01
Why compress PDFs?
Smaller PDF files load faster, save storage space, and are easier to share via email or cloud services.
Free browser-based PDF compressor Private
Compress PDF files instantly
Reduce PDF file size by up to 90% without uploading anything. Fast, private, and completely secure PDF compression in your browser.
Up to 90% smaller
100% private
No installation
P
PDF Compressor
Files stay on your device
Local processing
Drop PDF files here
Drag & drop your files or
PDF
Maximum 50 MB per file
Built for simplicity
Everything you need to compress PDFs
A lightweight PDF compressor designed to be fast, private and easy to use.
02
How it works
Our tool optimizes PDF structure and removes unnecessary data to reduce file size while maintaining quality.
03
Is it private?
Yes. Your PDFs are processed directly inside your browser. They are never uploaded to any server.
How it works
Compress PDFs in three simple steps
1
Upload your PDF
Select one or multiple PDF files from your device.
2
Adjust compression
Choose the compression level that works best for your needs.
3
Download compressed PDF
Download individual files or everything together as a ZIP.
FAQ
Frequently asked questions
Everything you need to know about the PDF compressor.
What is PDF compression? +
PDF compression reduces the file size by optimizing the document structure, removing unnecessary metadata, and compressing images and content.
Is this PDF compressor free? +
Yes. The compressor is completely free to use and does not require an account or payment.
Are my PDFs uploaded to a server? +
No. All compression happens locally in your browser using the PDF-lib library. Your files stay on your device.
What does the compression slider do? +
The compression level controls how much the PDF is optimized. Lower values produce smaller files, while higher values preserve more original quality.
Can I compress multiple PDFs at once? +
Yes. Select multiple PDF files or drag several files into the upload area. You can download each compressed PDF separately or all at once as a ZIP.
What is the maximum file size? +
Each PDF can be up to 50 MB. Because processing happens in your browser, very large files may use more device memory during compression.
Ready to compress your PDFs?
Reduce PDF file size without uploading anywhere. Fast, secure, and completely private.