OPTIMIZE · FREE ONLINE TOOL

Compress PDF

Reduce large scanned PDFs with adjustable image quality.

PDF

Drop your file here

.pdf · PDF · 50 MB per file

Document preview

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See your changes before downloading

A fresh start for your file

Choose a file to get started. It stays on your device.

Changes preview

Your files stay on your device.

Your files. Your device.No file uploads. No account or API key needed.

A FEW SIMPLE STEPS

How to compress a scanned PDF

  1. 01

    Choose the PDF you want to make smaller.

  2. 02

    Adjust Image quality and Page resolution, then zoom into the preview to check readability.

  3. 03

    Click Compress PDF and compare the download size with your original.

Before you download

Image compression rebuilds pages as images. Text selection, forms, links and annotations are flattened. Keep your original; a smaller result is not guaranteed.

Will compression always make my PDF smaller?

No. Already optimized files can stay the same size or grow. This tool rebuilds pages as images, so text selection, interactive forms and links are flattened. Keep the original and check the preview at a readable zoom.

Is Compress PDF free?

Yes. There is no subscription, account or paid API key. Your browser processes the files on your device. Larger documents need more memory and time.

Where are my files processed?

In this tab. Selected document files are not sent to a conversion server. Closing the tab clears the working session; downloaded files remain on your device.

GET MORE FROM THIS TOOL

Know what to check before sharing.