document.
- Click “Merge PDFs” and download your combined file.
How do I merge PDFs for free?
Drop your PDF files into the upload area, reorder them with the arrow buttons, and click “Merge PDFs” to download one combined document. There is no file-count limit beyond your device’s memory, no signup, and no watermark on the merged file.
Everything runs locally in your browser, so even large merges stay private - your files are never uploaded to a server.
Will the merged PDF keep the original page sizes?
Yes. Pages are copied exactly as they are, so original page sizes, orientation, text, and image quality are preserved with no re-rendering and no quality loss.
If you only need some pages from each file, use our free Split PDF tool first, then merge the results.
Frequently asked questions
How many PDFs can I merge at once?
There is no artificial limit - you can merge as many PDFs as your device's memory can handle. For very large jobs, merging in smaller batches works best.
Are my files uploaded to a server?
No. All merging happens inside your browser with JavaScript. Your files never leave your device, so they can't be stored, sold, or leaked.
Can I change the order of the PDFs before merging?
Yes. After dropping your files, use the up and down arrow buttons next to each file to arrange them exactly how you want the final document.
Will the merged PDF have a watermark?
No. The merged PDF contains only your pages - we never stamp branding or watermarks onto your documents.
Does merging change page size or quality?
No. Pages are copied as-is, so original page sizes, orientation, text, and image quality are preserved exactly.
What about password-protected PDFs?
Encrypted or password-protected PDFs aren't supported. Remove the password first (for example in your PDF reader), then merge.