PDF Size Viewer

Upload a PDF and instantly see the page size, format and orientation of every page.

Your files stay in your browser - no upload to our server.

Drop PDF here or select file

PDF files only · Max 250 MB per file

About this tool

Instantly identify PDF page sizes

Want to know if your PDF is in A4 format? Whether all pages are the same size? Or if portrait and landscape are mixed? This tool shows you all dimensions at a glance - per page, in millimeters, centimeters or inches. Standard formats like A4, A3, A5, Letter or Legal are automatically detected. You get a warning for mixed sizes or orientations. And because many users are actually looking for the file size: we show that too - with a note if the file is too large for email attachments.

How to use

How it works

1

Upload PDF

Drag your PDF into the upload area or select it via the file dialog.

2

Check results

You'll instantly see the detected format, orientation and exact dimensions of every page. Deviations are highlighted.

3

Choose unit

Switch between millimeters, centimeters and inches - whatever you need.

Without a tool

Find PDF size yourself

You don't need a tool to check the page size of a PDF. Here are four ways to do it yourself.

Adobe Acrobat Reader

Open the PDF, then File > Properties > Description. The page size is listed in millimeters under "Page Size". Alternatively: press Ctrl+D.

In the browser (Chrome, Edge)

Open the PDF in your browser and press Ctrl+P. The print dialog shows the paper size. The actual page size may be found under "More settings" depending on your browser.

macOS Preview

Open the PDF in Preview, then Tools > Show Inspector (Cmd+I). Under "General" you'll find the page size in points and centimeters.

Windows Explorer

Right-click the PDF file > Properties > Details. Page size and page count are listed there - but only for the first page.

Tip: In many PDF programs, the page size is automatically displayed when you move the cursor to the bottom-left corner of the document.

FAQ

Questions about PDF sizes

Page size describes the physical dimensions of a page (e.g. 210 x 297 mm for A4). File size is the storage space the entire PDF takes up on disk (e.g. 2.4 MB). A single-page PDF can take more space than one with 50 pages - depending on content (images, vectors, fonts).
No. All analysis takes place in your browser. Your PDF never leaves your computer.
Custom means the page size doesn't match any standard format (A4, A3, Letter etc.). This often happens with scanned documents, exported presentations or manually cropped PDFs.
Mixed page sizes often occur when documents from different sources were merged. Example: a cover page in landscape, the rest in portrait. Or an attached plan in A3 format within an A4 document.