Slab measures your cards with computer vision and checks them against PSA, CGC, and TAG criteria — so you only pay grading fees for the cards that earn them.
Launching on iOS and Android · About 30 seconds per scan · Free trial at launch
Slab is built for the moment before you seal the submission envelope. Scan, read the breakdown, check the math, decide.
The guided camera checks lighting, framing and focus live, so the analysis starts from a photo worth analyzing. Advanced scans add four corner close-ups.
The card, set and printing are matched so the right measurement rules apply. A full-art Pokémon card and a black-bordered Magic card are measured differently, on purpose.
Computer vision measures centering from the physical card edge. Trained models inspect corners, edges, surface and print quality — the criteria professional graders use.
Submit, Borderline, or Pass — with the full breakdown, an estimated grade range, and current market prices, so you know exactly what to send in and why.
An example assessment, annotated. Every number on it is something Slab measured or looked up — nothing is a guess dressed up as a score.
Left/right and top/bottom, front and back, in the same format PSA, CGC and TAG publish their thresholds in. 53/47 means the print sits 3 points toward the left border.
If a card type hasn't passed its accuracy check on an axis, Slab shows "—" instead of a number. An absent reading is a deliberate signal, never a guess.
On an Advanced scan each corner gets its own close-up and its own score, so you know which corner is holding the card back — here, the bottom-left.
Borderline names the check that's close. Paired with the raw and PSA 10 prices, you can see whether the upside is worth the fee and the risk.
Every scan is kept. Mark it as submitted, tell Slab which grader, and report the real grade when it comes back.
Front and back L/R and T/B ratios measured from the physical card boundary with computer vision. Certified results shown; uncertified axes shown as "—" rather than a guess.
All four corners on both sides inspected for chipping, fraying, and whitening — the most common reason a card falls short of a top grade.
Hard to spot under normal light. Slab is tuned to catch subtle edge whitening that will register with a grader.
Front and back scanned for scratches, scuffs, and print loss. Holo and reverse-holo surfaces get dedicated logic for their light-reactive nature.
Print lines, ink spots, and factory marks — distinguished from surface damage. Not every flaw is your fault, and Slab knows the difference.
Back centering, whitening, and surface damage flagged individually — because graders check both sides, and so do we.
Front and back photos. About 30 seconds.
Front, back, plus four corner close-ups.
Each printing gets its own measurement rules, because a yellow Pokémon border, a borderless Magic showcase and a full-art Lorcana Enchanted don't sit the same way on the card.
English and Japanese. Standard, classic-era, e-Reader, full art, alt art, VMAX, rainbow, gold, hyper rare, Trainer Gallery, and card backs.
Modern bordered, white-bordered, borderless and extended art, showcase frames, Mystical Archive, and the card back.
Standard and Enchanted fronts, and the card back.
Character, Leader, Secret Rare and alt-art fronts, and the card back.
Every card type is validated on real graded cards before its centering reading goes live. Where a grading company publishes machine measurements for a card type, we check ours against them; where they don't, we validate against repeat physical measurement of the same card. Results are published per card type, and where a card type hasn't cleared the check yet, the app shows "—" rather than an estimate.
Raw and PSA 10 market prices on every card you scan, plus weekly market movers across all four games — so the grading-fee math is in front of you before you commit.
Run the expected-value check: if the graded price doesn't clear the fee, Slab shows you before you spend it.
Every scan ends in a clear call. "Pass" means the card doesn't earn the grading fee — keeping your money is a win too.
The checks clear. This card has a real shot at the grade that makes the fee worth it.
Close on one or more checks. Slab shows you exactly which ones, so you can decide with open eyes.
The flaws will cost you the grade. Skip the submission, save the money — and know why.
The questions collectors ask before they trust a number.
No. Slab measures what a grader measures and tells you what those measurements mean under PSA, CGC and TAG's published criteria. The final grade is the grading company's call, and graders can differ from each other on the same card. Slab's job is to make sure you're never surprised by centering or a corner you could have seen yourself.
Most apps show you a model's opinion of a photo. Slab finds the physical card edge in your photo and computes centering from it as a ratio, the same way a grading machine does. Corners, edges and surface are scored by models trained on real graded cards. Scan the same card twice and you get the same reading, because a measurement doesn't change its mind.
Every card type is validated on real graded cards before its readings go live. Where a grading company publishes machine measurements for a card type, we check ours against them; where they don't, we validate against repeat physical measurement of the same card. If a card type hasn't cleared that check on an axis yet, the app shows "—" instead of a number. The validation results are published per card type on the How We Measure page and are refreshed as each card type completes certification.
PSA, CGC, BGS and TAG are not affiliated with Slab and do not endorse or certify Slab's measurements.
A dash means Slab won't put a number on that axis for this card type yet. Either the card type is still in validation, or the photo wasn't good enough to measure with confidence. A blank is deliberate: we'd rather show nothing than show a guess.
Centering is reported as raw L/R and T/B ratios, so you can read it against any grader's chart. The verdict and estimated grade range use PSA's published standards. The app also lets you tell Slab which company you're submitting to for tracking — PSA, TAG, BGS, CGC, or other.
Raw card out of the sleeve, flat on a plain surface, in even light with no glare, with all four edges in the frame. The guided camera checks lighting and framing live and tells you when the shot is good. Cards inside toploaders or slabs can't be measured reliably because the plastic edge confuses the card-edge detection.
A Simple scan is the front and back: centering, an overall verdict, an estimated grade range and prices, in about 30 seconds. An Advanced scan adds four corner close-ups, so each corner is scored on its own and edge wear is checked side by side. Use Simple to triage a stack, Advanced before you commit a card to a submission.
Pokémon (English and Japanese), Magic: The Gathering, Disney Lorcana and One Piece. Within each game, printings are handled separately — a full-art card and a bordered card are measured with different rules — and new card types go live as they clear validation.
Mark the scan as submitted and pick the grading company. Slab reminds you when the card is due back. When you report the actual grade, you earn scan credits and Slab learns from the difference between its estimate and the real result.
Slab launches with a free trial; plans and scan limits will be shown at the point of purchase in the app. Core measurements run on your phone. Card identification uses cloud processing. Scan results are saved to your account for history and submission tracking, and your photos are only retained if you opt in to Data Contribution in Settings. See the Privacy Policy for the details.
Launching on iOS and Android. Join the early access list and be first in line.
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