Free PDF Compressor Online
Reduce your PDF file size while maintaining quality. Fast, free, and secure compression.
Drag & drop PDF file or click to upload
Supports .pdf files
Why Compress Your PDFs?
High Compression
Reduce PDF file size by up to 90% while maintaining document quality and readability.
Preserve Quality
Smart compression algorithms maintain text clarity and image quality in your PDFs.
Fast Processing
Compress PDFs in seconds. Upload, compress, and download your optimized file instantly.
Secure & Private
Files are encrypted during transfer and automatically deleted after compression. Your privacy is protected.
How to Compress PDFs
Upload PDF
Easily drag & drop or select your PDF file using the upload area. Free: 10MB, link active for 7 days. Pro: 50MB, links last forever.
Compress File
Your file is securely compressed using optimized algorithms that balance size and quality.
Download Result
The compressed PDF downloads automatically. See the size reduction and share easily.
Expected Compression Results
| PDF Type | Typical Reduction | Example |
|---|---|---|
| Scanned Documents | 60-80% | 50MB → 10-20MB |
| Image-Heavy PDFs | 50-70% | 30MB → 9-15MB |
| Presentations (from PowerPoint) | 40-60% | 20MB → 8-12MB |
| Text-Only Documents | 20-40% | 5MB → 3-4MB |
| Already Optimized PDFs | 5-15% | Minimal change |
Results vary based on original file content and optimization.
When to Compress vs. Other Solutions
Compress When:
- PDF is too large for email (over 25MB)
- Uploading to a system with file size limits
- Sending to someone with slow internet
- Archiving many large documents
Share as Link When:
- Compression isn't enough reduction
- You need to track if recipient viewed it
- File may need updates later
- Sharing with many people
Common PDF Compression Uses
Email Attachments
Most email services limit attachments to 25MB. Compress to fit within limits.
Job Applications
Many application portals limit uploads to 5-10MB. Compress your resume or portfolio.
Website Uploads
Smaller PDFs load faster on websites, improving user experience.
Cloud Storage
Save space in Dropbox, Google Drive, or OneDrive by compressing before upload.
Mobile Sharing
Compressed PDFs download faster on mobile networks and use less data.
Archiving Documents
Reduce storage costs by compressing historical documents and records.
LinkyHost vs. Other Compression Methods
| Method | Free | Quality | Speed | Share Link |
|---|---|---|---|---|
| LinkyHost | High | Fast | ||
| Adobe Acrobat | $15/mo | High | Medium | — |
| Mac Preview | Low-Med | Fast | — | |
| Windows Print to PDF | Varies | Slow | — |
Related Guides
Frequently Asked Questions
Is the PDF compressor really free?
Yes! Our PDF compressor is completely free with no limits on file size or number of compressions. No subscription or payment required.
How much can you compress a PDF?
Compression varies by file content, but typically reduces file size by 40-90% while maintaining quality. PDFs with many images compress more than text-only documents.
Will compression reduce PDF quality?
Our smart compression maintains visual quality while reducing file size. Text remains crisp and images stay clear. We use optimized settings to balance size and quality.
Are my files secure?
Yes. All files are encrypted during upload and processing, then automatically deleted from our servers after compression. We never access or share your documents.
What file size limits are there?
Free accounts can compress PDFs up to 10MB (link active for 7 days). Pro accounts support up to 50MB with links that last forever.