Question 1

How does the Sub-Degree Horizon Straightening slider work?

Accepted Answer

The micro-rotation slider allows continuous rotation between -45.0° and +45.0° in 0.1° increments. The engine applies an affine matrix transformation to the raster buffer while dynamically calculating the maximum inner containment box to prevent transparent diagonal margins.

Question 2

What photographic composition overlays are available?

Accepted Answer

You can toggle Rule of Thirds (3x3 grid with visual power-point nodes), Golden Ratio / Phi Grid (1:0.618 sectional proportion lines), Fibonacci Logarithmic Spiral (with interactive 4-quadrant orientation flipping), and a Center Focus optical crosshair.

Question 3

How does the Circular Avatar crop mode handle transparency?

Accepted Answer

When in Circular Avatar mode, the engine uses an elliptical canvas clipping path. When exported to PNG or WebP, all pixels outside the circular boundary are written with alpha channel 0, producing a perfectly transparent circular cutout ready for profile badges and UI avatars.

Question 4

Can I specify exact pixel dimensions for the crop box?

Accepted Answer

Yes. The Coordinate Numerical Precision Deck provides two-way synchronized inputs for X Offset, Y Offset, Width, and Height in exact native pixels. Modifying the inputs immediately updates the visual canvas bounding box, and dragging canvas handles immediately updates the inputs.

Question 5

Is my photograph uploaded to any cloud server during cropping?

Accepted Answer

No. All canvas matrix transformations, composition rendering, bilinear resampling, and pixel extraction execute 100% in local browser RAM. Zero image data is transmitted across the network.

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