Compress PDF
Reduce the file size of your PDF documents for easier sharing and storage, all securely within your browser.
Large PDF files can be difficult to share via email, slow to load on websites, and take up unnecessary storage space. Compressing a PDF reduces its file size, making it faster and easier to send, upload, and store. This is especially important for documents containing high-resolution images, which are often the main cause of large file sizes.
- Emailing: Many email services have attachment size limits (e.g., 25MB). Compression helps you stay under these limits.
- Web Performance: Smaller files load faster for users viewing PDFs on your website.
- Storage: Save valuable space on your hard drive or cloud storage.
PDF compression is a complex process that involves several techniques to reduce file size while maintaining visual quality. This can include:
- Image Optimization: Downsampling high-resolution images and applying compression (like JPEG) to them.
- Font Subsetting: Removing unused characters from embedded fonts.
- Removing Redundant Data: Deleting duplicate objects and using more efficient compression algorithms for the file structure.
Our tool uses browser-based libraries to re-save the PDF, which can apply some of these optimizations. For the best possible compression, a dedicated server-side tool is often required, but this tool provides a fast, secure, and convenient alternative for basic needs.
Yes. Unlike many online PDF tools, our converter operates entirely within your web browser. Your files are never uploaded to a server. This means your documents remain completely private and secure on your own computer throughout the compression process.