CodeASystem PDF tools
Convert color PDFs to clean grayscale.
Strip colored backgrounds, reduce printer ink costs, and standardize documents into clean black-and-white or grayscale locally.
PDF to Grayscale
Remove all color and convert color PDF documents to clean black-and-white / grayscale locally.
Processing happens entirely inside your browser. No files are uploaded to any server.
How it works
On-device color transformation. Zero uploads.
The tool uses client-side WebAssembly to render document pages into high-definition bitmaps, computes standard luminance values for every pixel, and re-packages them into an optimized PDF without transmitting a single byte over the web.