PDF Mixed Page Size Detector
Detect whether a PDF mixes page sizes or orientations and list which pages belong to each size group. Runs locally in your browser with no uploads.
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Spot mixed layouts before printing or merging
This mixed-page-size detector checks whether a PDF uses more than one page size or orientation and groups the relevant page numbers together. It is especially useful for print troubleshooting, booklet preparation, page numbering overlays and merged PDFs where one odd-sized page can cause layout issues.
Unlike a full inspector, this tool focuses on quickly telling you whether the document is uniform or mixed.
Frequently Asked Questions
Why is a mixed-size PDF a problem?
Mixed sizes or orientations can lead to print scaling issues, uneven margins, booklet problems or unexpected results when adding overlays such as watermarks or page numbers.
Does this show which pages are different?
Yes. It groups pages by rounded size and orientation so you can identify where the mismatched pages are located.
Privacy & Security
Runs entirely in your browser. PDF files are never uploaded.
How to Use
Upload a PDF to detect mixed page sizes and orientations, and see the page numbers in each layout group.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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