Compress PDF File
Reduce the size of your large PDF files online with our free PDF compressor, while maintaining the best possible quality for easy sharing and storage.
The Ultimate PDF Compressor to Reduce File Size
Drastically reduce the size of your PDF files with our powerful online compressor. Perfect for sharing via email, uploading to the web, or saving disk space, our tool shrinks your PDFs while maintaining the best possible balance of file size and quality. It's fast, free, and secure.
How to Compress a PDF in Seconds
Click the 'Select PDF file' button to upload a document from your computer. You can also drag and drop your file into the box or select a file from Google Drive or Dropbox.
Select the compression level that best suits your needs. Our 'Recommended' setting offers an ideal balance of file size and quality, but you can opt for more or less compression.
Click the 'Compress PDF' button. Our engine will optimize your file in seconds. The compressed PDF will then download automatically to your device, ready to use.
The Best Online PDF Compressor for a Reason
- ✔Smart Image Compression: Our tool intelligently analyzes your PDF, finds large images, and recompresses them to a much smaller size with minimal quality loss. This is the key to effective PDF compression.
- ✔Privacy First, Always: We don’t keep your files. Your PDFs are uploaded over a secure connection (TLS) and are permanently deleted from our servers just a few hours after you're done. Your privacy is guaranteed.
- ✔No Limits, No Cost: Compress as many PDFs as you need, for free. There are no watermarks added to your document and no registration is required to access the full functionality of the tool.
- ✔Works Everywhere You Do: No need to install any software. Our PDF compressor works directly in your web browser on any operating system, including Windows, Mac, Linux, Android, and iOS.
Your PDF Compression Questions Answered
How does PDF compression work?
PDF compression reduces file size by identifying and optimizing various elements. Our tool focuses on the largest part: images. It recompresses images within your PDF to a lower quality (but still visually clear) format, which drastically shrinks the total file size.
Why wasn't my file size reduced much?
If your PDF contains mostly text and vector graphics with few or no images, the file size is already very small and optimized. Our tool provides the most significant compression on PDFs that contain large, high-resolution images, like scans, portfolios, or photo albums.
Is it safe to upload my sensitive documents to compress?
Absolutely. Security is our top priority. We use secure TLS encryption for all file transfers, and our automated system ensures that your files are permanently deleted from our servers a few hours after processing. We never access, share, or view your documents.
What's the maximum file size I can compress?
Our free tool is built to handle large PDF files. While there's a generous limit, if you encounter an issue with a very large file, it may be due to browser upload constraints. For the vast majority of documents, you will have no issues.