Diff Checker

Side-by-side line diff for plain text.

Features

• Line-level LCS-style diff
• Added / removed / unchanged markers
• Stats summary

Limitations

• Character/word diff modes not included
• Large files may be slow in pure JS

Run

npm install
npm run dev

Stack

• Next.js App Router
• TypeScript
• Tailwind CSS
• Fully client-side (no API keys)

Honesty notes

• Portfolio developer utility showcase
• Not a multi-tenant SaaS product