Pre-grading tool · PSA-style centering
Gemline — Pokémon card pre-grading & centering calculator
Drop a scan of the card, auto-detect the borders, then fine-tune the guides to get an instant centering, surface and corner breakdown for both sides.
Charizard
Base Set 4/102
PSA
9
BGS
8.5
CGC
9
TAG
870
Three checks, one report
How it works →1
Upload a photo
Front and back — Gemline auto-detects the card's real edges to start from.
2
Fine-tune the guides
Nudge the borders, check the surface under raking light, trace the corners.
3
Get your grade
A predicted score across PSA, BGS, CGC and TAG — before you pay to submit.
Or just try it right here
Drop a card photo to start a real pre-grade report — the same flow as Pre-grade.
Upload frontRequired
Choose frontClick to upload or drag the front card image here
Upload backOptional
Choose backClick to upload or drag the back card image here
Deep ScanBeta
Six photos, one per light angle. You'll get a surface map, the defects we can see, and where TAG, PSA and BGS would likely land.
Start a Deep ScanWant to keep a history of graded cards? Create an account.