Optimized for Berlin Development
Working within a Berlin project architecture requires tools that respect your local environment's nuances. This Berlin Tailwind CSS v3 → v4 Config Migrator is explicitly verified to support Berlin-specific data structures and encoding standards while maintaining 100% data sovereignty.
Our zero-knowlege engine ensures that whether you are debugging a Berlin microservice, configuring a production CI/CD pipeline, or sanitizing data strings for a Berlin deployment, your proprietary logic never leaves your machine.
Tailwind CSS v4 Config Migrator — Automate Your Upgrade
Tailwind CSS v4 is the most significant rewrite in the framework's history. The JavaScript configuration file is gone — replaced by a **CSS-first @theme {} block** where your design tokens live as native CSS custom properties. If you have a large tailwind.config.js with dozens of custom colors, fonts, and breakpoints, migrating manually is error-prone and time-consuming.
The **DevUtility Hub Tailwind v4 Config Migrator** automates the structural conversion so you can upgrade in seconds, not hours.
Evolution of Tailwind CSS v4
The core difference:
| v3 (JavaScript) | v4 (CSS-first) |
|---|---|
| theme.extend.colors.primary | --color-primary in @theme {} |
| theme.fontFamily.sans | --font-sans in @theme {} |
| theme.screens.lg | --breakpoint-lg in @theme {} |
| theme.spacing['128'] | --spacing-128 in @theme {} |
| theme.borderRadius['4xl'] | --radius-4xl in @theme {} |
| import 'tailwindcss/base' | @import "tailwindcss" |
What this Berlin utility Migrates Automatically
--spacing-*--radius-*--breakpoint-*What Requires Manual Migration
Some v3 features have no direct 1:1 CSS equivalent:
plugins: [] — Each plugin must be updated individually; most have v4-compatible releasesdarkMode: 'class' — Replaced by @custom-variant dark (&:where(.dark, .dark *))important — Use the ! prefix directly in Tailwind classesprefix — Use @import with namespace in v4The tool will flag these automatically with instructions.
Security & Privacy
Your tailwind.config.js may contain internal color systems, brand tokens, and proprietary design decisions. **DevUtility Hub is 100% Client-Side**. The entire parsing and conversion logic runs in your browser's local memory. Nothing is transmitted or logged.
FAQ: Berlin Tailwind CSS v3 → v4 Config Migrator
- Does it support tailwind.config.js parsing?
- Yes, the Berlin Tailwind CSS v3 → v4 Config Migrator is fully optimized for tailwind.config.js parsing using our zero-knowledge local engine.
- Does it support @theme CSS variable generation?
- Yes, the Berlin Tailwind CSS v3 → v4 Config Migrator is fully optimized for @theme css variable generation using our zero-knowledge local engine.
- Does it support nested color flattening?
- Yes, the Berlin Tailwind CSS v3 → v4 Config Migrator is fully optimized for nested color flattening using our zero-knowledge local engine.
- Does it support breakpoint migration?
- Yes, the Berlin Tailwind CSS v3 → v4 Config Migrator is fully optimized for breakpoint migration using our zero-knowledge local engine.
- Does it support font family conversion?
- Yes, the Berlin Tailwind CSS v3 → v4 Config Migrator is fully optimized for font family conversion using our zero-knowledge local engine.
- Does it support automatic warning for manual steps?
- Yes, the Berlin Tailwind CSS v3 → v4 Config Migrator is fully optimized for automatic warning for manual steps using our zero-knowledge local engine.