Compress PDF Online
Reduce PDF file size with PrivatePDF’s online PDF compressor. Use its automatic compression setting to try to make your document smaller and easier to share, store, or upload.
Enable JavaScript to use the compressor. Document processing for this tool runs locally in your browser.
How to Compress a PDF
- Select your PDF using the existing file selector, or drag and drop it into the uploader.
- Start compression using the tool’s existing action. Sign in or create an account if prompted. The tool applies its automatic setting; there are no selectable compression levels.
- Wait for processing to finish, then download the resulting PDF from the result screen. Check its file size and review its appearance before using it.
Compress PDF Free Within Your Monthly Allowance
Free users can use up to 10 PDF jobs per month, shared across PrivatePDF tools. Each completed compression uses one job. Sign in or create an account when prompted. This monthly allowance does not include unlimited free compression.
Compress PDF FAQ
How can I compress a PDF online?
Select a PDF, start compression, and sign in if prompted. PrivatePDF processes the document using its automatic setting. Download the resulting PDF and review its size and appearance.
How do I reduce PDF file size?
You can compress PDF files with PrivatePDF to try to shrink PDF documents for sharing or storage. The result depends on the source file. A specific reduction is not guaranteed, and some files may remain the same size or become larger.
Is PrivatePDF’s PDF compressor free?
You can compress PDF online free of charge within the Free plan’s allowance of 10 PDF jobs per month, shared across PrivatePDF tools. An account is required, and each completed compression uses one job. Free compression is not unlimited.
Can I make a PDF smaller without installing software?
Yes. You can use PrivatePDF in your browser without installing desktop software to try to make a PDF smaller. Select the PDF, start processing, and download the result. Whether it becomes smaller depends on the document.
Will compressing a PDF affect its quality?
It can. The current setting renders pages as JPEG images when possible, which may reduce image detail and remove selectable text or interactive elements. Original image quality, fonts, and every page element are not guaranteed to be preserved. Review the downloaded PDF before sharing it.