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Change Page Size

Convert PDF pages to A4 size—or Letter, Legal, and other standard paper sizes. Upload a PDF and every page is resized with content scaled to fit or fill the new page. This changes page dimensions, not the file format. Processing runs on your device.

Stays private

Processed on this device

Clear progress

Real stages, no fake percent

Honest output

Limits and warnings included

PDF

On-device processing

PDF output

25 MB max

How it works

1
Upload
Choose and validate your file
2
Process
Review options and run the tool
3
Download
Check the result and save it

Keep working

All PDF tools

Add Watermark to PDF

Add text, logos, stamps, or tiled watermarks to every page in your PDF.

On your device
No signup
Stays on your device

Sign PDF

Place a signature image on selected PDF pages on your device.

On your device
No signup
Stays on your device

Fill PDF Form

Complete supported PDF form fields and export the filled document.

On your device
No signup
Stays on your device

Crop PDF

Adjust page crop boxes and download the cropped PDF.

On your device
No signup
Stays on your device

Helpful answers

Is PDF Page Size Changer free?

Yes. It is free to use and you do not need to sign in or create an account.

Is my data private?

See the privacy note on this page. Many tools run on your device; some heavier file tools may use secure temporary processing when required.

Can I use PDF Page Size Changer on mobile?

Yes. Open this page on your phone or tablet, enter your inputs, and use the on-screen controls.