PDF Compressor PRO
No signup needed Runs in your browser Free forever tier SSL secured
Compress PDF files online — reduce file size for email and web. Free, private, browser-based PDF compression with size comparison.
📄 Click to select a PDF file
Why compress PDFs?
Email servers reject attachments over 25 MB, and bloated PDFs slow down downloads and eat storage. PDF compression removes redundant data and re-encodes the document to shrink its size.
This compressor processes your file entirely in your browser — ideal for contracts, scans, and any document with sensitive content.
What makes PDFs large?
High-resolution scans and embedded images dominate PDF size. Compressing removes metadata redundancy and re-encodes content efficiently. For scans, also try our image tools to shrink the source images first.
How to Use
- Select your PDF file
- The compressor re-encodes it locally
- Compare the before/after size
- Download the compressed version
Features
📉 Smaller FilesRe-encodes to reduce size.
🔒 Private100% client-side processing.
📊 Size CompareSee exactly how much you saved.
⭐ PRO FeaturePart of the Tooly Pro toolkit.
Frequently Asked Questions
How much can I compress a PDF?
Typically 10-60% depending on content — image-heavy PDFs compress most. The tool shows your exact before/after sizes.
Is compression safe for my document?
Yes — text and layout are preserved; only redundant data is removed.
Can I compress a scanned PDF?
Yes, though for scans, compressing the source images first yields better results.