Compress PDF
Optimise your PDF by re-serialising and removing unused objects. Works best on PDFs with redundant structure. For heavy image compression, server-side processing gives better results.
This tool performs a browser-based optimisation pass using pdf-lib. It works well on PDFs with structural redundancy. PDFs that are already optimised or image-heavy may see little reduction in size.
Drag & drop your PDF file here
or click to browse
Supported format: PDF
Your file never leaves your browser
Structural Optimisation
Removes redundant objects and re-packs the PDF structure to reduce file size.
Email-Friendly Output
Smaller PDFs are easier to share by email or upload to web forms.
Processed in Your Browser
Files are optimised locally using pdf-lib. Nothing is uploaded to a server.
How to Compress a PDF
Upload Your PDF
Click the upload area or drag and drop your PDF file.
Click Compress
Press Compress PDF. The file is re-optimised directly in your browser.
Download the Result
Review the size comparison and download your optimised PDF.