How much can I reduce my PDF file size?

Depending on content, you can reduce PDF size by 30% to 90%. PDFs with images compress the most.

Will compression affect the quality of my PDF?

Our smart compression minimizes quality loss. We offer three modes: low compression (best quality), medium, and high compression (smallest size).

Can I compress a PDF that is already compressed?

Yes, but gains will be smaller. Already-optimized PDFs may only reduce by 5–20%.

Why do I need to compress a PDF?

Common reasons include email attachment limits (typically 10–25MB), website upload limits, and saving storage space.

Home›pdf Tools›Compress PDF

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Compress PDF — Reduce File Size Online Free

Shrink PDF Size by Up to 90% Without Quality Loss

Reduce PDF file size significantly for free. Choose from different compression levels to balance between file size and quality. Perfect for emailing documents, uploading to websites, or saving storage space.

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Drop your file here

or click to browse your computer

Choose File

PDF

⚡

Instant

Seconds mein process

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Secure

Files never stored

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100% Free

No account needed

How to Use Compress PDF

Upload your PDF file

Select compression level (low, medium, or high)

Click Compress and wait a few seconds

Download your smaller PDF file

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