Start landscape and large
Use a 3200 × 2000 source so the delivery can create multiple high-quality desktop crops.
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Codex desktop themes
Design a Codex desktop theme for real window shapes.
A desktop theme is not a wallpaper pasted under an interface. Navigation, task surfaces, dialogs, side-by-side windows, and display changes cover different parts of the composition, so the pack needs several intentional assets and a stable contrast strategy.
Design perspective
Make the visual idea survive the work.
Begin with a landscape master at 3200 × 2000 and define a protected reading field before placing the subject. From there, art-direct 16:10, 16:9, and 4:3 crops instead of relying on a center crop to make every decision.
CSS can size an image with cover-like behavior, but it cannot recover a subject that was composed in the wrong place. Responsive rules help after art direction; they do not replace source-image planning.
Adaptation guide
Treat cropping as part of the theme
Mark interface coverage
Reserve the left navigation and central task region before placing faces, products, logos, or bright focal objects.
Export three ratios
Deliver dedicated 16:10, 16:9, and 4:3 assets plus a lightweight preview rather than one universal image.
Inspect dialogs and empty states
A background behaves differently when exposed on home and partially hidden by a modal, task, or code block.
Best for
- Anyone generating a new landscape Codex background
- Laptop-to-monitor workflows
- Themes with a recognizable subject, logo, or light source
Watch for
- Portrait images stretched into landscape
- Important subjects placed dead center
- Assuming CSS cover preserves every composition
Free starting points
Try the direction before going custom.
Codex
What should we build in Nova Studio?
Cloud Atelier · A brighter place to build.
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Codex 5.6
Codex
What should we build in Nova Studio?
Sage Workshop · Natural focus, engineered well.
Nova StudioLocalmain
Do anything
Full access
Codex 5.6
Practical answers
Questions worth answering before you choose.
Can CSS automatically fit any image to Codex Desktop?
CSS can scale and crop an image, but it cannot guarantee that a face, logo, or focal object remains visible. Dedicated crops and safe-zone composition still produce the best result.
Can I upload a portrait image for a Codex theme?
It can be cropped, but a portrait source often loses its subject or leaves insufficient landscape context. Generate or provide a 16:10 landscape source whenever possible.
Why use 3200 × 2000?
It provides a high-resolution 16:10 master with enough room to derive 16:9 and 4:3 crops for common desktop and compact layouts.
Continue the brief
Related Codex theme guides.
Platforms and setup
A widescreen Codex theme that uses the extra room.
Wide displays create space for atmosphere, but they also tempt theme authors to place important content at both extremes. The Codex window may not remain full screen, so a durable composition feels complete at full width and still works when only its central or compact crop is visible.
Read the guide →Platforms and setupCreate a Codex background image that fits the interface.
The best Codex background is designed around what will cover it. It offers a calm field under navigation and task surfaces, places the meaningful subject toward a safe outer region, and includes enough visual context to survive three desktop ratios.
Read the guide →Theme stylesA cozy Codex theme for unhurried work.
Cozy themes replace clinical contrast with warm, familiar cues: paper, wood, amber light, soft fabric color, or a quiet evening atmosphere. The challenge is keeping that warmth from turning every surface beige and every state indistinct.
Read the guide →Use casesA Codex theme for designers who notice the details.
Designers can push a theme beyond generic dark mode, but the best result still behaves like a product surface. It needs a coherent material idea, intentional spacing, accessible interaction states, and artwork that survives real window geometry.
Read the guide →