Compress PDF

Reduce the file size of a PDF so it's easy to email or upload. Adjust the quality, then download — all in your browser.

Choose a PDF or drag & drop

How to compress a PDF

  1. Select the PDF you want to shrink.
  2. Choose a quality level — lower means a smaller file.
  3. Click Compress PDF and download the result.

How it works

File Format Converter re-renders each page and re-encodes images at your chosen quality using pdf.js, then rebuilds a fresh PDF locally. This works best for scanned documents and image-heavy files. Text-only PDFs are already small and may not shrink much.

How much smaller will my PDF get?
Scanned PDFs often shrink 50-90%.
Is the PDF uploaded anywhere?
No, it stays in your browser.

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