Compress PDF
Reduce PDF file size by cleaning up data and unused objects. 100% private.
Drag & drop a PDF here or click to browse
We compress files by removing unused data and optimizing the internal structure.
How to compress a PDF online
- Upload your PDF by dragging it into the dropzone or clicking to browse
- Adjust the slider and wait a moment
- Click "Compress & Download" to save the reduced PDF
- Compare the before/after file sizes to see how much you saved
Is it safe?
Yes. Your PDF is processed entirely in your browser using pdf-lib. No file is uploaded to any server. Your data stays private and secure on your device.
Frequently asked questions
How much can I reduce a PDF file size?
It depends on the document. PDFs exported from design software often contain metadata and hidden objects. We clean these up to reduce file size.
Will compression affect text quality?
No. Compression only affects redundant objects and structure. Text, vectors, and page layout remain completely unchanged.
Is there a file size limit?
There's no artificial limit. The only constraint is your device's available memory. We recommend PDFs under 100MB for best performance.