About the Merge PDF
Merging PDFs is usually the step where a free tool stops being free. The first two files go through, then a sign-up wall, a watermark or a daily limit appears, and the documents you merged have already been uploaded to a server you know nothing about. Contracts, bank statements and signed forms are exactly the files that should not take that trip.
This tool merges in your browser. Each PDF is read into memory on your device, its pages are copied into a new document in the order you set, and the result is downloaded straight to you. Nothing is transmitted, there is no account to create, and there is no cap on how often you use it.
Pages are copied as they are rather than re-rendered, so text stays selectable and searchable, links keep working and nothing is re-compressed. A merged file is roughly the size of its parts added together.
Drop in as many files as you need, use the arrows to set the order, and download. Each file is checked the moment you add it, so a damaged or password-protected PDF is flagged by name straight away instead of failing the whole merge at the end.
To turn photos or scans into a PDF first, use the image to PDF converter and merge the result here. To add a signature to the merged document, open it in the PDF signer.