Compress PDF files directly in your browser. Reduce file sizes by 50-90% for easier sharing and storage. Choose between lossless cleanup or maximum raster compression. All processing stays on your device.
Email attachment limits, slow uploads, bloated storage — oversized PDFs cause headaches everywhere. This compressor reduces PDF file sizes by re-encoding embedded images at lower quality while keeping text and vector elements crisp. Most documents shrink by 40-70%, easily getting under the typical 10-25MB email attachment limit. Processing happens locally in your browser.
Why Compress PDF Files?
Large PDFs create real problems:
- Email limits: Most email services cap attachments at 10-25MB
- Slow uploads: Large files take forever on slow connections
- Storage costs: Cloud storage charges by the gigabyte
- Mobile viewing: Large PDFs are slow to load on phones
Our compressor solves these problems while keeping your documents readable and professional.
Key Benefits
Significant Size Reduction
Our compression can reduce PDF sizes by 50-90% depending on content. Image-heavy PDFs see the biggest savings through intelligent re-encoding.
Never-Worse Guarantee
If our compression doesn't make your file smaller, we keep your original. You'll never get a file larger than what you started with.
Two Compression Modes
Lossless mode cleans metadata without quality loss. Raster mode re-encodes images for maximum compression when file size matters most.
Completely Private
All processing happens locally in your browser. Your PDFs are never uploaded — they stay securely on your device.
How to Compress PDF Files
- Upload your PDF file(s).
- Choose Lossless or adjust the quality slider.
- Click Compress.
- Download your smaller PDF(s).
Features
Lossless or raster
Control image compression
Compress multiple PDFs
Always keep smaller file
See document info
Get all files at once
Compression Modes Explained
| Mode | How It Works | Best For |
|---|---|---|
| Lossless | Cleans metadata, optimizes structure | Text documents ✓ |
| Raster (Quality slider) | Re-renders pages as optimized images | Image-heavy PDFs ✓ |
Who Uses This Tool?
Email Senders
Compress PDFs to fit email attachment limits
Archivists
Reduce storage costs for document archives
Business Users
Share smaller PDFs with clients and colleagues
Students
Compress assignments and reports for submission