PDF Compress
No file size limitReduce PDF file size by optimizing structure and removing unused data. 100% free — all processing happens in your browser.
Click or drag a PDF file here
No file size limit — works with any PDF
Frequently Asked Questions
How much can PDF Compress reduce my file size?
It depends on the PDF content. Typical reduction is 10–40%. PDFs already optimized or mainly containing high-quality images may see little reduction.
Does compression reduce image quality?
Our compression focuses on PDF structure optimization (object streams, cross-reference tables) rather than image downsampling, so image quality is preserved.
Is my PDF file uploaded anywhere?
No. The compression happens entirely in your browser. Your file never leaves your device.
What if compression doesn't reduce the file size?
Some PDFs are already well-optimized. In that case, the tool will show 0% reduction — it won't make the file larger. Consider using a specialized PDF compressor for image-heavy PDFs.