Can this calculate PSA centering automatically?
No. V1 is intentionally manual. You crop the card and place the inner-border lines yourself so the result is based on your visible card photo, not an AI edge guess.
Centering checker
Measure your card centering
Step 1: upload a card photo. Step 2: crop tightly to the outer card edges. Step 3: drag the four inner-border lines to the printed border.
1 Upload 2 Crop edges 3 Measure
Crop tightly to the outer card edges. A tilted or poorly cropped photo can make the centering estimate less accurate.
Drag the left, right, top, and bottom guide lines to the printed border or inner frame.
Photo guide
How to take a good card photo
A clean, straight photo makes manual centering easier. The outer card edges and printed border should both be visible.
- Place the card flat.
- Use a plain background.
- Shoot straight from above.
- If the card is tilted, retake the photo or rotate it before measuring.
- Avoid glare and shadows.
For the most accurate result, avoid anything that hides the true card edge.
- Avoid sleeves or slabs for best accuracy.
- Do not crop off the card edges in your original photo.
- Crop tightly to the outer card edges inside this tool.
- A tilted or poorly cropped photo can make the estimate less accurate.
PSA reference
PSA centering reference
PSA 10 reference: approximately 55/45 or better on the front, and 75/25 or better on the reverse. Centering is only one part of grading.
This tool is an estimate only. Final grades depend on the grading company and overall card condition. This site is not affiliated with PSA, BGS, CGC, SGC, or TAG.
Official reference: PSA Grading Standards.
Privacy
Your image stays in your browser
The image is processed in your browser. We do not need your card photo to measure centering. No signup is required.
FAQ
Common questions
What is the PSA 10 front centering reference?
PSA's public Gem Mint 10 standard references image centering within a tolerance not to exceed approximately 55/45 on the front and 75/25 on the reverse. This tool only estimates centering and does not predict a final PSA grade.
Can I use this before sending a card to PSA?
Yes, it is designed for a quick pre-submission centering estimate. It does not replace a professional grade.
Do I need to create an account?
No. The calculator is free to use in your browser, and no signup is required for the MVP.
Are my images uploaded to a server?
No. The card photo is processed locally in your browser for the measurement workflow. Your image stays in your browser.
Does this tool predict my PSA grade?
No. It only estimates centering from manual guide lines. It does not predict a PSA grade, and it does not inspect corners, edges, surface, print defects, or eye appeal.
Does this work for the back of the card?
You can measure a back photo the same way. PSA's public Gem Mint 10 reverse centering reference is approximately 75/25 or better.
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