Compress PDF Online Free
Reduce PDF file sizes dramatically for email, web, and storage without losing visual quality. 100% browser-based WebAssembly processing keeps your documents 100% private.
Drag & Drop PDF files here
or click anywhere in this box to select PDF files from your computer
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Compression Settings
Remove author, title & tags
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How to use PDF Compressor
Click the upload button or drag and drop your PDF file into the upload area.
Select your desired compression level: Low, Medium, or High (recommended).
Click 'Compress PDF'. Our tool will instantly reduce the file size, and you can download the compressed PDF.
Why use our PDF Compressor?
Smart Compression Engine
Optimizes images and removes unnecessary fonts/metadata to shrink PDFs dramatically without visible quality loss.
No File Size Limits
Compress large PDF files easily directly in your browser without worrying about artificial upload limits.
100% Secure & Private
All processing happens in your browser. Your files are never uploaded to our servers, guaranteeing absolute privacy and security.
Lightning Fast
Because everything runs locally on your device, processing is instant. No waiting in queues or dealing with slow uploads.
Frequently Asked Questions
Will compressing a PDF ruin its quality?
Not necessarily. Our 'Medium' compression level retains excellent visual quality for reading and printing while significantly reducing file size. 'High' compression is best for emails.
Are my PDF files uploaded to a server?
No! All compression happens locally inside your browser using WebAssembly. We never upload or store your private documents.
Can I compress password-protected PDFs?
Currently, our client-side tool requires the PDF to be unlocked before compression.
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