How to Use the Merge PDF
- Select or drag in the PDF files you want to combine.
- Reorder the files into the sequence you want.
- Click merge to build the combined PDF.
- Download your single merged document.
Frequently Asked Questions
Are my PDFs uploaded to a server?
No. Merging happens entirely in your browser using pdf-lib — your files are never uploaded, giving you full privacy.
Is there a limit on how many PDFs I can merge?
There's no fixed limit, but very large files are constrained by your device's memory since all processing is local.
Can I change the order of the files?
Yes. Rearrange the files before merging so the pages appear in exactly the order you want in the final document.
Does merging reduce quality?
No. Pages are copied as-is into the new document, so text and images keep their original quality.