About this tool
Combining several PDFs into a single document — scanned pages, multiple reports, or separate contracts — is a common need that usually requires dedicated software or a paid service. This tool merges any number of PDF files into one, with drag-to-reorder support so you can arrange pages in the correct final order before combining, rather than being stuck with whatever order you uploaded them in. Once merged, the combined PDF can be downloaded immediately. Since the merge happens entirely in your browser using PDF-processing JavaScript libraries, the files never pass through an external server, which matters when merging anything containing private or confidential content.
Frequently asked questions
Can I control the order of the merged files?
Yes — drag and drop the uploaded files to reorder them before merging; the final PDF follows that order.
Is there a limit to how many PDFs I can merge?
There's no fixed limit we impose, though very large or numerous files may take longer since everything processes in your browser's memory.
Does merging affect PDF quality?
No, pages are combined as-is without re-compressing or altering their content or resolution.
Are my files uploaded to a server during merging?
No, the entire merge process runs locally in your browser using JavaScript.
Can I merge password-protected PDFs?
Password-protected files typically need to be unlocked first, since the merge process needs to read each file's actual page content.