How much can I reduce a PDF file size?

Depending on content, PDFredo can reduce file sizes by 20% to 80%. PDFs with many images typically see the greatest reduction.

Will compression reduce PDF quality?

At low compression, quality is nearly identical to the original. Higher compression settings reduce image resolution to achieve smaller file sizes.

Why should I compress a PDF?

Smaller PDFs are easier to email, upload, and share. Compression is especially useful for PDFs with many photos or scanned pages.

Is there a limit to how many PDFs I can compress?

No, you can compress as many PDFs as you like for free. No account needed.

Can I compress a scanned PDF?

Yes. Scanned PDFs (image-based) often compress well. For maximum text extraction, combine compression with our OCR tool.

Does compression change the PDF content?

Only image quality is affected. All text, fonts, and document structure remain identical.

Compress PDF

Shrink file size, keep quality

After upload you can choose: Maximum · Recommended · Light

Image quality may be reducedCompression settings may reduce image quality. Preview the result before replacing the original file.

Files are processed on servers in the EU and automatically deleted after 35 minutes. We do not store, share, or analyze your documents. You are responsible for ensuring you have the right to process uploaded files.

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Processed on EU servers. Files are automatically deleted within 35 minutes. No tracking, no analysis.

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HTTPS upload, auto-deletion

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01

Upload your PDF

Click "Select File" or drag and drop your PDF into the upload area.

02

Choose compression level

Select a compression level: Light (best quality), Recommended (balanced), or Maximum (smallest file size).

03

Compress the PDF

Click "Compress PDF". Our engine will reduce the file size while preserving readability.

04

Download compressed file

See the size reduction percentage and download your optimized PDF.

PDF/A Converter

Convert to archive-safe PDF/A format

Flatten PDF

Lock forms, annotations and layers permanently into the page