Optimize PDF for Web
Optimize your PDFs for the web and improve your SEO. 10x faster loading, better Google ranking, optimal UX. Free.
Quick Answer
FreeConversion compresses your PDFs up to 90% of their original size while preserving visual quality, using 100% local processing via WebAssembly. No uploads, no file limits.
Drop your PDF here
or click to select a file
Latest update : February 13, 2026
How does it work?
Select your PDF file.
Choose your desired compression level.
Download the optimized file instantly.
How does PDF compression work?
PDF compression uses WebAssembly technology to process your files directly in the browser. The algorithm reduces embedded image weight, removes unnecessary metadata, and optimizes the internal PDF structure.
Compression Quality Levels
Light
20-40% reduction. Ideal for documents with few images. Quality nearly identical to original.
Medium
40-60% reduction. Good balance between size and quality. Recommended for most uses.
Maximum
60-90% reduction. Perfect for email or messaging attachments. Images are more compressed.
Privacy & Security
Your files never leave your device. Processing happens entirely in your browser using WebAssembly. This is the ideal solution for sensitive documents.
Why compress your PDFs?
Up to 90% size reduction
Total privacy (local processing)
Visual quality preserved
Free without file limits
Frequently Asked Questions
Can I use FreeConversion for professional documents?
Absolutely! FreeConversion is perfect for professional documents. Since all processing happens locally in your browser, your confidential documents remain 100% private.
How does PDF compression work?
Our tool uses advanced algorithms to optimize images, remove unnecessary metadata, and reorganize the internal PDF structure for minimal size while preserving visual quality.
Will the compressed PDF be compatible everywhere?
Yes, compressed PDFs remain in standard PDF format and open in all PDF readers (Adobe Reader, browsers, mobile apps, etc.).
Can I compress scanned PDFs?
Yes! Scanned PDFs are often very large and benefit greatly from compression. You can typically reduce their size by 50-80%.