Question 1

What does QR Visualizer do?

Accepted Answer

QR Visualizer shows how a QR decoder turns an uploaded or captured QR image into decoded text through a visual, stage-by-stage walkthrough.

Question 2

Which QR decoding steps are shown?

Accepted Answer

The walkthrough covers image binarization, finder patterns, rotation correction, alignment, perspective correction, grid sampling, format information, QR masks, data extraction, error correction, and final payload output.

Question 3

Are uploaded QR images sent to a server?

Accepted Answer

No. QR Visualizer processes uploaded images and camera captures locally in the browser. The app is frontend-only and does not upload QR images for decoding.