Free Online Text Case Converter Technical Specification

Overview

A high-performance, single-file browser application designed to help developers and content creators transform text strings into various programming and editorial case formats. The tool focuses on speed, accessibility, and a modern, distraction-free interface.

Core Features

• Real-Time Transformation: Instant conversion as the user types.
• Supported Formats:
  • camelCase
  • PascalCase
  • snake_case
  • kebab-case
  • CONSTANT_CASE
  • Sentence case
  • Title Case
  • lowercase
  • UPPERCASE
• Bulk Operations: Clear input with a single click.
• Smart Clipboard: 'Copy to Clipboard' buttons for every result field.
• Statistics: Real-time character and word count tracking.

UI Layout

• Header: Clean, centered title with a brief functional description.
• Input Section: A large, high-contrast textarea with a subtle focus-ring, accompanied by a 'Clear' button.
• Stats Bar: A discreet bar showing word/character counts, positioned below the input.
• Results Grid: A responsive 2-column grid displaying the converted text in read-only input fields for easy copying.

Design & Aesthetics

• Palette: Clean white background (#FFFFFF), neutral slate greys (#F8FAFC, #E2E8F0) for backgrounds and borders, and a primary brand blue (#2563EB) for action buttons.
• Typography: Sans-serif, human-readable font (Inter or System UI) for maximum legibility.
• Animations:
  • Smooth fade-in transitions for result rows.
  • Subtle button hover scaling (transform: scale 1.02).
  • Micro-interaction 'Copied!' feedback toast notification (using a custom absolute-positioned div).

Developer Constraints & Requirements

• Single-File Architecture: All HTML, CSS, and Vanilla JavaScript must reside in one .html file.
• No Storage: Strictly no localStorage, sessionStorage, cookies, or IndexedDB. Use in-memory variables.
• Dependency Management: Use Tailwind CSS via CDN for styling. Use vanilla JavaScript for logic. No external build processes.
• Sandbox Safety: Use target="_blank" and rel="noopener noreferrer" for any external resource links.
• Responsive Design: Utilize Tailwind's utility classes to stack columns on mobile devices and expand to a multi-column grid on larger screens.
• No Alerts/Prompts: Replace browser default alert() calls with a custom UI overlay element if user feedback is required.