Seamless pattern mockups

Repeat a design across your product and know whether the tile holds up. SudoMock checks where the copies meet, shows where a seam falls, and can fix it before you render.

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Plans start at $25/month. Seam checks are free. A fix uses 60 credits.

Four copies of a pattern tile with a line where the copies meet

Visible seam

Four copies of a pattern tile with no line where the copies meet

Seamless

Illustration: four copies of one tile, with a seam where they meet and without one.

A pattern mockup from one tile

Turn on Pattern and your design repeats across the whole print area, on a PSD smart object or a photo mockup surface. Tile size and spacing are yours to set.

The check runs on its own

With Pattern on and the copies touching, SudoMock looks at where they meet. You get one of three answers next to your product.

Seamless
The copies meet with no visible line.
Faint seam
A faint line may show where the copies meet.
Visible seam
A line shows where the copies meet, and you see where it falls.

Fix it where you found it

Fix the seam from the same panel. The fixed tile keeps its width and height, you can compare it with the original, and you choose which one to use. If a fix fails, its credits come back.

Seam checks are free. A fix uses 60 credits. Even without a subscription, a fix is $0.30.

In your store

Studio runs the same check for shoppers on Shopify and WooCommerce, and can offer the fix. Shoppers never see a price, a fix uses credits from your account, and you can turn the check and the fix off in your studio settings.

The same check in the API

Check a tile with POST /api/v1/check-seams. Fix it with POST /api/v1/fix-seams, then follow the job or take the seam_fix.succeeded webhook. The Node and Python SDKs, n8n and MCP reach the same check and fix.

Check and fix pattern seams
curl -X POST "https://api.sudomock.com/api/v1/check-seams" \
  -H "Content-Type: application/json" \
  -H "x-api-key: sm_your_api_key" \
  -d '{
    "url": "https://example.com/pattern-tile.png"
  }'
POST /api/v1/check-seamsno credits used

Seamless pattern questions

A seam is a line that shows where copies of a tile meet. It appears when the tile's right edge does not run on into its left edge, or its bottom into its top, and it repeats across every copy on the product.

Seam checks are free. A fix uses 60 credits. Even without a subscription, a fix is $0.30. Plans start at $25/month.

Its credits come back, and your original tile stays as it was.

When the copies of the tile touch. With spacing between the tiles the copies never meet, so there is no seam to find.

No. Checking the same tile brings back the fix you already have, ready to use.

Yes. POST /api/v1/check-seams takes a tile by URL or base64 and answers seamless, faint_seam or visible_seam, with the sides and pixel ranges where a seam shows. No credits are used.

Yes. When a shopper repeats a design as a pattern, Studio checks where the copies meet and can offer a fix. Shoppers never see a price, a fix uses credits from your account, and you can turn the check and the fix off in your studio settings.

Check your next tile on a mockup

Open the editor, add your design, turn on Pattern and see the answer next to your product.

Open the editor