Reduce PDF file size by up to 90% while maintaining quality. Best free PDF compressor - no signup, no watermark, your files never leave your device.
Reduce PDF file size by up to 90%
Choose compression level (low, medium, high)
Maintain readable document quality
See exact size reduction percentage
Compress multiple PDFs at once
Fast client-side processing - no upload wait
100% private - files never leave your device
No signup, registration, or email required
No watermarks added to compressed PDFs
Works on all devices - Windows, Mac, iOS, Android
Supports all PDF versions and sizes
Unlimited compressions - no daily limits
Compress PDFs to fit within email attachment limits (Gmail: 25MB, Outlook: 20MB). Send large documents without file size errors.
Reduce file size for quicker uploads to job portals, government websites, university applications, and cloud storage.
Compress archived documents to save disk space and reduce cloud storage costs. Perfect for businesses with large PDF archives.
Make PDFs smaller for faster downloads when sharing via WhatsApp, Slack, Discord, or direct links.
Reduce PDF size for faster loading when embedding PDFs on websites or offering downloads to visitors.
Create smaller PDFs that load quickly on mobile devices with limited bandwidth or storage.
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The fastest, most secure way to compress PDF files online. No Adobe Acrobat needed.
Your PDF files are compressed entirely in your browser. Nothing is uploaded to any server - your documents stay on your device.
Compress PDFs in seconds with client-side processing. No waiting for server uploads or downloads - instant results.
Use on any device with a modern browser - Windows, Mac, Linux, iPhone, iPad, or Android. No software installation needed.
Compress as many PDFs as you need with no daily limits. No watermarks or branding added to your files.
Reduce PDF size in 4 simple steps - no software installation required
Click the upload area or drag and drop your PDF file. Your file stays 100% private - nothing is uploaded to any server. All compression happens in your browser.
Select Low (best quality, 10-30% reduction), Medium (balanced, 30-60% reduction), or High (smallest size, 50-90% reduction). For email attachments, High usually works best.
Press the "Compress PDF" button to instantly compress your file. Processing happens in seconds using your browser's JavaScript engine - no waiting for server uploads.
Download your compressed PDF instantly. The tool shows you exactly how much smaller the file is (e.g., "Reduced by 75%"). Your original file remains unchanged.
Choose the right compression level for your needs
| Compression Level | Size Reduction | Quality | Best For |
|---|---|---|---|
| Low | 10-30% | Excellent | Professional documents, presentations with images |
| Medium | 30-60% | Good | General documents, balanced quality and size |
| High | 50-90% | Acceptable | Email attachments, web uploads, archiving |
See why our free online tool is the best choice for compressing PDFs
| Feature | Edesy (Free) | Adobe Acrobat | iLovePDF |
|---|---|---|---|
| Price | Free | $22.99/month | Free (limited) |
| Files Uploaded to Server | No - 100% private | Sometimes (cloud) | Yes |
| Daily Limit | Unlimited | Unlimited | 2 files/hour free |
| Signup Required | No | Yes | No (limited features) |
| Installation Required | No | Yes (large download) | No |
| Works Offline | Yes (after page load) | Yes | No |
| Processing Speed | Instant | Fast | Varies (upload/download) |
More free tools to work with your PDFs
Need to compress a PDF? Our free online PDF compressor reduces file size by up to 90% while maintaining quality. Whether you need to shrink a PDF for email, faster uploads, or storage savings, this tool makes it easy.
Large PDF files can be a problem. Here's why you might need to reduce PDF size:
Adobe Acrobat Pro costs $22.99/month just to compress PDFs. Our free PDF compressor works directly in your browser - no software to download, no account to create, and no subscription fees. Just upload your PDF and compress it instantly.
Our PDF compressor reduces file size by optimizing images, removing duplicate resources, eliminating unnecessary metadata, and restructuring the file for efficiency. Text always stays sharp and readable. The compression level you choose determines how aggressively images are optimized.
If your compressed PDF is still too large, consider using our Remove PDF Pages tool to delete unnecessary pages like blank pages, cover pages, or sections you don't need. Removing image-heavy pages can significantly reduce file size beyond what compression alone can achieve.
Unlike other online PDF tools that upload your files to their servers, our compressor processes everything locally in your browser. Your PDF files never leave your device, making this the most secure way to compress PDFs online. This is especially important when working with confidential documents.
Read our detailed guides on PDF compression: