Card Centering Tool

Use the full Centering workbench above to align the card and printed-border boundaries, then review each axis as an estimate based on the current guides.

Choose repeatable boundaries

Place each Outer guide on the physical card edge and each Inner guide on the printed-border boundary you intend to compare. Do not use a sleeve edge, shadow, glare line, or artwork detail as the card boundary.

Read both axes and keep uncertainty visible

Review left/right and top/bottom separately. Retake the photo or adjust perspective when an edge is hidden or angled, and treat the result as centering evidence—not a predicted card grade.

Use direct measurements when you already have them

If you measured all four borders with a ruler, caliper, scan, or image editor, use the manual calculator instead of rebuilding those values from a photo.

Read the methodology Use manual measurements Improve the photo