Compress PDF
Reduce your PDF file size locally while maintaining quality.
Select PDF to Compress
Click or drag and drop your PDF file
How to Compress PDF Securely Online?
Many online tools require you to upload your sensitive PDF files to their servers. Covertfily is different. Our Compress PDF Securely tool works entirely within your browser using advanced client-side technologies. Your documents never leave your device, giving you total peace of mind.
Privacy-First PDF Compression
- Zero Uploads - Total Privacy
- Instant Local Processing
- Adjustable Quality Levels
- MIT Licensed & Open Source
Why Size Matters
Large PDFs are hard to email and slow to load. By compressing your files, you make them easier to share while keeping the text and images clear enough for professional use.
Frequently Asked Questions
Does compressing a PDF reduce its quality?
Some quality loss is necessary to reduce file size, but you can use our slider to find the perfect balance between size and clarity.
Is this really secure?
Yes. Because the compression happens in your browser's memory, no one (including us) can see your files.