UTILITY
Detect image edges
Highlight local contrast transitions and contours.
Tool
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INSTRUCTIONS
How to use it
- 1
Choose the source image from your device.
- 2
Adjust the amount or color controls, and inspect the updated image preview.
- 3
Download the processed PNG; your original file remains unchanged.
DETAILS
About this tool
A 3×3 high-pass convolution emphasizes sudden color changes and converts the result to grayscale contours.
Texture and sensor noise can also appear as edges.
Practical questions
What does this tool change or return?
A 3×3 high-pass convolution emphasizes sudden color changes and converts the result to grayscale contours.
What are its limitations?
Texture and sensor noise can also appear as edges.