Image Duotone Filter
Map local luminance between chosen shadow and highlight colors.
How Image Duotone Filter works
Image Duotone Filter is designed to map local luminance between chosen shadow and highlight colors. Weighted luminance becomes the interpolation factor between independently chosen shadow and highlight RGB colors. Image Duotone Filter adds a focused result for this operation. For Image Duotone Filter, the immediate result links every visible control to a value or preview that can be inspected as the settings change.
Mapping the sample pixel between #001122 and #ffeecc produces RGB 143, 141, 129. Use it to produce a true two-endpoint raster treatment for posters, editorial art, or branded campaign imagery. In Image Duotone Filter, keeping this example as a reference helps distinguish a control change from an unexpected implementation result.
Limits, output, and privacy
The mapping removes original hue information by design; only luminance structure determines the final color position. For Image Duotone Filter, large source images require more memory because the browser holds both source and output pixel buffers while processing. Image Duotone Filter keeps the operation client-side. With Image Duotone Filter, the entered values or selected file remain on this device, and the final action uses only the result already held by the browser.
Frequently Asked Questions
How does the image duotone filter work?
It will map local luminance between chosen shadow and highlight colors. The default controls reproduce the worked vector described on the page.
What should I verify before using the result?
For Image Duotone Filter, large source images require more memory because the browser holds both source and output pixel buffers while processing.
Does the image duotone filter upload my input?
No. Image Duotone Filter performs its calculation, preview, and copy or download action locally in your browser.
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