Print ink saver

Remove broad colored PDF backgrounds and darken text locally to reduce printer ink while keeping pages readable.

Upload a colorful PDFLarge continuous color backgrounds are detected locally.

Background removal strength

Conservative65%Strong

Lower strength protects small colored elements. Higher strength removes more background regions.

All pixel analysis and PDF rebuilding run locally. The output is image-based; selectable text layers are not retained.

100% ブラウザ内ローカル処理