PDF Tools
Compress PDF — Reduce PDF File Size Online Free
Compress PDF files for free. Reduce file size by removing unused objects and optimizing the document structure. No sign-up, no file uploads to servers.
FAQ
How does PDF compression work?
Our tool loads your PDF and re-serializes it, removing unused objects, duplicate resources, and optimizing the internal structure. This can significantly reduce file size without affecting visual quality.
Will compression reduce the quality of my PDF?
No. The compression process optimizes the file structure without re-encoding images or text. The visual quality remains identical to the original.
How much can I reduce the file size?
Savings vary depending on the PDF. Files with unused objects, metadata, or redundant resources can see significant reductions. Some well-optimized PDFs may see minimal savings.
Are my files uploaded to a server?
No. All compression happens entirely in your browser. Your PDF files never leave your device.
Is there a file size limit?
No hard limit. Since processing happens in your browser, very large files may take longer depending on your device. Most files compress in seconds.