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How to use Pencil Sketch
- 1
Upload your image
Drop a JPG or PNG photo onto the upload area.
- 2
Click Convert to Sketch
Our server processes the image with OpenCV edge detection to produce a pencil sketch.
- 3
Download the result
Save your sketch as a PNG image.
Features
- +Classic pencil sketch effect via edge inversion
- +Works on photos, portraits, and landscapes
- +Output as high-quality PNG
- +GPU server processing — fast results
- +No watermark, no signup
Frequently Asked Questions
How does the sketch effect work?
The algorithm converts the image to grayscale, inverts it, applies a Gaussian blur, then uses a dodge blend to produce sketch lines.
Does it work on colored photos?
Yes — the sketch is grayscale by design, simulating a real pencil drawing.
What image types work best?
Portraits and images with clear edges produce the most realistic sketch effect.
Related Tools
If you need the next step, try Cartoonize, Grayscale Converter, Image Filters, Photo Editor.