To crop trading cards from a scan, lay up to nine cards on a flatbed scanner, scan the sheet once, then drop the scan into AutoCropper. It finds every card, straightens the crooked ones, and exports each as its own image, so nine cards cost you one scan instead of nine. Below is the setup I would use for a listing batch, from the glass to the export settings. AutoCropper is free for up to 5 images a day, so a first test sheet costs nothing.
Why scan cards nine at a time
Scanning one card at a time means nine lid lifts, nine previews and nine saved files per sheet. A 3 by 3 layout turns that into one pass. The work that used to be repetitive, cutting each card out of the scan, is the part software does well: cards are high-contrast rectangles on a plain background.
The other half of the saving comes on the second sheet. If you lay your cards out the same way every time, you can save the crop layout once as a crop template and stamp it onto every later sheet instead of reviewing detection again.
Set up the scanner
- Use a clean glass. Dust shows up as specks on every card. Wipe the glass and let it dry before the first sheet.
- Lay the cards face down in a 3 by 3 grid. Leave a small gap between cards, about the width of a finger, so no two touch. Cards that touch can be read as one shape.
- Keep the cards square to the glass, roughly. They do not need to be perfect. AutoCropper straightens a crooked card, but a card lying close to straight needs less correction.
- Sleeves and glare. A card in a penny sleeve scans fine on most flatbeds, but a glossy top loader can add reflections. If a sleeve causes a glare band, scan that card bare or in a thin sleeve.
- Pick a resolution. For listing photos, 300 DPI is plenty for most screens. For a scan you want to keep as an archive of the card, go higher: 600 DPI. My scanning tips page covers how to choose a resolution without waiting minutes for each pass.
- Scan the fronts, then the backs as their own sheets. Treat the backs as a second batch. Keep the same grid layout so both sheets split into the same order.
Split the sheet into separate cards
- Open AutoCropper and drop in your sheets. JPEG, PNG, TIFF, PDF and HEIC files all work.
- Wait for detection. Each card gets its own crop box, numbered in reading order, left to right and top to bottom.
- Look over the boxes. Drag a box to move it, pull a handle to resize it, or draw a missed card by hand.
- If you will scan more sheets in the same layout, save the arrangement as a template and apply it to the next scans. The batch cropping page explains how templates work.
Everything happens in your browser. Your full-size scan is never uploaded: detection uses a compressed copy and the cropping runs on your own machine.
Export every card at the same size
A card scan gives you tight crops, and tight crops are not the same size. A slightly crooked card, a card with a thicker border and a sleeve edge all come out with different dimensions. Listing photos look better when they match, and this is what the export dialog's Pad to aspect ratio option does.
- Natural exports each card as it was cropped. Use it when you want the exact pixels of each card for grading prep or a catalog.
- Pad to aspect ratio places each card on a canvas of the ratio you choose. The list has a 5:7 (Trading card) preset, which matches a standard card shape, and you can add a custom ratio if you list another size. Padding only adds space around the card. It never cuts into it.
- Background. Fill the padding with a color, or choose a transparent background. A transparent background needs PNG, since JPEG has no transparency. If you export JPEG with a transparent fill, the padding is flattened to white.
The export dialog remembers the settings you used last, so the second sheet of a listing session is one click.
Name and deliver the files
Cards leave as one zip, named with the export time, so a batch is easy to find in your Downloads folder. Inside, each file is named after its scan plus its position on the sheet, for example sheet-front_3.jpeg, so card 3 on the front sheet is easy to match to card 3 on the back sheet. If you would rather have your own pattern, custom naming uses a template with the scan name and the card number.
Do I need a paid plan to sell cards?
Free is 5 images a day. One sheet of nine cards is one image, so a free account handles five sheets a day, which is 45 cards. Bigger batches need Pro, and the Pro plans are on the pricing page. One thing to check before you pick a plan: Personal is licensed for personal and family projects, and Commercial covers client work, resale and business use. If you sell cards, the Commercial plan is the one whose terms match.
Common problems
- Two cards detected as one. They were touching on the glass. Rescan with a wider gap, or delete the merged box and draw the two cards by hand.
- A card is missed. Draw its box by hand. Cards with very light borders on a white lid can be hard to detect.
- Glare on a sleeved card. Rescan that card without the sleeve, or angle the sleeve away from the light source by turning the card a quarter turn.
- Cards come out different sizes. Switch the export from Natural to Pad to aspect ratio and choose 5:7.
Questions
How do I scan multiple trading cards at once? Place up to nine cards on a flatbed in a grid with small gaps, scan the sheet once, and split it with AutoCropper. Each card is exported as its own file.
How do I crop trading cards from a scan for free? AutoCropper's free tier covers 5 images a day, and one image can hold a whole sheet of cards, so a few sheets a day cost nothing.
What aspect ratio is a trading card? The export dialog's Trading card preset is 5:7. A standard card is 2.5 by 3.5 inches, which is the same shape.
Can I use my phone instead of a scanner? Yes. A flat, evenly lit photo of a sheet works, but a flatbed gives even light and no perspective skew. See how I scan multiple photos at once for the same idea applied to prints.