PDF Compress
Free online PDF compressor. Reduce PDF file size instantly while preserving content and quality. Compare original and compressed sizes with savings percentage. Local browser processing means no signup, no upload, no registration needed.
Click to upload or drag and drop
Max file size: 10MB
Frequently Asked Questions
How much can PDF files be compressed?
Compression depends on the original PDF structure. Files with many images or embedded fonts typically see larger reductions, while already-optimized PDFs may see smaller savings. The tool shows exact original and compressed sizes along with the percentage saved.
Does compression affect PDF quality or content?
No visible quality loss occurs. The compressor uses object stream optimization and structure cleanup to reduce file size while keeping all text, images, and formatting intact. The visual output remains identical to the original.
Is there a file size limit for compression?
There is no strict limit, but very large PDFs may take longer to process. Since compression happens locally in your browser, the only constraint is your device memory. Most documents compress in just a few seconds.
Is PDF Compress free, and do I need to sign up or upload my files?
PDF Compress is 100% free to use with no signup, no registration, and no usage limits. All processing happens locally in your browser - your files and data never leave your device, so no upload is required and your privacy is fully protected.