A professional tool for seamless pattern design and export, featuring tiling preview, seam heatmap detection, and print-ready output with DPI control.
What is Seamless Pattern Designer PRO?
Seamless Pattern Designer PRO is a professional tool built specifically for seamless pattern design and output. It runs entirely in the browser with no server uploads required, ensuring both efficiency and privacy.
Whether you are a pattern designer, illustrator, or AI image creator, you can use it to quickly check tiling seams, preview repeat effects, and export print-ready PNG/PDF files.
Who is this for?
- Designers creating repeatable tiling assets
- Creators verifying whether AI-generated images are truly seamless
- People making printed products (fabric, wrapping paper, stickers, cards)
- Anyone who needs to confirm size, DPI, and clarity before output
Core Features
- Image Upload: Supports PNG/JPG with automatic size and DPI detection (defaults to 300 DPI)
- Tiling Check: Grid, Half-drop Row, Half-drop Column modes with Mirror and Offset Preview
- Seam Detection: Heatmap showing edge differences to quickly locate problem seams
- Output Settings: Width/height in px/in/cm, DPI control, tile count, with common presets
- Export: One-click PNG or PDF export with PDF anti-seam processing
Workflow
- Upload your image (PNG or JPG)
- Select tiling mode and check repeat effect
- Enable heatmap to find seams, adjust threshold for precision
- Set output dimensions and DPI
- Preview, then export PNG/PDF
Keyboard Shortcuts
- P: Preview output
- E: Export PNG
- R: Reset view
