Change PDF Page Size
Resize every page of a PDF to A4, US Letter, Legal, A3, A5, Tabloid or a custom size — fit within the new page or stretch to fill it. Runs entirely in your browser; your file is never uploaded.
Input
Result
Upload a PDF, choose a page size, and press Resize PDF. The result is built in your browser — download it when you're ready.
Guides
Resize every page of a PDF to a different paper size — A4, US Letter, Legal, A3, A5, Tabloid, or a custom width and height — without leaving your browser.
How to use it
- Upload a PDF.
- Choose a target page size, or pick Custom and enter a width and height in points (72 pt = 1 inch).
- Choose an orientation: match each page's own orientation, or force every page to portrait or landscape.
- Choose how content fills the new page:
- Fit within page — scales each page's content down or up to fit inside the new size, adding white space on the shorter axis if the aspect ratio changes. Nothing is cropped.
- Stretch to fill — scales width and height independently to fill the new page exactly. Simple content (a document made of text and shapes) still looks correct; a page with a very different aspect ratio will look visibly stretched.
- Press Resize PDF, then download the result.
Free in your browser, private by default
The PDF is resized entirely on your device with pdf-lib — your file is never uploaded. Each page's content is re-embedded as vector data, not rasterized, so text stays sharp and selectable at any size.
Does this change the content, or just the page dimensions?
Both, depending on the mode you pick. Changing only the page dimensions without scaling the content would leave the content cropped or floating in empty space, so this tool always scales the content to match — "fit" scales proportionally (preserving the original aspect ratio), "stretch" scales each axis independently to fill the new page exactly.
What about a page's rotation flag?
A small number of PDFs (often scanned documents) mark a page as rotated via metadata rather than storing the content already right-side-up. This tool doesn't currently read that flag, so a rotated source page's content is resized as stored, not as it appears when a PDF viewer applies the rotation. Everyday PDFs — Word/Office exports, browser "Print to PDF", most scans — don't rely on this flag and are unaffected.
I need to crop a PDF's margins instead
Use Crop PDF to trim a percentage of margin off each side without changing the overall page size.