Black & White Image Converter

This tool converts color raster images to grayscale using perceptual luminance weighting. It accepts common formats (PNG, JPEG) and outputs a grayscale version with an option to blend in color for subtle effects. Conceptually, RGB channels are mapped to a single luminance channel to reflect human vision, then optionally gamma-corrected and blended with the original image. The workflow benefits designers, photographers, and archivists who need consistent black-and-white assets for print, branding, or documentation without heavy software. Core features include a straightforward upload-to-output process, a standard grayscale calculation, and output in widely used formats. Advanced options allow partial desaturation through grayscale_mix and gamma adjustments to tailor contrast and detail retention. Use cases include product photos, logos, scanned documents, or archival imagery that must be stored or published in grayscale while preserving essential details and transparency when present. The tool differentiates itself by combining reliable perceptual conversion with optional blending, batch processing, and metadata-preserving outputs for efficient production pipelines.