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Tailwind Class Merger

Merge, deduplicate, and sort Tailwind CSS classes. Detects duplicate classes, resolves conflicts (keeps last), and sorts alphabetically or by category. Runs entirely in your browser — your data never leaves your machine.

tailwind css merge deduplicate sort utility

Published May 30, 2026

All interactive tools run entirely in your browser. Your data never leaves your device.

How It Works

Paste Tailwind CSS classes, and the tool removes duplicates, resolves conflicts (keeping the last occurrence), and optionally sorts classes alphabetically or by category group.

Features

  • Duplicate removal: detects and removes repeated classes
  • Conflict detection: finds conflicting classes (e.g., text-red-500 vs text-blue-500)
  • 3 sort modes: no sorting, alphabetical, grouped by category
  • Category grouping: layout, sizing, spacing, typography, background, border, effects, etc.
  • Responsive prefix support: handles md:, lg:, etc.
  • 5 examples: duplicates, conflicts, sorting, complex merge
  • Private: runs entirely in the browser — no data transmitted

Use Cases

  • Cleaning up messy Tailwind class strings after copy-pasting
  • Resolving conflicting utility classes in component props
  • Sorting classes for consistent code style
  • Auditing class usage in templates