Compress PDF Offline

Reduce size of PDF offline in seconds, right in your browser. Make a PDF smaller while keeping text sharp. Files never leave your device. No sign-up, no watermark.

or drop a file here

Files stay on your device. Nothing is uploaded.

How to compress your PDF

  1. 1

    Add your PDF.

  2. 2

    Choose a compression level or a target size.

  3. 3

    Click Compress and download the smaller PDF.

Works offline

Once this page has loaded, the tool keeps working without an internet connection: all processing happens on your device. Turn on airplane mode and try it.

Private by design

Your file is processed by your own browser, in memory. It is never uploaded, stored or seen by anyone, and the page’s security policy blocks it from sending data to other servers.

Frequently asked questions

How do I reduce PDF file size free offline?

Add your PDF. Choose a compression level or a target size. Click Compress and download the smaller PDF.

How to reduce PDF file size free offline?

Add the PDF, choose a compression level (or a target size), then click Compress PDF. The result shows the before and after size.

How to reduce PDF file size offline free?

Yes. There is no sign-up, no watermark, no daily limit and no paid tier hiding the useful settings. Because your device does the work, it costs us almost nothing to run.

Will compression make my PDF blurry?

Text and vector graphics are never touched, so they stay sharp. Only images are recompressed. Light keeps images close to the original; Strong is visibly softer on photos.

Why didn’t my PDF get much smaller?

PDFs made from text (exported from Word, for example) contain few images, so there is little to compress. Large savings come from scans and photos.

How small does a PDF need to be for email?

Gmail and Yahoo accept attachments up to 25 MB, Outlook.com up to 20 MB. Staying under 10 MB is safest because some company mail servers set lower limits.

Related tools