How to Compress a Scanned PDF to Grayscale to Save Space
Learn how to compress scanned PDFs to grayscale and reduce file size to 100KB, 200KB, or 500KB securely and locally in your browser using WebAssembly.
## Why Converting and Compressing Scanned PDFs to Grayscale Saves Space Documents digitized using physical scanners or mobile scanning apps often produce excessively large file sizes. This happens because most capture devices record images using the full 24-bit RGB color spectrum, even when the source document is simply black text on white paper or monochrome official stamps. Converting these image layers to an 8-bit grayscale profile discards unnecessary color channel data without degrading the readability of the text. Large scanned PDF sizes are a common obstacle when submitting documentatio
