Compress PDF
Reduce the file size of your PDF documents. Optimizes images and content to make your PDF smaller while maintaining quality.
About Our PDF Compressor
Reduce PDF file sizes without compromising quality using our free online PDF compressor. Perfect for emailing large documents, uploading to websites, or saving storage space, our tool intelligently compresses images and optimizes your PDF while maintaining readability. All compression happens securely in your browser - no uploads required.
Whether you're compressing scanned documents, image-heavy presentations, or photo albums in PDF format, our compressor gives you full control over the compression level. Adjust image quality and resolution to find the perfect balance between file size and visual quality.
For even smaller files, consider converting your PDF to images or removing unnecessary pages before compression.
How to Compress a PDF
- Upload PDF: Select your PDF file to compress.
- Adjust Quality: Use the "Image Quality" slider - lower quality means smaller file size.
- Set Resolution: Adjust the "Resolution Scale" if needed for additional compression.
- Compress: Click "Compress PDF" to start processing.
- Download: Save your optimized, smaller PDF file.
Key Features
- Adjustable Compression: Control the balance between file size and quality.
- No File Limits: Compress PDFs of any size.
- Secure Processing: All compression happens locally in your browser.
- Free & Unlimited: Compress as many PDFs as you need.
Important Note
This tool works best with scanned documents or PDFs containing many images. For text-heavy, vector-based PDFs, the file size might not decrease significantly or might even increase if converted to images.
Frequently Asked Questions
Will compressing a PDF reduce quality?
It depends on your settings. Our tool lets you control the compression level. Lower quality settings reduce file size more but may affect image clarity. For most documents, medium quality provides a good balance between file size and visual quality.
Is there a file size limit?
No, there's no file size limit. You can compress PDFs of any size. The only limitation is your device's available memory.
Is it safe to compress PDFs online?
Yes! All compression happens locally in your browser. Your PDF files are never uploaded to our servers, ensuring complete privacy and security.
What types of PDFs compress best?
PDFs with many images or scanned documents compress very well. Text-heavy PDFs with vector graphics may not reduce significantly in size, as they're already optimized.