Resize PDF
Change the page size of your PDF to A4, Letter, Legal and more — content scales to fit.
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How to Change the Page Size of a PDF
A PDF made for one country often prints badly in another. Send a US Letter document to a colleague in Europe and their printer complains about the paper size; send an A4 file to the US and the bottom of every page risks being cut off. Scanned receipts, phone screenshots, and exported slides come in all sorts of odd dimensions too. Resize PDF converts every page to a standard paper size in one step, scaling the content so it fits perfectly — directly in your browser.
- 1
Upload your PDF
We show the current size of your pages and a preview of the first one.
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Choose a paper size
Pick A4, Letter, Legal, A3, A5, or Tabloid, and the orientation you need.
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Fit or keep scale
Scale content to fit the new page, or keep it at its original size, centered.
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Download
Every page is resized consistently and your new PDF downloads instantly.
No distortion
Content is scaled proportionally and centered, so nothing is stretched or squashed.
Text stays sharp
Pages are resized as vector content — text remains crisp, selectable, and searchable.
Private processing
Resizing happens on your device. Your PDF is never uploaded to a server.
A4 vs. Letter: the international mismatch
Most of the world uses A4 paper, while the United States, Canada, and parts of Latin America use Letter. The two look similar but differ by several millimeters in each direction — enough for printers to rescale pages unpredictably, shift margins, or clip headers and footers. Converting a document to the recipient's standard size before sending it avoids those surprises and makes your files look professionally prepared.
Getting documents ready to print
Print shops and office printers work best when every page in a file has the same size. A PDF assembled from scans, screenshots, and exports can contain pages of a dozen different sizes, which leads to inconsistent margins and wasted paper. Resizing everything to one size — say Legal for contracts or A3 for posters and plans — produces a uniform document that prints cleanly from the first page to the last.
Fit to page vs. keeping the original scale
Fit to page enlarges or shrinks the content proportionally so it uses as much of the new page as possible, without distortion. It's the right choice for almost every document. Keep original scale places the content at exactly 100% in the middle of the new page — ideal for drawings, forms, and labels that must print at a precise physical size.
Quality you don't have to worry about
Many converters turn pages into images to resize them, which blurs text and bloats files. PDFDoco resizes the page itself and transforms the original vector content, so text stays razor-sharp and selectable, and links and form fields move with the content to their new positions.
Pro tip: need room for binding or notes rather than a different paper size? Use our Add Margins tool to add white space around each page instead.
Frequently Asked Questions
Will resizing stretch my content?
No. With Fit to page, content is scaled by the same amount in both directions and centered, so proportions are always preserved. If the new page has a different shape, you'll see white space on two sides instead of distortion.
What does Auto orientation do?
Auto keeps each page's own orientation: portrait pages become portrait A4 (or Letter, and so on) and landscape pages become landscape. Choose Portrait or Landscape to force every page to the same orientation.
When should I use Keep original scale?
Use it when content must print at exactly its original size — for example technical drawings, forms, or labels. The content is centered on the new page without scaling; if the new page is smaller, the edges outside it are cut off.
Does resizing affect quality?
No. Pages are not converted to images. Text and vector graphics stay perfectly sharp at any size, and images keep their original resolution.
Will links and form fields still work?
Yes. Links, comments, and form fields are moved and scaled together with the page content, so they stay in the right place.
What is the difference between A4 and Letter?
A4 (210 × 297 mm) is the standard in most of the world, while Letter (8.5 × 11 inches) is standard in the United States and Canada. A4 is slightly taller and narrower, so converting between them usually adds a thin white band.