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ZeroToolbox

Compress PDF Online for Free

Make a PDF smaller for free and keep the text sharp. Choose light, recommended or strong compression. The PDF is compressed on your device, never uploaded.

  • Free
  • No sign-up
  • Nothing is uploaded

Related tools

Key Features

  • Makes PDFs smaller by shrinking the photos and scans inside them
  • Text, fonts and drawings stay as they are, so they remain sharp and searchable
  • Three levels: light, recommended and strong
  • Shows how much smaller the file got
  • Password-protected PDFs work, and the smaller copy keeps its password
  • No upload, no sign-up and no watermark

How to Use

  1. 1Drop your PDF onto the box or choose it.
  2. 2Keep Recommended, or pick Strong for the smallest file.
  3. 3Click "Compress PDF".
  4. 4The smaller PDF is saved to your downloads.

Your privacy

Most PDF compressors upload your file to their servers. Here the PDF is compressed inside your browser, so contracts, bank statements and scanned IDs never leave your device.

Frequently Asked Questions

How do I reduce the size of a PDF for free?

Add the PDF above, keep Recommended selected and click Compress PDF. The smaller file downloads a few seconds later, and there is no limit on how often you can use it.

How much smaller will my PDF get?

It depends on what is inside. Scanned documents and PDFs full of photos often shrink by 50% to 90%. PDFs that are mostly text are usually small already and change little.

Will the text become blurry?

No. Only photos and scans are compressed. Text and drawings are kept exactly as they were.

I need the PDF under 100 KB or 200 KB. Can this help?

Yes. Open Compress PDF to 100 KB or 200 KB: it keeps compressing step by step until the file fits under the limit.