Resize PDF Pages Online – Change PDF Page Size (A4, Letter, Custom)
PDFmuto resizes the pages of a PDF in your browser, scaling content to fit a new page size. Nothing is uploaded to a server.
- No file limits
- No registration
- Free forever
- PDFs never leave your browser
Drop your PDF here
Supported format: PDF
Content is scaled to fit the new page without clipping. Choose A4, Letter, Legal, or another size.
How to Resize PDF Pages
Upload PDF
Drop the PDF whose page size you want to change onto the page.
Choose New Page Size
Pick A4, Letter, Legal, A5, or A3 from the list.
Scale Content to Fit
Content is scaled to the new page automatically — no clipping, no empty half-pages.
Download Resized PDF
Click Resize pages and download the converted document.
Convert Between A4 and Letter
Page-size mismatches are a constant office problem: an A4 document sent to a Letter-printing office distorts or clips when printed.
Resizing normalizes the whole file to one standard, so printing and sharing behave predictably everywhere.
Change Page Dimensions Without Losing Content
| Sizes | A4, Letter, Legal, A5, A3 |
|---|---|
| Scaling | Content fits the new page, nothing clipped |
| Output | Resized PDF |
| Registration | Not required |
| Upload | None, processed on your device |
Your PDFs never leave your browser
All processing happens locally on your device. Nothing is uploaded to a server, stored, or tracked.
Frequently asked questions
Which page sizes are available?
A4, Letter, Legal, A5, and A3 — the common office and print sizes.
Will my content be cut off?
No. Content is scaled down to fit the new page, so nothing is clipped. If the new page is larger, content keeps its relative size.
Does resizing affect image quality?
No. Pages are scaled as vector content, so text stays sharp at any size.
Learn more about PDFs
Read practical guides for working with PDFs without uploading your files. Browse all guides →