Resize PDF Pages

Two ways to set the new size

Standard or custom size puts every page onto the same target. Choose A4, US Letter, Legal, A3 or A5 and an orientation — Auto keeps each page's current portrait or landscape shape, or you can force portrait or landscape — or switch to Custom and type an exact width and height in millimetres. This is the mode to use when a document arrived in mixed or odd sizes and you need one consistent paper size for printing. Scale by percentage instead keeps each page's own proportions and simply makes it larger or smaller: 50% halves every dimension, 200% doubles it. A page that was A4 stays A4-shaped, just resized. Use this when you want to shrink oversized pages or enlarge a small one without committing to a named paper size.

How the content is placed

Each original page is embedded as-is and drawn onto the new page at the largest scale that fits inside it, then centered, so the aspect ratio is always preserved. If the target's shape differs from the original — say a landscape page fitted onto portrait A4 — you will see even margins on the sides where the shapes do not match, rather than distortion. Because the page is embedded rather than turned into a picture, text and vector graphics stay sharp and selectable at the new size instead of becoming a flat image. Pages are processed in order and the resized PDF keeps the same number of pages as the original.

What it does and does not do

This changes page geometry, not file weight: resizing is not the same as compressing, so a smaller page size will not always mean a much smaller file, and shrinking pages does not re-encode the images inside them. The tool also does not crop, split, merge or rotate — it only re-lays each existing page onto the size you choose. Password-protected or encrypted PDFs cannot be opened until the protection is removed, and because everything runs on your own device, very large files are limited by your browser's available memory rather than by any server. For a plain change of paper size with the content kept intact, that trade is usually exactly what you want.

Frequently Asked Questions

Does resizing the pages shrink the file size?

Not reliably. This tool changes the page dimensions, not the compression. It re-lays each page onto a new size but does not re-encode the images inside, so a smaller page can still produce a similar file size. It is a page-size tool, not a PDF compressor.

Will my text stay sharp and selectable after resizing?

Yes. Each page is embedded as a real PDF page rather than converted to an image, so text and vector graphics scale cleanly and remain selectable at the new size instead of turning into a flat picture.

What happens if the new size is a different shape than my page?

The content is scaled to the largest size that fits inside the new page and then centered, keeping its original proportions. Where the shapes differ you get even margins rather than a stretched or squashed page.

Is my PDF uploaded to a server?

No. Reading the file, resizing the pages and saving the result all happen in your browser using a local library. Nothing is sent anywhere and closing the tab discards the file, so you can resize private documents safely.

Why will my PDF not open in the tool?

The most common reason is that it is password-protected or encrypted, which must be removed before the pages can be read. A damaged or non-PDF file will also fail to load. Otherwise, very large files may be limited by your device memory since all the work is done locally.