PDF Compress
Shrink PDF file size
Compress a PDF online for free: choose a compression level, optionally convert to grayscale, and download a smaller file. Compression runs on your device—files are never uploaded.
Drop a PDF here
Or choose a file from your device. Up to 25 MB. Compression stays on your device.
Add a PDF to get started.
How to use
- Choose a PDF from your device (or drag it onto the page).
- Pick a compression level and optional grayscale if you want a smaller file.
- Run compression and wait while your browser processes the document.
- Download the smaller PDF when it is ready.
FAQ
Does PDF compression upload my file?
No. Compression runs locally in your browser. Your PDF is not uploaded to ToolBasket.
Will compressing a PDF make text unreadable?
We aim to keep text readable. Stronger compression shrinks the file more and may soften image-heavy pages more than text pages.
What does grayscale do?
Converting to grayscale can further reduce size for color scans and photos when color is not required.
Is there a file size limit?
Limits depend on your browser and device memory. Very large PDFs may fail or run slowly on older hardware.
Is this compress tool free to use?
Yes. You can compress PDFs here without an account.