PDF black-to-white converter
PDF Black-to-White Converter is an efficient Web application that quickly converts color PDF files to black and white/grayscale versions. The application is developed based on the Python FastAPI framework, providing a concise and intuitive user interface and powerful conversion functions.
- ** PDF conversion **: Quickly convert color PDF to black and white/grayscale version - ** Multiple grayscale levels **: Support 1-4 grayscale levels to meet the needs of different scenarios - Gear 1: Pure black and white (binary) - Gear 2: black and white + 50% gray - Gear 3: black and white + 33%/66% gray - Gear 4: black and white + 25%/50%/75% gray - ** Real-time preview **: Support pre-and-conversion comparison preview to ensure that the conversion effect meets expectations - ** Paginated browsing **: Multi-page PDF supports page-turning viewing, making it easy to check the conversion quality of each page - ** Zoom control **: Preview pictures support zoom function, making viewing details clearer - ** Responsive design **: Perfectly supports desktop and mobile device access - ** Safe and reliable **: File type verification, size limit, automatic cleaning of temporary files
