Compress
Compress PDF Files Online
Reduce PDF file size for email and uploads while keeping text crisp and images clear.
Drag & drop your PDF here
Files are securely processed and automatically deleted.
Large PDFs are a constant source of friction — email attachment limits, slow uploads to portals that cap file size, and mobile connections that choke on a 40MB scan. Most of that size comes from embedded images that were never optimized for screen viewing in the first place.
pdfhubb's compression tool re-encodes embedded images and strips redundant document structure while leaving text vector-sharp. Choose a compression level that matches what you're optimizing for — email, general sharing, or maximum quality — and see the size reduction before you commit.
Need to go the other way, or handle a related step first? Take a look at our Merge PDF tool.
How to Use Compress PDF
- 1
Upload your file
Drag and drop your PDF, or use "Choose Files" to browse your device. Nothing leaves your session until you start processing.
- 2
Configure options
Adjust the settings for this tool — order, ranges, quality, or text — directly in the panel below the file list.
- 3
Compress your PDF
Click the action button to start. Most files finish in a few seconds; larger documents may take a little longer.
- 4
Download your file
Download your smaller PDF straight to your device, or start again with a new file — the original is deleted from our servers shortly after.
Features
- Three compression levels: Extreme, Recommended, and Light
- Live before/after file size comparison
- Text stays crisp — compression targets images, not fonts
- Works on scanned documents as well as native PDFs
Benefits
- Get under email attachment size limits without cropping content
- Faster uploads to portals, forms, and cloud storage
- Most documents shrink 40–70% depending on image content
- No visible quality loss at the recommended setting
Privacy and Security
Your original and compressed files are stored only for the duration of processing and deleted automatically afterward. We never inspect, index, or retain the content of documents you compress.