Compress PDF Online Free
Upload your file, choose compression level, and reduce PDF size securely.
Select a PDF document
Or drag & drop PDF here
PDFPDF Selected successfully!
filename.pdf
👉 See Estimated Sizes on the right and click Compress!
Compression Level
Extreme Compression
Smallest size, less quality
Recommended
Good quality, good compression
Less Compression
High quality, less compression
How to Compress PDF Files Online
Reduce PDF file size securely without losing quality in 3 easy steps.
1. Upload PDF Document
Select or drag and drop the PDF file you want to compress. Our tool will securely load it directly into your browser.
2. Select Compression Level
Choose between Extreme, Recommended, or Low compression based on your file size requirements and quality needs.
3. Compress & Download
Click ‘Compress PDF Now’. Our smart PDF engine will optimize your file instantly.
Why Use Our PDF Compressor?
Unmatched Security
Unlike other platforms, we never upload your PDFs to a remote server. Everything is compressed locally.
Smart Estimations
Before you even click compress, our tool provides an estimated final size for each compression level.
Frequently Asked Questions
How does the PDF compressor work?
Our tool uses advanced browser-side libraries to open your PDF, optimize its pages and images, and reconstruct the file at a smaller size.
Is it safe to compress confidential PDFs here?
Yes, 100% safe. Because the compression runs directly inside your device’s web browser, your sensitive data is never transmitted across the internet.