Compress a PDF

Make big PDFs small enough to email or upload. Lossless mode keeps everything sharp; strong mode shrinks scanned documents the most.

Private: your file stays on your device
or drop files here — they stay on your device

How to compress a PDF

  1. Choose your PDF.
  2. Pick Lossless or Strong compression.
  3. Download the smaller file and see how much you saved.

Frequently asked questions

Which mode should I pick?

Use Lossless first. If the file is a scan or full of photos and still too big, use Strong — it turns pages into compressed images, so text can no longer be selected.

How small will my PDF get?

Scanned PDFs often shrink by 50–90% in Strong mode. Text-only PDFs are usually already small.

Are my files uploaded to a server?

No. PDFCop works entirely inside your browser. Your files are processed on your own phone or computer and are never sent to us or anyone else.

Is it really free?

Yes. There is no sign-up, no daily limit and no watermark on your file. The site is supported by ads.

Related tools