Compress PDF

Reduce your PDF file size while maintaining quality

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Drop a PDF file here or click to upload

Select the PDF you want to compress

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Three Levels

Choose from light, medium, or maximum compression to balance quality and size.

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Size Preview

See the estimated compressed size before processing your document.

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Quality Control

Light compression preserves nearly perfect quality with modest size reduction.

How to Compress PDF Files Online

Large PDF files can be difficult to share via email or upload to websites with file size limits. Our PDF compressor reduces file size while maintaining readability and visual quality appropriate for your needs.

Compression Levels Explained

  • Light (~20%): Ideal for documents you need to print. Preserves image quality with minimal compression.
  • Medium (~50%): Best for general sharing. Good balance between file size and visual quality.
  • Maximum (~75%): Best for email attachments and web uploads where small size matters most.

What Gets Compressed

PDF compression primarily targets embedded images, which are often the largest component of PDF files. Images are re-encoded at lower quality and resolution. Text and vector graphics remain unchanged and crisp at any zoom level.

Common Use Cases

Reducing PDFs for email attachments (most providers limit to 25MB), uploading to web forms with size restrictions, storing documents efficiently, and speeding up document sharing across slow connections.