Compress PDF — Free, Private, No Limits
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No file size limit · Processed privately
Compress PDF reduces your file size by re-encoding embedded images and optimizing the document structure, so large PDFs become small enough to email or upload without hitting size limits. Choose between a lighter compression that preserves maximum quality or a stronger setting for the smallest possible file. All processing happens directly in your browser — your document is never sent to a server, which matters for anything containing sensitive information. This is one of the most searched PDF tools worldwide, and it works with reports, scanned documents, presentations exported as PDF, and image-heavy files alike.
How to use Compress PDF
- 1
Upload the PDF file you want to shrink.
- 2
Choose a compression level (Recommended, or Strong for the smallest file).
- 3
Click "Compress PDF" to process it locally.
- 4
Download your smaller PDF and compare the new file size.
Frequently asked questions
Reduction depends on how many images the PDF contains; image-heavy PDFs typically shrink the most.