Image to Pencil Sketch

This tool converts photographs into pencil sketch-style artwork using digital image processing techniques. By combining grayscale conversion, pixel inversion, Gaussian blur, and color dodge blending, it creates a realistic hand-drawn pencil effect.

The algorithm works by first converting the image to grayscale, then inverting the pixel values. A Gaussian blur is applied to the inverted image, and finally the original grayscale and blurred-inverted layers are combined using a color dodge blend. This produces a pencil drawing effect where edges and contours become visible strokes.

The blur radius slider lets you control the character of the sketch: lower values produce fine, detailed lines while higher values create broader, softer strokes. Perfect for creative projects like social media profile images, blog illustrations, presentation visuals, and postcard designs. All processing happens in the browser with no server upload, so your images stay private and secure.