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Generator · Exact-size

Make a wallpaper at your phone's exact size

A mesh gradient generator that exports at your screen's true native resolution — pick a device, a palette, and a seed, and download a PNG that fits pixel-for-pixel. Every wallpaper is reproducible from its visible seed, every color set is original, and everything renders in your browser: nothing is uploaded, ever.

Device— Native px— Seed— Points— Exportidle

How this maker works

Every wallpaper here is a mesh gradient: a small number of seeded control points, each carrying a color from the palette you chose, blended into a smooth two-dimensional field. The readout above is the instrument panel — it names the device, the exact native pixels the export will have, the integer seed, and the control-point count. Those five values are the complete recipe: nothing about the image depends on anything else, which is why the same settings reproduce the same wallpaper on any visit.

The math runs entirely in this page. The field is inverse-distance interpolation over the seeded points, plus a fine seeded grain that prevents the banding smooth gradients otherwise show on OLED screens. The live preview renders small and cheap; pressing Export renders the full native resolution in short slices so the page stays responsive, then hands the pixels to your browser's own PNG encoder for download. No image ever crosses the network — the site's security policy forbids it — and device sizes come from a table compiled by hand, each entry checked against two independent published sources.

The honest limits: color values are deterministic, but the downloaded file's bytes can differ between browsers because PNG encoders differ — a seed reproduces the picture, not necessarily an identical file. The device table is a snapshot of published specifications, maintained by hand, so a brand-new model may take time to appear; the custom size option (240–4096 px per side, out-of-range values clamped and reported) covers anything missing. And once the file is on your phone, the operating system has the last word — perspective zoom or launcher cropping can still move the edges, which is a setting on the phone, not a property any file can override.

Frequently asked questions

Will the wallpaper be exactly the right size for my phone?
Yes. Pick your model and the export is rendered at that panel's native pixels — 1320×2868 for an iPhone 17 Pro Max, for example — taken from a device table in which every entry was cross-checked against two independent published sources. The readout always shows the exact pixels you are about to download, and a custom size is available if your device isn't listed.
What does the seed do?
The seed is the whole recipe. The same seed with the same palette, point count, and size reproduces the same wallpaper every time, and the seed rides the page URL — so bookmarking or sharing the link is sharing the wallpaper itself. The color values are fully deterministic; only the PNG file's bytes can differ slightly between browsers, because their PNG encoders differ.
Is anything uploaded or stored?
No. The gradient is computed and drawn entirely inside this page — there is no server rendering, no account, and nothing you make is sent or kept anywhere. The site's security policy blocks requests to other origins, so the no-upload claim is enforced by your browser rather than just stated.
Why does my phone crop or zoom the wallpaper?
Phones move wallpapers for effect: iOS applies perspective zoom unless you turn it off while setting the wallpaper, and many Android launchers pan or crop the image across home screens. Exporting at your model's exact native pixels gives the system no reason to rescale anything, and switching off zoom or motion effects when you set it keeps the edges where you put them.
Who owns the wallpapers I make, and is this site affiliated with any phone maker?
Wallpapers you generate here are rendered on your device from your chosen seed and are yours to use freely, personal or commercial. The device names on this page are factual references to the models people own; this site is independent and has no connection to Apple, Google, or Samsung.

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