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Compress PDF Free Online - Reduce File Size Fast

Reduce file size by choosing the compression method that best suits your document. Supports multiple PDFs.

Click to select files or drag and drop

One or more PDF files

Your files never leave your device.

How It Works

1

Upload PDFs

Click or drag and drop one or more PDF files

2

Choose Algorithm

Select Condense (recommended) or Photon (for photo-heavy PDFs)

3

Select Compression Level

Pick Light, Balanced, Aggressive, or Extreme compression

4

Customize & Compress

Optionally enable grayscale or custom settings, then compress

5

Download

Save your compressed PDFs - up to 90% smaller

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Frequently Asked Questions

What's the difference between Condense and Photon?

Condense removes dead-weight, optimizes images, and subsets fonts - best for most PDFs. Photon converts pages to images - ideal for photo-heavy/scanned PDFs but makes text non-selectable.

Which compression level should I use?

Balanced (recommended) offers great size reduction with minimal quality loss. Use Light to preserve maximum quality, Aggressive for smaller files, or Extreme for maximum compression.

Are there file size limits?

No limits! Compress as many PDFs as you need, of any size, completely free.