Know the grade before you submit.

CardMaestro turns your phone photos into a digital pre-grade. You get exact centring, a flaw-by-flaw condition check and shareable reports for raw and pre-graded cards.

PRE-SCREEN

L/R 52/48 · T/B 55/45

PSA

BGS

8.5

ACE

What CardMaestro does

Precision centring

Drag outer and inner borders front and back with up to 10× zoom and fine snapping. See exact left/right and top/bottom splits.

Digital pre-grading

PSA, BGS and ACE pre-screens with corner, edge, surface and centring subgrades, plus confidence and every flaw explained.

Flaw review

Mark whitening, dots or damage yourself. Tap each detected issue to zoom in and confirm, mark as minor or ignore it.

Track and improve

Keep a portfolio, log the grades your cards actually get back and compare them with the predictions over time.

Share reports

Send a single card or your whole portfolio by link, with the raw-condition report, the pre-grading report or both.

Raw card cert

Each raw card gets a cert number and a photo footprint, so buyers can compare what they receive against what you shared.

How it works

1
Photograph front and back (plus angled shots for detailed scans).
2
Line up the borders for exact centring.
3
Mark anything you've spotted, then run the digital check.
4
Review the findings, save to your portfolio and share.

Want early access?

Pre-grades are estimates from photos, not official grades. Register and we'll let you know when spaces open.