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Resize PDF

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Fit PDF pages to A4, Letter or a custom paper size without cropping or stretching the content.

How to change the page size of a PDF

  1. Choose or drop the PDF you want to resize.
  2. Choose All pages, or Choose pages and enter page numbers such as 1-3, 7.
  3. Pick A4, Letter or Custom. For Custom, enter the width and height in millimetres.
  4. Choose portrait or landscape.
  5. Press Resize PDF, then download the resized PDF.

Options

Pages to resize
All pages resizes the whole document. Choose pages takes numbers and ranges; pages you leave out keep their original size and position in the file.
Paper size
A4 is 210 × 297 mm and US Letter is 215.9 × 279.4 mm. Custom accepts any width and height from 10 to 2,000 mm.
Orientation
Portrait puts the shorter side across the page; landscape puts the longer side across.
Undo, Redo and Reset resize options
Step back through changes to pages, paper and orientation, or return to the defaults.

What you get

  • One PDF with the selected pages set to the new paper size, saved with (resized) added to the file name.
  • Each page is scaled evenly to fit and centred. Where the shapes differ, the leftover space is white margin.
  • Text stays selectable. Unselected pages keep their size and order.
  • Accessibility tags may no longer match the page content.

Limits

  • One PDF at a time, and you can choose up to 10,000 pages in one run.
  • Custom sides must be between 10 and 2,000 mm.
  • PDFs with form fields, digital signatures, links, comments, annotations, XFA forms or layers cannot be resized. Flatten or remove them first.
  • Password-protected PDFs must be unlocked and opened again before the check can run.
  • Resize does not crop. To cut away margins, use Crop PDF.

Check the result

Open the saved PDF and check the page size in your reader's document properties. Compare a resized page with its source at the same zoom: the content should be centred and in proportion.

Questions

Can I resize a PDF without uploading it?

Yes. Pages are resized in your browser and the file is not uploaded.

How do I change a PDF from Letter to A4?

Choose A4 and portrait, leave All pages selected and press Resize PDF. Each Letter page is scaled to fit inside A4 and centred.

Will resizing stretch or crop my pages?

No. Content is scaled by the same amount in both directions, so its proportions stay the same, and nothing is cut off.

Can I resize only some pages?

Yes. Choose pages and enter numbers or ranges, for example 2, 5-8. Other pages keep their original size.

Why is the resize button disabled for my PDF?

The PDF has, or might have, form fields, signatures, links, comments, annotations or layers, which resizing cannot keep. The message by the button names what was found.

Can small pages be made larger?

Yes. A page smaller than the chosen size is scaled up to fit, and a larger one is scaled down. Either way the content stays in proportion.

What custom sizes can I use?

Any width and height from 10 to 2,000 mm, with decimals allowed. The orientation setting then decides which side runs across the page.

Does resizing make images blurry?

No. Pages are scaled as PDF content, not turned into images, so text stays selectable and images keep their original resolution.

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