PDF Page Size Analyzer
Check every page for A4, Letter, Legal, custom dimensions and orientation, and download a CSV report.
Choose a PDF or drop it here
| Page | Paper size | Orientation | Points | Millimeters | Inches |
|---|
Find mixed paper sizes before printing or merging
This analyzer reads each PDF page's media box and reports width, height, orientation and the nearest common paper size. It is useful for spotting one Letter page inside an A4 document, landscape pages, or unusual custom dimensions.
FAQ
Does this change my PDF?
No. This tool only reads page dimensions and creates an optional CSV report.
Which paper sizes can it recognize?
Common ISO A-series sizes plus Letter, Legal, Tabloid and Executive are recognized when dimensions are close to their standard values.
Continue with a related check
More questions about this tool
Does this automatically convert Letter to A4?
No. This tool reports dimensions; use suitable page-editing software when conversion is required.
Can it tell me whether a scan is readable?
No. Use PDF Scan Quality Checker for visual warnings and manual review for legibility.
Will mixed pages always be rejected?
No. Only the destination's documented file rules determine whether mixing sizes is allowed.
Spot mixed paper sizes before printing or uploading
A PDF may look consistent in a viewer while one or more pages are actually Letter-sized or landscape within an otherwise A4 portrait document. Such differences can cause scaling and margins to change when printed or combined.
This analyzer reads page geometry from the PDF and reports sizes in points, millimeters and inches together with its nearest recognized paper format. It does not alter the original pages.
Step-by-step workflow
- Open a PDF and run Analyze Page Sizes.
- Check whether all pages have the same named size and orientation, especially if your destination requires A4 portrait throughout.
- Look at dimensions in millimeters for pages marked Custom or where a paper-size label seems unexpected.
- Download the CSV report to keep a per-page checklist. Use Crop PDF, Rotate PDF or the original source application if you need to fix a mismatch.
Common problems and what to check
| What you notice | What to check |
|---|---|
| One Letter page in an A4 file | Return to the source document or inspect crop/size options before printing. |
| A landscape page appears among portrait pages | Check whether the content is deliberately landscape before rotating. |
| A page is marked Custom | Compare the measured dimensions to the portal instructions rather than assuming Custom means invalid. |
Important limitation
The analyzer reads PDF page dimensions, not the size of visible text or the physical resolution of a scan. Cropped and rotated PDF pages can also display differently from their underlying media boxes.