Turns images into wallpapers at an exact screen size. Crop mode frames one image at a chosen ratio. Collage mode builds panels, an edge-to-edge grid, a custom grid with merged cells, diagonal slices, a photo stack or polaroids from several images. Export is PNG (lossless), JPEG or WebP at a standard size or a custom width. Everything runs in this tab: images are decoded and drawn locally, nothing is uploaded. Images are held in memory only, so settings survive a reload but the pictures have to be loaded again. 21.5:9 is the exact 43:18 ratio used by 3440x1440 and 5160x2160. To bring in an image from a web page, copy it and paste here with Ctrl+V.

Three controls in the top bar, saved between visits. Design sets the shape language and backdrop, mode sets the lightness, and the accent can be any hue. They combine freely, and the accent is re-lit per mode so it never drops below a readable contrast.