Compress PDF
Shrink file size — lossless or aggressive.
- Files never leave your device
- Free & unlimited
- No upload, no sign-up
Drop a PDF here
or click to browse — files stay on your device
Options
The original file stays untouched. The result panel shows the real before → after — if compression gains nothing, you'll know honestly.
Done
How to Compress PDF
- 01
Add the PDF — its size is measured locally.
- 02
Pick a mode: lossless rewrite, or rebuild as optimized images for the biggest savings.
- 03
Download the smaller PDF — the saved percentage is shown before you do.
Compress PDF — questions
How much smaller will my PDF get?
It depends on the file. Image-heavy and scanned PDFs often shrink by 50–90% with the strong mode. Text-only files are already small — the lossless mode may only trim a few percent, or nothing at all.
What does the lossless mode change?
Nothing visible. The file is re-packed with object streams — same pages, same quality, same selectable text. Some already-optimized files barely change.
What does the strong mode change?
Each page is rendered and re-encoded as a JPEG, then rebuilt into a new PDF. Files get dramatically smaller, but text becomes part of the image — it can no longer be selected or searched. Use it for sharing, archiving and scans.
Why did my file get bigger?
Some PDFs are already perfectly optimized. If compression gains nothing, the tool tells you honestly instead of pretending — you keep your original.