Resize PDF Page Size Online

Convert every page to A4, Letter and more — content scales to fit.

Select Or Drag & Drop PDF Here

Need a PDF in A4 for printing, or US Letter for submission? PDF Boy's Resize PDF tool scales every page to the paper size you choose, keeping the original proportions (or stretching to fill, if you prefer).

How to use Resize PDF Pages

  1. Select your PDF.
  2. Pick the target paper size, orientation and scaling.
  3. Click Resize PDF and download the new document.

Frequently Asked Questions

How do I change a PDF to A4 size?

Upload the PDF, choose A4 as the paper size and click Resize PDF. Each page is scaled to fit an A4 sheet.

Will resizing distort my pages?

Not with the default “Fit” scaling — proportions are kept and any leftover space is left blank.

Can I convert A4 to US Letter?

Yes. Pick US Letter as the paper size.

Is the Resize PDF Pages tool free and unlimited?

Yes. PDF Boy's Resize PDF Pages tool is completely free, with no signup, no watermark and no limit on how many files you process.

Are my files uploaded to a server?

No. Everything happens locally in your browser, so your files never leave your device.

More PDF Tools

Crop PDF Trim margins from every page of a PDF. Rotate PDF Turn sideways or upside-down pages the right way up. PDF Size Reducer Compress a PDF to an exact target size in KB or MB. All PDF Tools Browse every free PDF tool on PDF Boy.