Resize PDF

Resize PDF pages online for free — change the page size to A4, US Letter, Legal, A3, A5 or a custom size, and scale the content to fit, fill or stretch, with optional margins. Text stays sharp and selectable. Runs 100% in your browser.

100% private — your PDF never leaves your browser. Conversion happens on your device; nothing is uploaded.

How to resize a PDF

1. Drop your PDF here, or click to choose it — its current page sizes are shown.
2. Choose the new page size, or pick Custom and enter width and height in mm.
3. Choose how the content fits: Fit keeps everything, Fill crops the edges, Stretch fills the page.
4. Add a margin if you need one, then click “Resize & download”.

What you can use it for

• Convert US Letter PDFs to A4 for printing (or A4 to Letter)
• Make every page in a merged PDF the same size
• Scale a large-format PDF down to A4, or A4 up to A3
• Add white margins around pages for binding or notes

Frequently asked questions

How do I change a PDF from Letter to A4?

Drop the PDF in, choose “A4” as the new page size and keep Fit selected. Each page is scaled to fit A4 without cutting anything off. Click “Resize & download”.

Does resizing a PDF reduce quality?

No. Pages are scaled as vectors rather than turned into images, so text stays sharp and selectable and images keep their resolution.

What's the difference between Fit, Fill and Stretch?

Fit scales each page to fit inside the new size, which can leave white bands. Fill scales it to cover the whole page, cropping the edges. Stretch fills the page exactly, which can distort the content.

Can I resize pages of different sizes?

Yes. Every page is scaled to the new size. With “Match each page”, landscape pages stay landscape and portrait pages stay portrait.

Will this make my PDF file smaller?

Resizing changes the page dimensions, not the file size. To make the file smaller, use our Compress PDF tool.

Is my PDF uploaded?

No. Resizing runs in your browser, so your document never leaves your device.