Next Theme Editor

A versatile theme editor for developers and designers to define palettes, typography, and layout tokens, then preview and export theme configurations.

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About This Tool

A theme editor provides a structured, token-based approach to styling web interfaces. It captures colors, typography, spacing, breakpoints, radii, and shadows as tokens that can be shared across projects. Users define a token taxonomy, set base scales, and generate themed configurations. The tool validates color formats and units, expands palettes for accessibility, and exports JSON or CSS/SCSS representations for integration in codebases. By centralizing tokens, teams maintain consistent visuals while permitting project-specific overrides. The editor supports multi-theme workspaces, versioning, and diff views to track changes. It is particularly valuable for design-system teams, frontend developers, and product designers who need repeatable, audit-friendly theming workflows. Unique value comes from framework-agnostic exports, built-in validation rules, and automated accessibility checks that flag insufficient contrast or inconsistent token usage. Use cases include creating a light and dark variant, migrating a legacy token set, and delivering tokens ready for a design system repository. Core features include color and typography editors, spacing scales, breakpoint definitions, token import/export, and JSON/CSS/SCSS outputs, plus preview of how tokens map to CSS variables. This reduces drift between design and implementation and speeds up onboarding for new projects.

How to Use

  1. Provide inputs: define theme name and core token sets (colors, typography, spacing).
  2. Configure scales and breakpoints, and choose export format.
  3. Run validation and resolve any token conflicts or invalid values.
  4. Review the generated outputs (JSON, CSS variables, or SCSS maps).
  5. Export and import into target projects or design systems.
How to use nxtheme editor

Frequently Asked Questions

Find Quick Answers

What formats can I export?
Exports include JSON token dictionaries, CSS custom properties, and SCSS maps. Each format preserves token names and values, enabling straightforward integration into frontend code and design system repos.
Can I import existing tokens?
Yes. The tool accepts existing token schemas in JSON and maps them into the internal token model. Import preserves hierarchy and allows merging with new tokens, with conflict resolution options.
How does validation work?
Validation checks color formats, unit consistency, required tokens, and breakpoints. It reports exact token paths with issues and suggests fixes; invalid tokens block export until corrected.
Is multi-theme support available?
Yes. Users can create multiple themes within a workspace, compare differences, and export each theme independently or as a combined bundle for platform-wide deployment.

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