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Card Grading Strategy & Tips
Submit the right cards with proven strategies — from centering and corners to edges and surface quality. Learn AI-powered pre-screening techniques.
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Guides
Card Centering Guide: How PSA, BGS, and CGC Measure Centering
Centering is the #1 reason cards fail grading. Learn the exact standards PSA, BGS, and CGC use, including PSA's 55/45 rule, with visual examples.
CardGrade.io TeamSep 15, 2025·11 min read
Tips & Tricks
10 Common Card Grading Mistakes (And How to Avoid Them)
Avoid these 10 common card grading mistakes that cost collectors money. Learn how to grade cards properly and pre-screen before submitting.
CardGrade.io Team
Free Tools
Free AI Card Grading
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Centering Tool
Check your card centering for free
Edge Analysis
Analyze edge quality with AI
Surface Analysis
Detect surface issues automatically
Cert Lookup
Verify PSA, BGS, CGC, SGC & TAG certs
PSA Grade Predictor
Estimate PSA outcomes before submitting
PSA 10 Chances
Check whether a card has gem potential
2026 Grading Research
Use data to plan smarter submissions
Grade your cards with AI
Pre-screen your cards before submitting to PSA, BGS, or CGC. Plans from $4.99/mo.