Free Tool
Trading Card Centering Tool for PSA & Ace Grading
Upload a photo of your card to measure centering percentages and compare the results against PSA and Ace Grading thresholds. This free tool helps collectors quickly check whether their card looks strong for grading before sending it off.
Works with Pokémon, Magic: The Gathering, Disney Lorcana, sports cards and other trading cards. Align the guides with the card edges and border to instantly calculate centering ratios.
Measure centering %
Compare PSA & Ace
Front & back checks
Free to use
Upload your trading card image to measure the centering
Card side:
Front
Back
How to use: Drag the green outer lines to the card edges,
then drag the pink inner lines to the frame.
Tip: Pinch to zoom. Two-finger drag to move around.
Powered by Collector’s Edge
CENTERING
Left / Right
Top / Bottom
Grading thresholds
PSA
Front
| Grade | Centering |
|---|
ACE
Front
| Grade | Centering |
|---|
Note: These highlights are centering-only estimates based on the selected front/back standards.
Note: Results assume the outer box is aligned to a standard trading card (63×88mm).
Disclaimer: This tool is for guidance only. Grading outcomes can vary between companies and individual graders. Centering only makes up part of the overall grade.
