Advanced PDF Compressor
Compress your PDF files instantly with our free, powerful online tool. Reduce file size while maintaining document quality.
Drop your PDF files here or click to browse
Supports: PDF | No file size limits | Complete privacy
Medium: Balanced compression with good quality. Recommended for most documents.
Processing PDFs
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Files Processed
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Original Size
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Compressed Size
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Space Saved
How to Use
1
Upload PDFs
Click the upload area or drag and drop your PDF files. You can upload multiple PDFs at once for batch processing.
2
Adjust Settings
Choose your compression level, image optimization settings, and decide whether to remove metadata.
3
Compress
Click "Compress PDFs" and watch your files get optimized. The tool processes each file efficiently.
4
Download
Download your compressed PDFs individually or all at once. See detailed statistics on space saved.
Frequently Asked Questions
Yes, absolutely! All PDF compression happens entirely in your browser. Your files never leave your device or get uploaded to any server. This ensures complete privacy and security of your documents.
No, there are no file size limits! Since compression happens in your browser, you can compress PDFs of any size. However, very large files may take longer to process depending on your device's capabilities.
The tool uses advanced PDF processing libraries to reduce file sizes through multiple techniques: image optimization (reducing image quality and resolution), removing unnecessary metadata, optimizing page content, and recompressing the PDF structure. These methods significantly reduce file size while maintaining readability.
Yes! You can select multiple PDF files at once using the file picker or drag and drop multiple files. Each PDF will be compressed individually with your chosen settings, and you can download them all together.
Low: Minimal compression, highest quality - best for documents where every detail matters.
Medium: Balanced compression - recommended for most documents, emails, and general use.
High: Maximum compression - best for archiving or when file size is critical.
For documents with many images, image optimization will have the biggest impact.
Medium: Balanced compression - recommended for most documents, emails, and general use.
High: Maximum compression - best for archiving or when file size is critical.
For documents with many images, image optimization will have the biggest impact.
Compression involves a trade-off between file size and quality. Text remains sharp at all compression levels. Images are the main area affected - higher compression reduces image quality. At medium compression with 70% image quality, most users won't notice significant quality loss while achieving substantial file size reduction.
Metadata includes information like author name, creation date, modification date, software used, and other document properties. Removing it can slightly reduce file size and increase privacy. It's recommended to remove metadata if you're sharing the PDF publicly or don't need to preserve this information.
Yes! This PDF compression tool is completely free to use with no registration required. You can compress as many PDFs as you want without any restrictions, watermarks, or hidden costs.
Currently, this tool works best with unencrypted PDFs. Password-protected or encrypted PDFs may not compress properly. For best results, remove password protection before compressing, then reapply it to the compressed file if needed.