Compress PDF Online Free
Optimize and shrink PDF files instantly. 100% Client-Side Secure.
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Before Optimization
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Ready to Download
100% Privacy Guaranteed
Optimization happens locally on your browser. No document is ever transmitted to a server.
How to Reduce PDF Size
Frequently Asked Questions
How does this compression work?
We perform "Lossless Optimization." We remove unused objects, clean metadata, and rebuild the file structure to be more efficient.
Will my text become blurry?
No. Unlike aggressive image compression, our method keeps text and vector graphics crisp, perfect for official documents.
How much size can I save?
It depends on the source. Files from MS Word or Scanners often shrink by 20-50%. Already optimized files may see smaller gains.
Is this tool secure?
Yes. It is 100% Client-Side. Your sensitive bank statements or ID proofs never leave your computer.
Can I compress scanned PDFs?
Yes, but the reduction might be limited since scanned PDFs are essentially large images. We optimize the container, not the image pixels.
Is there a file size limit?
The limit is defined by your device's RAM. We comfortably handle files up to 100MB directly in the browser.
Does it work on Mobile?
Yes, OTechy's compressor is fully responsive and works on Android/iOS Chrome and Safari.
Do I need to install software?
No. This is a web-based tool. You don't need Adobe Acrobat or any plugins.
Why did the file size increase?
Rarely, if a file is already highly optimized, rebuilding the structure might add a few bytes. In 99% of cases, it reduces size.
Can I compress password-protected files?
No. You must remove the password protection before the tool can access and optimize the internal structure.
Is it free?
Yes, completely free with no watermarks and no hidden costs.
Does it remove my data?
It removes "invisible" metadata (like author name, creation software) which saves space and improves privacy.