Put a transparent color in an image file using JavaScript. Gray scale. Base64 extension

[ABG]

(added to FAQ)

FAQ Section: Colours

Colored text in an HTML Label - @Anke Colour Codes - MIT Colour Codes Android and HTML - TimAi2 Sample color match game - @ABG 12/2025 Use modulo 2^32 when comparing colors - Red_Panda Sample Color Pickers - @Nick68 Image Color Manipulation in JavaScript Using Base64 Extension - @Juan_Antonio Aug 2021 Complementary and HSV Colour Conversions - @TIMAI2 Mar 2026