Printer Vitals Turns a Test Page into Evidence

Field notes

The workflow depends on a controlled physical reference: users print at 100% / Actual Size, retain all four page edges and corner markers, and submit a photograph for browser-side analysis. The method separates line continuity from repeatable banding, checks geometry against the paper, and compares black, cyan, magenta, and yellow output. The page says photos remain local in this release, with latest metrics potentially stored in browser local storage for retesting.