PDF tools
Compress PDF Files Online
Reduce PDF file size without unnecessary hassle. Upload your PDF, compress it, and download the smaller file.
Files are processed in your browser and are not uploaded to our servers.
How It Works
- 01
Upload
Choose a PDF from your device.
- 02
Choose a level
Pick Maximum, Balanced or Higher Quality.
- 03
Download
Save the smaller PDF.
When a smaller PDF helps
- Email attachments with size limits
- Online forms and application portals
- Sharing scanned documents
- Saving storage space
How PDF compression works
Fylix first tries to optimise your PDF's internal structure without changing its content. It also tries re-encoding each page as an optimised image, then keeps whichever version is smallest.
Image-based compression works best for scanned documents and image-heavy PDFs. When it's used, text in the result may no longer be selectable. If your PDF is already efficient, we'll tell you rather than give you a bigger file.
Frequently Asked Questions
It depends entirely on the file. Scanned and image-heavy PDFs often shrink a lot; text-only PDFs may barely change. You'll see the exact result before downloading.
Maximum compression can make pages look softer. Choose Higher Quality to keep pages sharper with smaller savings.
No. Every Fylix PDF tool runs in your browser, so your files stay on your device and are never sent to our servers.
Use Unlock PDF first (you'll need the password), then upload the unlocked file here.
Yes. The PDF tools are free to use and don't require an account.