Image to Sketch
NEWTurn any photo into a pencil sketch or edge-detected drawing. The classic grayscale-invert-blur-dodge pipeline runs entirely in your browser.
Drag an image here, paste from clipboard (Ctrl+V), or
Convert any photo to a pencil sketch or edge-detected drawing. Runs entirely in your browser.
Original
Sketch Result
How to use Image to Sketch
- Upload an image or paste from clipboard.
- Choose pencil sketch or edge detect mode.
- Adjust the intensity slider to fine-tune the effect.
- Download the sketch as PNG or JPEG.
What is Image to Sketch?
This tool implements the classic pencil sketch algorithm: convert to grayscale using luminance weights, invert the image, apply Gaussian blur, then blend using color dodge. An alternative edge-detect mode uses the Sobel operator. Adjust intensity to control the sketch strength.
FAQ
- How does the pencil sketch effect work?
- The image is converted to grayscale, inverted, blurred with a Gaussian kernel, then color-dodged against the original grayscale — the classic technique for simulating a pencil drawing.
- What is the edge detect mode?
- It uses the Sobel operator (a 3x3 convolution kernel) in both horizontal and vertical directions to find edges, producing a white-background line drawing.
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