PDF tools

Compress PDF

Reduce your PDFs' size to email them. Works best with scanned documents or photo-heavy PDFs.

100% private — your files are processed on your device and never uploaded to any server.
This tool needs JavaScript enabled in your browser to work.

How it works

  1. 1

    Upload your PDF

    Drag the file in or tap to choose it.

  2. 2

    Choose the level

    More compression = smaller; lighter = better quality.

  3. 3

    Download the smaller PDF

    We compare before and after.

Reduce the size of your PDFs

PDFs with photos or scanned pages can be too heavy to send. This tool re-compresses the images in the PDF to shrink it and shows how much you saved.

To be honest: it works very well on scans and photos, but a text-only PDF is already optimized, and compressing it may grow the size and remove selectable text. If we detect a lot of text, we warn you first.

Formats: Input: PDF · Output: compressed PDF.

Frequently asked questions

Which PDFs does it work best on?
Scans or photo-heavy PDFs.
Is it useful for text-only PDFs?
Little; it may grow the size. We warn you.
Do I lose quality?
Images are re-compressed; choose 'light' to keep quality.
How much does it reduce?
Depends on the PDF; we show before and after.
Is my file uploaded?
No, it's all local.