What Merge PDF does
Merge PDF combines two or more PDF files into a single document, in whatever order you choose. It is built for the common situation where a report, contract or application arrives as five separate scans or exports and needs to go out as one file.
The merge runs entirely in your browser. Your files are read, combined and reassembled on your own device using a JavaScript PDF library — nothing is uploaded to a server, so there is no wait for a round trip and no copy of your documents sitting anywhere else.
How to merge PDF files
- Choose two or more PDF files from your device. Each one appears in a list as it loads.
- Reorder the list with the up and down arrows until the pages will read in the order you want.
- Remove any file you added by mistake with the ✕ button.
- Select Merge PDFs and the combined file downloads straight to your device.
Why this matters for larger documents
Page order in the finished file exactly follows the order of the list, so it is worth double-checking the sequence before merging rather than after. Because everything happens locally, there is no practical limit tied to a server queue — the limit is your own device's memory, which in practice handles everything from a two-page cover letter to a stack of scanned chapters.
Common uses
- Job applications — combining a CV, cover letter and certificates into one attachment.
- Scanned paperwork — joining individually scanned pages of a contract or form into one file.
- Reports — assembling chapters or sections exported separately into a single deliverable.
- Invoices and receipts — bundling several documents for a single expense claim.