Merge PDFs — Free & Private
Combine multiple PDF files into one document. Drag to reorder pages. 100% offline — your files never leave your device.
Drag & drop files here, or click to browse
Files are processed entirely on your device and are never uploaded to any server.
Frequently Asked Questions about PDF merging
How many PDFs can I merge at once?
You can merge up to 50 PDF files in a single operation. Simply drop all your files at once and drag to reorder them before merging.
Can I rearrange the page order before merging?
Yes! After uploading your PDFs, you can drag and drop the files to reorder them. The merged document will follow the order you set.
Is there a file size limit for merging PDFs?
Free users can merge PDFs up to 50MB each. Pro users can merge files up to 500MB each.
Will merging preserve PDF quality and formatting?
Yes. We use pdf-lib for merging, which copies pages exactly without re-encoding. All text, images, and formatting are preserved.
Are my PDF files safe when using this tool?
Absolutely. All merging happens locally in your browser — your files are never uploaded to any server. This is especially important for confidential documents.