PDF Tools
Resize PDF
Resize all pages in a PDF to A4 or US Letter. Pages are scaled to fit the target size with proportions maintained — nothing is cropped. Runs in your browser; the file is never uploaded.
Frequently asked questions
- Does my file get uploaded?
- No. Resizing a PDF happens entirely in your browser using pdf-lib. The file never reaches a server. Close the tab and the file is gone.
- Will any content be cropped?
- No. Pages are scaled proportionally to fit inside the target page size. If the original proportions differ from A4 or Letter, whitespace is added around the content to fill the new page. Nothing is cut off.
- What happens to landscape pages?
- Landscape pages stay landscape. A landscape page is resized to landscape A4 (297 × 210 mm) or landscape Letter (11 × 8.5 in), scaled to fit, keeping the content in the correct orientation.
- What is A4 vs US Letter?
- A4 (210 × 297 mm) is the standard paper size in Europe, Australia, and most of the world. US Letter (8.5 × 11 inches) is the standard in the United States and Canada. They are very close in size but not identical — a PDF from the US may have slightly different margins when printed on European A4 paper.
Guide
How to resize PDF pages to A4 or US Letter
Resize PDF pages to A4 or US Letter without cropping or distorting the content. This guide explains when page size matters, what the two standards mean, and how to convert without uploading your file.
Read the guide →