Check and understand PDF page dimensions quickly online. View standard PDF sizes and identify the exact page dimensions of your document.
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Change PDF Page Size resizes every page in a document to a standard size like A4, Letter, or Legal, or to a custom width and height you specify — useful when a document was created in one regional page standard but needs to be printed or submitted in another. Upload your PDF, choose the target size, and the content scales to fit the new dimensions while keeping everything on the page proportional. This solves the common problem of a document looking cut off or oddly scaled when printed on paper that doesn't match its original page size.
Drop your PDF into the box. It loads in your browser and stays on your device throughout.
Pick the target size — A4, Letter, or custom dimensions — and the content scales proportionally to fit.
Check the preview so nothing looks squashed or cropped at the new size.
Download the resized PDF, now matching the paper or portal spec you're aiming for.
Standard paper sizes or exact custom dimensions, with proportional scaling that keeps content intact.
Switch between A4, Letter, Legal, and other standard sizes.
Set an exact width and height for non-standard needs.
Content scales proportionally so nothing gets cut off.
Resizing happens in your browser — your file is never uploaded.
Resize unlimited PDFs at no cost.
You can choose from standard sizes like A4, Letter, and Legal, or set your own custom width and height.
No. The content scales proportionally to fit the new page size without stretching or distortion.
Yes, this tool is completely free with no limit on how many documents you resize.
This often happens when a document created for one regional paper standard (like Letter) is printed on another (like A4).
No. The resizing process runs entirely in your browser, so your file stays private.
PDF Page Size Checker