Reduce PDF file size by compressing images and optimizing PDF structure. Works best with image-heavy documents and scanned PDFs.
Reduce PDF size by optimizing page rendering. Best results with scanned documents and image-heavy PDFs.
Compressing...
Original Size
0 MB
Compressed Size
0 MB
Reduction
0%
Every page is re-rendered and saved as a JPEG image. Low keeps 90 percent JPEG quality at native resolution, Medium uses 60 percent quality at 85 percent resolution, and High uses 35 percent quality at 70 percent resolution. Higher levels trade sharpness for a much smaller file.
Text-based PDFs and files that are already optimized often see little to no reduction, because the main savings come from recompressing images. The tool works best on scanned documents and image-heavy files, and it shows a notice when the output is no smaller than the original.
Yes. Each page becomes a full-page JPEG image inside the new PDF, so text is rasterized and can no longer be selected or searched. If you need selectable text, use the Low level for maximum quality or a dedicated optimization tool.
Files up to 25 MB are accepted. Because processing happens in your browser, very large documents also depend on your device memory; a progress bar tracks each page as it is compressed.
No. The entire pipeline runs in your browser using PDF.js and pdf-lib, which are loaded locally from this site. Your document never leaves your device, and the compressed copy is generated and downloaded locally.