Select PDF files or drop them here
Click the red + button or click anywhere in the box to upload PDF files (up to 100 MB each).
Compression Level
Select your preferred compression quality. Only one compression level can be active at a time.
Back to Tools
Compress PDF
Reduce PDF file size while optimizing quality & preserving formatting.
Fast, Free & Secure Online Tool
Compress PDF Free Online – Reduce PDF Size
Our tool makes it simple to compress PDF free online, allowing you to optimize your document size by shrinking fonts, compressing images, and removing redundant data without sacrificing readability. We offer different levels of compression depending on your needs, including a standard compression that keeps a perfect balance of quality and size, and extreme compression for very large files.
100% Private & Secure
Files are processed securely and deleted automatically right after conversion.
Zero Signup Required
No credit cards, email registration, or software installation needed. Free forever.
High Accuracy Engine
Retains formatting, layout, tables, fonts, and images with crisp fidelity.
When do you need it?
- •Reducing file sizes to fit strict email attachment limits.
- •Uploading resumes, portfolios, or tax documents to web portals.
- •Optimizing heavy scanned documents for faster loading on mobile devices.
- •Saving local hard drive space by archiving compressed PDFs.
How to use this tool:
- 1Select and upload the PDF file you wish to optimize.
- 2Select your preferred compression level (Recommended, Extreme, or Less).
- 3Click the 'Compress PDF' button to start the optimization process.
- 4Download the compressed PDF file showing the saved space percentages.
Frequently Asked Questions
Will the images in my PDF become blurry?
Our recommended compression level balances quality and file size so text and images stay clean. Extreme compression may lower image resolution slightly to achieve the smallest file size.
Is the compression tool free?
Yes, you can compress files of any size for free with no subscription or signup required.
How much space can I save?
Typically, files are compressed by 30% to 70% depending on the images and metadata inside the original PDF.
Explore Related PDF Tools
Discover more free PDF converter and document productivity tools.