Compress a PDF file
Reduce the file size of your PDFs without losing quality.
How to Compress a PDF
1. Upload
Upload the PDF file you want to compress.
2. Adjust Settings
Adjust the compression level as needed.
3. Compress & Download
Click the "Compress PDF" button, and your compressed file will be ready for download.
How Our PDF Compressor Works
Our PDF compression tool is engineered to significantly reduce the file size of your documents while maintaining the best possible quality. The process involves a sophisticated analysis of the PDF's structure and content, followed by targeted optimizations.
Intelligent Image Compression
The largest part of a PDF's size often comes from embedded images. Our tool intelligently handles them:
- Re-compression: Images are re-compressed using an optimized JPEG format. You control the compression level with the slider, allowing you to balance file size and image quality.
- Resizing: Images with excessively high resolutions are downscaled to a web-friendly size without affecting the document's appearance.
- Color Space Conversion: Images are converted to the standard RGB color space, which is more efficient for on-screen viewing.
Content Stream Optimization
Beyond images, we also optimize the core content of the PDF:
- Text and Vector Graphics: We preserve all text and vector information, ensuring that your document remains fully searchable and scalable without any loss of quality.
- Stream Consolidation: The tool cleans up and consolidates the internal data streams of the PDF, removing redundant information and unused objects (a process known as "garbage collection").
Finalization
Finally, the newly optimized PDF is saved with deflation enabled, ensuring that all parts of the file are compressed as efficiently as possible. The result is a much smaller, faster-loading PDF that is ideal for sharing via email or publishing on the web.