What Size Is My PDF?

Instantly check your PDF's page size, dimensions, orientation, and page count. Free, private, and no sign-up required.

Select a PDF file or drag and drop it here

Your PDF stays in your browser.

Your PDF page size and properties will appear here after you select a file.

How to check a PDF page size

Select one PDF above or drag it into the box. The checker reads each page’s dimensions and shows the measurements in millimeters and inches, the closest supported paper size, orientation, page count, file size, and any mixed-page warnings.

Understanding PDF page dimensions

Every PDF page has a width and height. For example, A4 is 210 × 297 mm and US Letter is 8.5 × 11 inches. A PDF can contain portrait and landscape pages, different standard sizes, or custom dimensions, so the checker examines pages individually instead of assuming the whole document uses one size.

Browser-only PDF checking

The bundled PDF.js library analyzes page metadata locally in your browser. Your selected file is not uploaded for processing, and the tool does not render page previews or extract document text. Learn more about how the checker works or read the Privacy Policy.