Deskew Image
Detect image rotation angle using computer vision and automatically align horizontal text lines.
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Select or drag & drop a crooked image
Supports PNG, JPG, WEBP, BMP
Calculating Hough Line Transformation...
Failed to deskew image.
Original Image
Deskewed Output
Straightened result preview will appear here
How OpenCV Deskewing Works
Hough Lines Detection
Uses `HoughLinesP` to locate dominant horizontal and vertical text lines and edge vectors in the document image.
Median Angle Calculation
Computes the precise median angle of deviation to accurately filter out outliers and isolate actual document tilt.
Affine Rotation Warp
Applies `getRotationMatrix2D` and `warpAffine` interpolation to straighten text lines horizontally without clipping margins.
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