Compress PDF
Shrink your PDF, privately in your browser.
How to compress a PDF
- 1
Add your PDF
Drop or select the PDF you want to shrink.
- 2
Pick a level
Light keeps text selectable; stronger levels rasterize for smaller files.
- 3
Compress & download
See the size saved and download, all on your device.
Why compress PDFs in your browser?
Email attachment limits shouldn’t force you to upload a private document to a compression service. PDFMergely shrinks your PDF locally, the smaller file is produced on your device and nothing is sent anywhere.
Frequently asked questions
Is my file uploaded?+
No. Compression runs entirely in your browser. Your PDF is never uploaded.
Will the quality drop?+
Light mode is lossless and keeps text selectable. Stronger levels rasterize pages to images for bigger savings, which reduces sharpness and makes text non-selectable.
How much smaller will it get?+
It depends on the file. Image-heavy and scanned PDFs shrink the most with the stronger levels.
Is it free?+
Yes, compressing PDFs is completely free with no sign-up.