Files to merge
0 files
☰ Drag rows to reorder. The merged PDF will follow this order.
Combine multiple PDFs into one. Drag the files to reorder them before merging. All processing is done locally in your browser.
PDFZero combines multiple PDF files into a single document entirely inside your browser. Add the PDFs you want to merge, drag them into the order you need, and download the combined file — no upload to a server, no signup, and no watermark. Because merging happens locally using pdf-lib, even sensitive or confidential documents never leave your device.
Merging PDFs is useful for combining scanned pages into one document, assembling a report from multiple sections, joining invoices or receipts into a single file, or putting together a portfolio. Instead of juggling separate files, you get one PDF with all pages in the order you choose.
No. You can add as many PDF files as you like. Since merging happens in your browser rather than on a server, there's no artificial file-count or file-size limit — performance depends only on your device.
Yes. Drag and drop the file rows to reorder them. The merged PDF will follow the exact order shown in the list, with all pages of each file kept together in sequence.
No. PDFZero merges your PDFs locally in your browser using WebAssembly. Your files are never sent to a server, which means there's no risk of your documents being stored, logged, or accessed by anyone else.
No. Merging simply combines the existing pages from each PDF into one file — it doesn't re-render or recompress any content, so the original quality of every page is preserved exactly.
No. The merge tool is completely free, requires no account, and doesn't add a watermark to your downloaded file.