Compress PDF
Reduce your PDF file size without a server — processed entirely in your browser. No upload. No storage. No cost.
Compression Result
FAQ
Is my PDF uploaded to a server?
No. Everything runs locally in your browser using PDF-lib. Your file never leaves your device.
How does browser-based compression work?
The tool removes redundant metadata, compresses embedded images by re-encoding them at lower quality, removes unused objects, and optimizes the PDF structure. The result depends heavily on the content of your PDF.
Why is the compressed file size similar to the original?
PDFs that contain mostly text or already-compressed images may not reduce significantly. This is a browser-based best-effort tool. For maximum compression, use dedicated tools like Adobe Acrobat or Ghostscript.
Will the quality of my PDF change?
On "Low" level, quality is nearly identical. On "Medium", minor quality reduction in embedded images. On "High", noticeable quality reduction in images for maximum size reduction.
Can I compress a password-protected PDF?
No. Password-protected PDFs cannot be processed. Please remove the password before compressing.