Merge PDFs for printing
Combine multiple PDFs into one before sending to the printer. Avoid out-of-order pages and wasted paper. Free, instant, lossless.
Sending five PDFs to a printer separately almost always results in problems: pages come out in the wrong order (especially with shared office printers and multiple users in the queue), separator pages get inserted (those wasteful 'cover sheets' some drivers add), the order in your file manager doesn't match the print queue order, or one of the files times out and the rest print without it. Merging into a single PDF first lets you control the order and submit one print job that's atomic — it either prints completely or not at all.
PDFOnly's merger handles this in seconds. Drop your PDFs, drag the file cards into the order you want them printed, click Merge, send the resulting single PDF to your printer. The print job is one continuous document, pages come out in your specified order, and any printer driver weirdness affects the whole document uniformly instead of fragmenting across multiple jobs.
Frequently asked questions
Will merging break PDFs with different page sizes?
No — the merged PDF preserves each input's original page size. Mixed Letter/A4 documents print correctly with each page on the right paper if your printer auto-selects, or default to one paper size with the others scaled-to-fit if not.
Should I compress before sending to the printer?
For network printing on slow office connections: yes, compression helps the print job spool faster. For local USB printing or fast printers: skip compression — large files print fine and you avoid any quality compromise.
Will my merged PDF print double-sided correctly?
Yes. Modern printer drivers and the PDF spec handle duplex correctly across page boundaries. If you want each input file to start on a fresh sheet, add a blank page after odd-page-count files before merging.