PDF Compressor
Compress your PDF files instantly and securely. Our advanced compression algorithm reduces file size by up to 80% while preserving document quality and readability. No file uploads, no registration required—all processing happens directly in your browser.
Upload PDF File
Drag and drop your file here, or click to browse
Maximum file size: 50MB
Multiple Compression Levels
Choose from three compression presets (low, medium, high) to balance file size reduction with quality preservation for your specific needs.
Quality Preservation
Advanced algorithms maintain text clarity and image fidelity while dramatically reducing file size through intelligent content analysis.
No File Limits
Compress documents of any size with consistent performance, from small invoices to large technical manuals or archived reports.
Frequently Asked Questions
What compression ratio can I expect from this tool?
Compression ratios typically range from 30-80% depending on your PDF content and chosen compression level. Text-heavy documents compress more efficiently than image-intensive ones. Most users achieve 40-60% file size reduction on average documents. You can preview the compression before downloading.
Will compression degrade the quality of my PDF?
Our compression prioritizes quality preservation by using selective image optimization and intelligent content detection. Text clarity remains unaffected, while images are compressed using adaptive algorithms. Choose the 'Low' setting for maximum quality retention or higher settings for aggressive compression with minimal visible degradation.
How does this handle image-heavy PDFs?
Image-heavy PDFs benefit most from compression as images represent the largest portion of file size. Our algorithm intelligently downsamples images based on your selected compression level while maintaining readability. Scanned documents and photo-based PDFs typically achieve 60-75% size reduction.
Will text readability be affected?
Text readability is preserved as our algorithm doesn't compress text content—only images and metadata are optimized. All text remains crisp and searchable after compression. Users consistently report that compressed PDFs are indistinguishable from originals in terms of text clarity.
Can I compress multiple PDFs at once?
While single-file compression is optimized for speed, you can compress multiple documents sequentially using our interface. For batch processing needs, professional users can integrate our API or use advanced workflows. Each compression is processed independently to ensure quality results.
Is my data private when I compress PDFs here?
Absolutely. All compression happens locally in your browser using client-side processing—your PDFs never leave your device. We don't upload, store, or access your files on any server. This ensures complete privacy for sensitive business, legal, or personal documents.