Compress PDF
Reduce the size of your PDF files, optimize PDF and decrease PDF without losing quality. Our tool is the best online PDF compressor.
Waiting for Ghostscript to initialize...
Drag and drop PDF to compress
or click to select from your computer
WASM Technology
Powerful compression directly in the browser using WebAssembly.
Privacy
Your files never leave your computer. 100% local processing.
Ghostscript
Uses the same compression engine as professional Ghostscript software.
💡 About PDF Compressor
Our online PDF compressor is a powerful and free online tool that allows you to compress PDF and reduce PDF size of your documents without compromising visual quality. Using WebAssembly PDF (WASM) technology and the same compression engine as Ghostscript PDF, we ensure 100% local processing in your browser, meaning your documents are never sent to the cloud, ensuring total PDF privacy and security.
✅ How to Use the PDF Compressor?
- Upload your PDF: Click "Select PDF" or drag and drop your PDF file in the indicated area.
- Choose Compression Level: Select the desired compression level (e.g., Low, Medium, High). Higher levels result in smaller files but may have a small quality loss.
- Compress: Click the "Compress PDF" button. The process will be completed in seconds, depending on file size.
- Download: Download your compressed PDF.
❓ Frequently Asked Questions (FAQ)
- Are my files safe? Yes, 100% safe. All processing is done in your browser, and your files are never sent to our servers.
- What is the difference between compression levels? Higher compression levels apply more aggressive algorithms to reduce file size, which may result in a small quality loss (usually imperceptible for most uses).
- Can I compress password-protected PDFs? No, the tool cannot process password-protected PDFs. You will need to remove protection before compressing.
✨ Best Practices when Compressing PDF
- For documents with a lot of text and few images, compression is usually very efficient with little quality loss.
- If the PDF contains many high-resolution images, try different compression levels to find the ideal balance between size and quality.
- Ideal for emails or platforms with size limits. Allows compressing without perceptible quality loss.
❗ Important Warnings
Compression effectiveness may vary depending on the original content of the PDF. Files that are already highly optimized or contain many vector elements may not have a significant size reduction. Make sure your browser is up to date.