No upload, 100% local, no account

Resize PDF pages

Choose a target paper size and orientation, or a percentage scale. All processing happens locally, nothing is sent to a server.

How Resize PDF pages works

PDF Resize scales every page of a PDF to a standard paper size, A4, Letter, Legal, A3 or A5, or to a custom percentage of the original dimensions. pdf-lib recalculates the page dimensions and rescales the page content proportionally, so the result prints or displays correctly at the new size. The entire operation happens in your browser, and your PDF file is never sent to any server.

Native vector content, including text, outlines and vector graphics, stays mathematically precise at any scale, so zooming in on the output reveals no degradation. Raster images embedded in the PDF are scaled along with the page, which can reduce their apparent sharpness if you enlarge significantly beyond their original resolution. This tool is useful when a PDF arrives in a non-standard size that mismatches a print run, or when you want a compact version of a document for a smaller screen or booklet.

Written by Bastien Sulyan

How to use Resize PDF pages, step by step

  1. Drop your PDF into the resize tool.
  2. Choose a preset size such as A4, Letter or A5, or enter a custom percentage.
  3. Review the new dimensions shown before processing.
  4. Click resize and download the scaled PDF.

Common use cases

  • A vendor sent a PDF in a custom page size that does not match your office printer; resize it to A4 before printing.
  • You have an A4 report and want a compact A5 version for reading on a tablet in portrait mode.
  • A scanned archive of legal documents needs to be standardised to Letter size before uploading to a document management system.
  • A presentation slide deck was exported at 16:9 widescreen dimensions; resize to A4 for a printed handout.

Frequently asked questions

Will text become blurry after resizing?

For PDFs with native vector content (text, lines and vector graphics), the output stays crisp at any scale because the content is recalculated mathematically. Embedded raster images scale with the page and may soften if you enlarge well beyond their original pixel density.

Is the page content stretched or cropped when I change the size?

The content is scaled proportionally. If the original aspect ratio differs from the target size, the content is fitted within the new page dimensions and centred, with empty space at the sides or top and bottom, rather than cropped or distorted.

Can I resize only some pages in the document?

The tool applies the chosen size to all pages uniformly. To resize only a subset, extract those pages into a separate file first using the PDF organise tool, resize that file, then merge the parts back.

Is my document uploaded anywhere during this process?

No. pdf-lib runs inside your browser tab. The PDF is loaded into memory on your device, the page dimensions and content matrices are recalculated there, and the output is assembled in memory and written to your downloads folder. The file never leaves your computer.

Does resizing change the file size?

Resizing alone has a modest effect on file size. Scaling down may slightly reduce the size of embedded raster images; scaling up rarely increases it significantly because vector content is described by coordinates, not pixels.