PDF Merge
Combine PDFs into one file.
Runs in your browserShortcutsMergeCtrl⏎DownloadCtrlS
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About
PDF Merge combines multiple PDFs into one file, with drag-to-reorder file ordering and a page-1 thumbnail of each document so you can confirm the order before merging. The merge runs with pdf-lib entirely in your browser — your files are never uploaded to a server, which matters for anything containing sensitive documents. Very large or numerous PDFs may take a few seconds longer, since all the work happens on your device rather than a server.
Frequently asked
- Are my PDFs uploaded to merge them?
- No — merging runs entirely client-side using pdf-lib; your files never leave your browser, which is worth knowing if the documents are sensitive.
- Can I reorder the files before merging?
- Yes, files can be dragged into any order, and a thumbnail of each PDF's first page helps you confirm you have the right order before merging.