Compress PDF Online Free
Reduce PDF file size online for free. Upload your document, choose a compression level, and download an optimized PDF.
Upload Your PDF
Select your PDF or drag and drop it here.
PDF only • Maximum 20 MB • Up to 25 pages
This tool creates an image-based PDF. It is best for scanned documents. Text selection, searchable text, links, and form fields may be lost.
Choose a PDF to begin.
How to Compress PDF Online
Upload a PDF file, select your preferred compression level, and click Compress PDF. Compare the original and optimized file sizes, then download the result.
FileZentra processes PDFs in your browser. Strong compression usually creates smaller files with lower image detail, while High Quality preserves more detail. Already optimized PDFs may not become smaller.