Page Dimensions

A diagnostic tool that reads every page in your PDF and reports its exact dimensions, orientation, standard size name, aspect ratio, area, and rotation. Useful for catching mixed-size pages before printing or for documenting the properties of a PDF you received.

How It Works

1. Upload a PDF file. Analysis starts automatically -- no button to press.
2. A summary panel shows total pages, number of unique page sizes, and whether the document has mixed sizes.
3. Browse the full results table with per-page details.
4. Switch display units between Points, Inches, Millimeters, or Pixels.
5. Click Export to CSV to save the data.

Reported Fields

Column	Description
Page #	Sequential page number
Dimensions	Width x Height in the selected unit
Standard Size	Matched name (A4, Letter, etc.) or "Custom"
Orientation	Portrait or Landscape
Aspect Ratio	Width-to-height ratio as a decimal
Area	Page area in the selected unit squared
Rotation	Page rotation in degrees

Features

• Automatic detection of standard paper sizes (A3, A4, A5, Letter, Legal, Tabloid, and more)
• Mixed-size document warning with a breakdown of which sizes appear and how many pages use each
• Unit conversion between points, inches, millimeters, and pixels (at 96 PPI)
• CSV export for use in spreadsheets or documentation systems

Use Cases

• Verifying all pages are A4 before submitting a document to a print shop
• Diagnosing why a merged PDF prints with unexpected margins on certain pages
• Documenting the page layout of a large PDF archive for metadata records
• Identifying rotated pages that need correction

Tips

• If the summary shows "Mixed Sizes," use the Fix Page Size tool to standardize before printing.
• The rotation field helps identify pages that display correctly but have a non-zero rotation attribute, which can cause issues in some workflows.

Related Tools

• Fix Page Size -- standardize pages after identifying mixed sizes
• Compress PDF -- optimize the PDF after fixing page issues
• Rotate PDF -- correct rotated pages