Free Tool
Card Centering Check
Measure your card's centering instantly — free, right in your browser. No login, no upload to any server.
Angle-proof — shoot from any angle
Each corner moves freely, and our perspective (homography) math flattens the card before measuring — so a photo taken at a tilt still reads true centering, the same principle pro AI graders use. Rigid rectangle tools drift on an angled shot; this doesn't. No other free tool does it.
🎴
Upload or take a card photo
PNG / JPG / WEBP · shoot the card straight-on, filling the frame
📐 How to place the frames
Gold dots = card edge. Hug the matte/outer border and keep the dashed line straight on all four sides.
Green dots = inner border, where the printed design starts — the anchor for the centering gap.
How it works
1
Upload a photo
Straight-on, card filling the frame. Nothing leaves your device.
2
Fit the frames
Drag the outer corners to the card edge, inner corners to the art edge.
3
Read the centering
L/R and T/B border ratios, mapped to each company's centering grade.
4
Share or grade
Save a branded result, or send the card to PJG for the real grade.