Ordering questions
The merged document follows your file list top to bottom — order is entirely yours to set. Numbered filename prefixes (01-, 02-, 03-) make sequencing nearly automatic and prevent the most common merge regret: chapters in the wrong sequence.
To merge only certain pages rather than whole files, split the source PDFs first, then merge the extracted pieces. The two tools are designed to work as a pair.
Content and quality questions
Merging does not alter content: text remains text, images remain images, formatting and fonts carry over unchanged. It is a page-level combination, not a re-render — what went in is what comes out, in your chosen order.
File size of the merged PDF roughly equals the sum of the sources. Merging neither compresses nor inflates beyond that; if you need a smaller file afterward, compress the merged result as a separate step.
Limits and practical questions
There are no accounts, watermarks, or page-count limits — merge what you need. Processing runs locally in your browser, so very large files are limited only by your device's memory, which handles everyday documents comfortably.
Scanned PDFs merge like any others; just verify scan orientation first, since sideways pages stay sideways. The merged file keeps a standard PDF structure any reader opens.
Privacy questions
Merging happens entirely in your browser: files are read from disk, combined in memory, and returned as a download. Your documents never travel to any server.
No account, no history, no retained copies — closing the tab ends the session. For contracts, applications, and financial documents, local-only merging means sensitive paperwork never leaves your hands.
Questions about the tool itself
The merger is free with no account, no watermarks, and no page limits — combine as many PDFs as your project needs. It runs in any modern browser on desktop or mobile, and the interface is available in 15 languages.
Because merging happens locally in your browser, the tool keeps working even if your connection drops after the page loads. There is nothing to install and nothing to update — you always get the current version automatically.
Your files are never uploaded, stored, or logged: they are read from your disk, combined in memory, and returned as a download. Closing the tab ends the session completely, leaving no trace of your documents behind. If a colleague asks whether the tool is safe for sensitive files, the honest answer is architectural: there is simply nowhere for the files to go but back to you.
Frequently asked questions
How do I set the page order when merging?
Arrange the file list in your desired sequence before merging — output follows the list top to bottom. Numbered prefixes make this easy.
Does merging reduce PDF quality?
No. Merging combines pages as-is without re-rendering; content, text, and images carry over unchanged.
Can I merge scanned PDFs?
Yes. Scanned pages merge normally — just check orientation first, since a sideways scan stays sideways in the output.
Are my documents uploaded anywhere?
No. Everything runs locally in your browser; your PDFs never leave your device.