Compress PDF
Compress PDF files to reduce size fast. Shrink and optimise your PDF with adjustable compression levels. Free, secure, no sign-up and no watermark.
🔒 This tool processes your file on our secure server. Files are sent over an encrypted connection.
Reduce PDF file size.
or click to choose
Compress PDF files to shrink their size in seconds without losing the layout you need. Our online PDF compressor recompresses images and content so you can email bulky attachments, upload to forms with strict limits, or save storage space. Choose a compression level to balance smaller size against visual quality, then download your optimized PDF. It's free, fast, secure, and needs no sign-up or software install.
How to Compress PDF
- Upload the PDF you want to shrink.
- Pick how aggressively to compress, balancing size against quality.
- Process the file and download your smaller PDF.
Frequently asked questions
Is this PDF compressor free to use?
Yes. You can compress as many PDFs as you like online for free, with no account, no installation, and no watermark added to your finished file.
What happens to my file after compression?
Your PDF is uploaded over an encrypted connection and processed on a secure server. Files are not kept after your download is ready, so nothing lingers afterward.
Will compressing reduce the quality of my PDF?
It can, slightly. Higher compression makes files smaller but softens images, while a lighter level keeps text crisp and photos sharp. Pick the level that fits your needs.
How small can my PDF get?
It depends on the content. Image-heavy or scanned PDFs often shrink by 50–80%, while files that are mostly text see smaller gains since the text is already compact.
Can I compress a confidential PDF safely?
Yes. Uploads use a secure, encrypted connection and processed files are not retained on the server, so your document isn't stored or shared after compression.
