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SlimFile.app

Change a PDF's page size

Rebuild every page at one paper size — A4, Letter or another — so a mixed document prints consistently.

Choose your PDFs

up to 1 at a time.

PDFMax 25 MB each

Scaled to fit, never stretched

Each page is scaled to fit the new size and centred, so nothing is distorted and nothing is cut off. Where the old and new shapes differ, the difference becomes an even margin.

Landscape pages stay landscape: the target size is turned on its side to match, which is what you want when a document mixes orientations.

How to use Change PDF Page Size

  1. Add your PDF

    Drop a PDF file onto the page, or click to choose one. Up to 25 MB.

  2. Choose your options

    Adjust any settings the tool offers, or keep the defaults — they are chosen to be right for most files.

  3. Download the result

    Save the result straight to your device.

Why use SlimFile.app for this

  • Scaled, never stretched

    Each page is fitted and centred, so nothing is distorted and nothing is cut off.

  • Landscape stays landscape

    A sideways page gets a sideways target size rather than being squeezed upright.

  • Free, no sign-up

    No account, no email address, no trial that runs out.

  • No watermark

    What you download is clean — nothing added to your file.

  • Deleted within an hour

    Uploads and results are removed automatically about an hour after processing. We never look inside them.

Questions

How do I convert a PDF from Letter to A4?
Add the PDF, choose A4 and download. Every page is rebuilt at A4, scaled to fit with an even margin where the shapes differ.
Will the text get blurry?
No. Text and vector graphics are drawn at the new size rather than resampled, so they stay sharp at any zoom.

Related tools

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Pull specific pages out of a PDF, or break it into several files.

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Merge PDF

Combine multiple PDFs into one, in the order you choose.

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