Resize PDF
Resize PDF is a free browser tool that changes the page size of your document. Pick A4, Letter, A3 or Legal, choose how content is placed (fit with margins, centered as-is, or stretched to fill), and apply to all pages or a selection.

Drop PDF files here or click to browse
Files stay in your burrow: everything is processed on your device, never uploaded.
How to use this tool
- 1Drop a PDF into the tool.
- 2Pick the target page size: A4, Letter, A3 or Legal.
- 3Choose the placement mode: fit scales content proportionally with margins, center keeps the original scale centered, stretch fills the whole page.
- 4Choose all pages or a custom range, click Apply and download.
FAQ
What is the difference between fit, center and stretch?
Fit scales each page proportionally so nothing is cut, adding margins where the ratios differ. Center keeps the original scale and centers the content, which can clip edges if the page is too small. Stretch scales width and height independently to fill the page exactly, which distorts content when the ratios differ.
Does resizing keep the text selectable?
Yes. Pages are re-placed as vector content, not screenshots, so text stays sharp and selectable at any scale. Links and form fields on resized pages are not carried over; flatten or fill forms before resizing if you rely on them.
Can I make only some pages A4?
Yes. Use the custom range to resize selected pages; the rest keep their original size. Note that viewers will show a document with mixed page sizes.