Resize troubleshooting: password-protected files, sideways pages, margins, lost form fields

Most Resize 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 resize."

Cause: the file is encrypted. Resize 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 under the error (it goes to the Unlock tool).
2. Enter the file's password there to produce an unlocked copy. Like Resize, unlocking happens entirely in your browser.
3. Bring the unlocked copy back to Resize and run it 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. Resize each part to the same target size.
3. If the file is large because it's a scan, you can also shrink it first with the Compress tool, then resize.

"That doesn't look like a PDF."

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

Fix:

1. If you have images (JPG/PNG), convert them with JPG to PDF first, then resize 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

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: Resize now reads each page's rotation and counter-rotates the content on placement, so it lands upright at the target size.

Fix:

1. Re-run the file through Resize — 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 resize the corrected file.

There are white margins around the content

Cause: by design. Each page is scaled to fit the target with its aspect ratio preserved — content is never stretched or cropped. A4 and US Letter have slightly different shapes, so converting between them always leaves a small, even margin on one axis.

Fix:

1. Nothing to fix — this is the trade-off that guarantees no content is cut off or distorted. The margins are typically a few millimeters and print fine.

Some pages are landscape when I wanted everything portrait

Cause: by design, the output orientation follows each source page's visible shape. A landscape source page becomes a landscape target page — Resize never forces a single orientation on a mixed document.

Fix:

1. If you want every page portrait, rotate the landscape pages in the Pages tool first, download, then run Resize on the corrected file. Note that rotating a landscape page to portrait turns the content sideways — usually keeping each page's natural orientation is what you want for printing.

Form fields or links stopped working after resizing

Cause: Resize rebuilds each page by embedding it as vector content into a new document. Interactive elements — fillable form fields, clickable links, comments — live outside the page content and are not carried over.

Fix:

1. If it's a form you need to fill, fill it first in the Fill tool, then resize the filled result.
2. Or flatten the document with the Flatten tool so entered values become part of the page before resizing.
3. If you need the resized file to be fillable, add fresh fields after resizing instead.

The file didn't get smaller

Cause: Resize changes page dimensions, not file size. The content is the same vector data drawn at a new scale, so the byte size stays roughly the same.

Fix:

1. To shrink the file itself, run it through the Compress tool — lossless mode keeps text intact, image mode gives big wins on scans.

"Couldn't resize 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 resize that.
3. If it's a scan, running it through Make searchable (OCR) first can also produce a rebuilt, well-formed file.

Worried about uploading a sensitive document?

You don't need to be: Resize 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.