Original
Black and white
Frequently asked questions
How is the black and white effect calculated?
Each pixel brightness is computed with the standard luminance formula (0.299 red + 0.587 green + 0.114 blue). The strength slider blends between the original color and full grayscale.
Is the effect applied at full resolution?
Yes. The filter runs on every pixel of your original image, so the download is just as sharp as the upload.
Do my photos stay private?
Completely. The filter runs in your browser with canvas; nothing is uploaded to any server.
Preview
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