Reduce PDF file size without losing quality. Shrink large documents for email, web upload, or storage. Fast, secure, and no signup required.
Compress PDF NowReduce your PDF file size in three easy steps
Drag and drop your PDF file or click to browse. We show the current file size immediately.
Select compression level: Low for best quality, Medium for balanced, or High for maximum reduction.
Click compress and download your smaller PDF. See exactly how much space you saved.
Choose the right balance between file size and quality
Best quality preservation. Ideal for documents with important images or graphics that need to stay sharp.
Balanced quality and size. Perfect for most documents, emails, and general sharing purposes.
Maximum size reduction. Great for text-heavy documents or when file size is critical.
Powerful tools to optimize your PDF documents
Our algorithm analyzes your PDF content and optimizes each element—images, fonts, and metadata—for best results.
Text remains perfectly readable at any compression level. Images are optimized without visible quality loss.
See before and after file sizes, plus the percentage reduction. Know exactly how much space you're saving.
Embedded images are recompressed using advanced algorithms. Reduces image data while maintaining visual quality.
Compress multiple PDFs at once. Pro users can process entire folders with consistent compression settings.
All compression happens in your browser. Files never leave your device or get uploaded to any server.
Compress PDFs in seconds, not minutes. Even large documents are processed quickly using optimized algorithms.
Compress PDFs on any device—desktop, tablet, or phone. No software to download or install.
The fastest way to reduce PDF file size online
Compress unlimited PDFs without any cost. No hidden fees, no premium features locked behind paywalls.
Start compressing immediately. No account creation, email verification, or personal data required.
Browser-based processing ensures your files stay private. Nothing gets uploaded to external servers.
Smart algorithms deliver optimal compression. Get the smallest file size with the best possible quality.
Common scenarios where compression saves the day
Stay under email size limits. Compress PDFs to fit within the typical 25MB attachment limit for most providers.
Faster page loads and better SEO. Compress PDFs before uploading to your website or CMS.
Maximize your storage space. Compressed PDFs use less of your Dropbox, Google Drive, or OneDrive quota.
Faster downloads on mobile networks. Compressed files transfer quickly even on slower connections.
Many online forms have file size limits. Compress before submitting job applications or government forms.
Store more documents in less space. Compress archived PDFs to reduce long-term storage costs.
More tools to optimize your PDF documents
Everything you need to know about PDF compression
Depending on content, you can reduce file size by 40-80%. PDFs with many images see the most dramatic reductions.
Text remains perfectly sharp. Images may be slightly optimized but remain clear for viewing and printing at normal sizes.
Completely free for files up to 10MB. No watermarks, no signup, no hidden fees. Pro users can process larger files.
Medium works best for most uses. Use Low for important photos/graphics, High when file size is critical.
Yes, scanned documents often compress very well since they're essentially images. Expect significant size reductions.
All processing happens in your browser. Files never leave your device, ensuring complete privacy and security.
If you have the password, you can unlock and compress. The compressed file can keep or remove password protection.
Yes, compression preserves all interactive elements including hyperlinks, bookmarks, and form fields.
Most PDFs compress in under 10 seconds. Larger files with many pages may take slightly longer.
Free users can compress one file at a time. Pro users have access to batch compression for multiple files.
Reduce PDF file size in seconds while maintaining quality. Free, secure, and no signup required.
Compress PDF Now