FREE · PDF TOOLS
PDF Compressor.
Rewrite and recompress PDF streams locally with QPDF.
How to use PDF Compressor
Choose the PDF, enter settings, generate and inspect the downloaded copy. Your original file is unchanged.
How it works
Rewrite and recompress PDF streams locally with QPDF. Lossless structural compression, not image downsampling. Already optimized PDFs may stay the same size or grow. Password-protected input must be unlocked first. Files are processed on your device; no PDF upload is required.
Example
Choose a local PDF and adjust the displayed settings.
Questions about PDF Compressor
Is PDF Compressor free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
20 MiB combined input; 200 pages for structural operations, 60 seconds for QPDF operations. Lossless structural compression, not image downsampling. Already optimized PDFs may stay the same size or grow. Password-protected input must be unlocked first. Review the downloaded document, especially page order and watermarks.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.