Merge PDFs
Drop two or more PDFs, drag them into the order you want, and download a single merged file. Everything happens on your device.
Drop your PDFs here
or click to browse — pick several
How it works
pdf-lib loads each PDF in memory, copies the pages into a new document, and saves it. No re-rendering, no quality loss, vector content stays vector.
When this is useful
- Combining a cover letter, resume, and references into one file.
- Stitching scanned pages from multiple batches into one document.
- Building a single PDF for a court filing or contract package.
FAQ
Are my PDFs uploaded anywhere?
No. The merging runs in your browser using pdf-lib. Disconnect your internet after the page loads and the tool still works.
Can I reorder the files before merging?
Yes. Drag the file rows to change the order. The merged file follows the order shown.
Is there a file count limit?
Practically, your device's memory. Dozens of normal PDFs are fine.
What about password-protected PDFs?
Encrypted PDFs need to be unlocked first. Use our Unlock PDF tool.