PDF Merger

Most documents that matter are assembled from pieces. A signed contract and its appendix. An invoice and the receipts behind it. A form, a photo of your ID and a proof of address. Sending them as separate attachments makes the recipient do the assembly, and things get lost that way.

PDF Merger combines them into one file. Select at least two documents — the merger asks for two rather than quietly producing a copy of one — and they are joined in the order you set.

Ordering is the part that is awkward in most phone tools and easy here. Each selected file has up and down controls, so you arrange the sequence before merging rather than discovering afterwards that the signature page landed at the front. The order on screen is the order in the finished PDF.

You also choose how the output is laid out: A4 or US Letter, portrait or landscape, with a margin you can adjust. Mixing sources that were built for different paper sizes is the usual cause of a merged document that prints with odd gaps.

The merge happens on your phone. Free web tools generally work by uploading your files to a server, combining them there and sending the result back — which is fine for a menu and not fine for a payslip or a signed agreement. Nothing here is uploaded, and the finished file stays on your device.

It is a premium tool, unlockable for a session with one short ad on the free plan.