N-up troubleshooting: password-protected files, sideways pages, wrong sheet size

Most N-up runs finish in seconds, because everything happens locally in your browser — no upload, no queue. When something does go wrong, it's usually one of the cases below.

"This PDF is password-protected, so it can't be opened to lay out."

Cause: the file is encrypted. N-up has to open and re-embed every page, which an encrypted PDF doesn't allow without the password.

Fix:

1. Follow the Remove the password first → link shown with the error (it goes to the Unlock tool).
2. Enter the file's password there to produce an unlocked copy. Like N-up, unlocking happens entirely in your browser.
3. Bring the unlocked copy back to N-up and run the layout again.

The file is rejected before processing: over 100 MB

Cause: the drop zone caps files at 100 MB to keep your browser responsive. The error tells you the file's actual size.

Fix:

1. Open the Pages tool and split the document into smaller parts.
2. Run N-up on each part.
3. If the parts are bulky scans, you can also shrink each part with the Compress tool once it's under the cap — Compress uses the same 100 MB drop zone, so it can't take the oversized original either.

"That doesn't look like a PDF."

Cause: the dropped file isn't a PDF (N-up accepts .pdf only).

Fix:

1. If you have images (JPG/PNG), convert them with JPG to PDF first, then run N-up on the result.
2. If the file is a Word or other office document, export it to PDF from its native app first.

Pages come out sideways or clipped in their cells

Cause: this was a real bug for PDFs whose pages carry a stored rotation flag (typical for phone scans and faxes), and it has been fixed: N-up now reads each page's rotation and counter-rotates it on placement, so rotated pages land upright in their cells.

Fix:

1. Re-run the file through N-up — current versions handle rotated pages automatically.
2. If a page is still oriented wrong, the rotation is probably baked into the page content itself rather than stored as a flag. Fix the rotation first in the Pages tool, download, then run N-up on the corrected file.

The output sheet is the wrong size or orientation

Cause: by design, the output sheet copies the visible size and orientation of the first page of your source PDF. If page 1 is landscape, every sheet is landscape — even if the rest of the document is portrait.

Fix:

1. If you want a different sheet orientation, reorder or rotate pages in the Pages tool so the first page has the size and orientation you want, then re-run N-up.
2. To change the paper size itself (e.g. to A4 or Letter), run the result through the Resize tool.

"Couldn't lay out this PDF — it may be corrupted or in an unsupported format."

Cause: the file couldn't be parsed — it may be truncated from a bad download, mislabeled (not really a PDF), or use features the parser can't read.

Fix:

1. Re-download or re-export the file from its original source and try again.
2. Open it in another viewer and use "Print → Save as PDF" to produce a clean copy, then run N-up on that.
3. If it's a scan, running it through Make searchable (OCR) first can also produce a rebuilt, well-formed file.

Pages are in an unexpected order on the sheet

Cause: N-up always fills each sheet left to right, then top to bottom (row-major). There is no column-first or right-to-left option.

Fix:

1. If you need a specific arrangement, reorder the pages in the Pages tool before running N-up, so the row-major fill produces the order you want.

Worried about uploading a sensitive document?

You don't need to be: N-up runs 100% in your browser. The PDF is never uploaded — you can open your browser's DevTools network tab and confirm no document bytes leave your device.

Still stuck?

If none of these match what you're seeing, contact support and describe what happens — including the exact error text if there is one.