STEP 01
Upload image
Upload a clear image of the card front, and optionally add the back for a complete report.
The most precise tool for measuring centering & evaluate surface condition with the exact same parameters as all the best grading companies
Zentri Studio guides collectors through a manual precision workflow, then handles the correction, measurement, taper analysis, grading-company estimates and surface relief imaging.
Upload a clear image of the card front, and optionally add the back for a complete report.
Zoom in and select two precise points per outer edge to define the true card limits.
Repeat the point selection for the inner border so the tool can calculate border thickness accurately.
Perspective distortion is corrected and the card is straightened for cleaner, more consistent measurement.
Review a centering-only report with predicted outcomes for PSA, TAG, BGS, CGC, and ACE.
The system generates a surface relief imaging of your card, exposing even the smallest surface and corner imperfections.
Watch the complete workflow: upload, define outer edges, mark the inner border, correct perspective distortion, calculate centering, detect taper, and generate the final report.
Front-side centering, border taper, artwork deviation, and grading-company estimates are converted into a technical report collectors can save, review, and compare before submission.
Estimates are based on centering thresholds only. Final grades may differ based on surface, corners, edges, print defects, and authenticity.
Zentri’s Surface Relief Imaging transforms your corrected card image into a high-definition grayscale relief view, bringing surface texture, fine lines, scratches, dents, print irregularities, and other visible details into sharper focus.
By reducing the distraction of color and artwork, SRI creates a cleaner inspection view that helps collectors evaluate the surface with more confidence and precision.
Create a free Zentri account and receive 5 free monthly card pregrading credits. Your free credits reset every month, so you can keep trying Zentri and explore the full report workflow.
Subscribe for monthly card credits, buy one-time packs, or unlock a premium 30-day unlimited pass when you need to process a large collection.
For casual collectors checking a few cards per month.
Best for active collectors preparing regular submissions.
For sellers, serious collectors, and higher monthly volume.
One-time 30-day pass for major submission prep.
Buy credits once and use them when you need them.
Quick answers about accuracy, demo mode, privacy, card credits, and whether this replaces professional grading.
No. Zentri Studio is a pregrade and centering analysis tool. It helps you decide which cards may be worth submitting.
Yes. Demo mode uses prepared sample cards so new users can test the workflow safely.
One card credit covers a complete centering workflow for one card, including report output and grading-company centering estimates.
Yes. You can buy 1, 10, or 25 card packs as one-time purchases.
Create a free Zentri account and get 5 monthly card centering measurements.