Resize PDF – free online
Change the page size of a PDF to A4, Letter, A3, A5 or any custom size.
How to use Resize PDF
- Open Resize PDF on ToolPlanet AI.
- Choose a PDF from your device, or drag and drop onto the page.
- Pick a page size such as A4, Letter or a custom size.
- Download a PDF with the new page size.
Frequently asked questions
Is Resize PDF free?
Yes. Resize PDF on ToolPlanet AI is completely free, with no sign-up, no watermark and no limit on downloads.
Are my files uploaded when I use Resize PDF?
No. Resize PDF runs entirely inside your web browser, so your file never leaves your device and is not uploaded to any server.
What do I need to use Resize PDF?
Just a web browser such as Chrome, Edge, Safari or Firefox, on a computer or phone. You start with a PDF and get a PDF with the new page size.
Do I need to install software or create an account?
No. Everything works online in your browser. There is nothing to install and no account to create.
More Optimize PDF tools
Edit PDF in the same font
Click any text to change it. Prices, names, dates — edits keep the PDF's own font. Add text, boxes and images, then save.
or drop a PDF here · files stay in your browser