Compress PDF
Make your PDF smaller without sending it anywhere. Choose a quality level and the work happens right on your device.
100% private. Your files are processed entirely in your browser and never uploaded.
How to compress a PDF
- Add your PDF by dropping it in the box above or clicking to browse.
- Pick a quality level, then click Compress PDF.
- The smaller file downloads, with the size saving shown.
FAQs about Compress PDF
Are my files uploaded to compress them?
No. The whole job runs inside your browser on your own device. Nothing is sent to a server, so even private documents stay on your computer from start to finish.
How does the compression work?
Each page is redrawn as an optimized image at the quality you choose. This shrinks heavy scans and photo-rich PDFs the most, while keeping the result clear and readable.
Which quality setting should I pick?
High keeps pages crisp with modest savings. Balanced is the best mix for most files. Maximum gives the smallest size, which suits drafts and email attachments.
Why did my file barely shrink?
PDFs that are mostly plain text are already small, so there is little to remove. The biggest savings come from documents built from scans, photos, or large graphics.
Is it safe for the result to be smaller than the original?
Yes. If a setting would not actually reduce the size, the tool keeps your original file instead, so you never end up with a larger or worse copy.