Repper vs Seamlessify

Repper turns a source image into a seamless, tileable pattern that users can adjust and export. It offers more than 30 tiling styles, including classic wallpaper groups and the Penrose Diamond, plus color controls and effects such as duotone, black-and-white, gradients, halftone, and Metamorphosis. Users can start from bitmap or vector images or browse more than a million Unsplash photos inside the app. Repper also offers 3D previews of products including clothing, pillows, scarves, notebooks, and fabric. Export formats include JPEG, PNG, and SVG/vector; the Pro membership page lists exports up to 35k × 35k pixels. Desktop and tablet access runs in a browser without installation, and Repper Mobile runs in a phone browser on iOS and Android. The mobile and desktop apps are separate, so designs cannot be accessed across both. Repper Mobile is free, but uploads are limited to the first two weeks and exports are simplified. Pro Monthly costs $12.99 a month, including taxes, and includes commercial use rights, 3D preview and export, and account sync and backup.

Seamlessify turns images into repeating patterns, with PNG, JPG, and batch ZIP exports. The web tool accepts PNG, JPG, and WEBP files, with batches of up to 100 images or 500 MB. For direct stitching, supported images are processed in the browser rather than uploaded to the maker’s image-processing servers. The tool blends opposite edges to soften seams and abrupt color changes, and lets you set the number of rows and columns independently. A 3 × 3 preview helps inspect a repeat; output options include seamless tiles, horizontal rolls, and vertical panels. Downloads are rendered from the original image. AI generation can use a text prompt or derive a prompt from a reference image, but requires an account and credits. The listed models are Z-Image Turbo and Ideogram V4 Tiling, delivered through fal.ai; DeepSeek V4 Flash Vision Experimental analyzes reduced reference images. AI generations and related records are kept privately for up to 30 days before scheduled deletion. The free plan includes two one-time AI credits after email verification and unlimited direct stitching; paid plans start at $8.25/mo (annual).