Resize PDF

Change the page size of your PDF and scale the content to fit.

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Max file size: 100MB

Resize PDF online, free and secure

Change the page size of a PDF to A4, A3, A5, Letter, or Legal and scale the content to fit. It is the easy fix when a document was made for the wrong paper size or when pages of mixed sizes need to print consistently.

How to resize pdf

  1. Upload your PDF

    Select the PDF whose pages you want to resize.

  2. Choose the size

    Pick the target paper size and whether pages should be portrait, landscape, or keep their own orientation.

  3. Download

    Every page is scaled to fit the new size, centered, and saved as a new PDF.

Why use Kobra PDF to resize pdf

  • Convert between A4, Letter, and more
  • Content is scaled, never cropped
  • Text and links stay intact

Resize PDF: frequently asked questions

How do I convert a Letter PDF to A4?
Upload the PDF, choose A4, and download. Each page is scaled to fit A4 while keeping its proportions, so a little white space may appear at the edges.
Is the text still selectable after resizing?
Yes. The pages are scaled, not converted to images, so text, links, and vector graphics are preserved.
Can I resize pages of mixed sizes?
Yes. Every page is brought to the same paper size, which makes mixed documents print consistently.
Is my PDF uploaded?
No. Resizing happens in your browser and your document never leaves your device.

Kobra PDF: the free online PDF toolkit