Technical Specification: Free Online Speaking Time Estimator

Overview

A clean, professional, and responsive web tool designed for public speakers, content creators, and scriptwriters to estimate the duration of their spoken content based on word count and variable pacing.

Core Features

• Real-time Processing: Time estimation updates instantly as the user types or pastes text.
• Adjustable Pacing Slider: Users can customize their WPM (Words Per Minute) from 100 to 200 WPM to match their unique speaking style.
• Stat Dashboard: Clearly displays Word Count, Character Count (with/without spaces), and estimated time in Minutes and Seconds.
• Visual Progress Indicator: A dynamic progress bar or ring that fills as the text grows.
• One-Click Clear: Easily reset the text area without page reloads.
• Clipboard Support: One-click functionality to copy the text to the system clipboard.

UI Layout & Design

• Aesthetic: A professional 'SaaS' look. Pure light-mode interface using off-white backgrounds (#F9FAFB), white containers with soft shadows (#FFFFFF), and a professional slate-blue accent color (#3B82F6).
• Header: Simple, centered title area.
• Main Tool Area: A large, spacious textarea that occupies the center of the screen, featuring subtle borders and rounded corners (rounded-xl).
• Control Panel: A dedicated section below the text area for the WPM slider and statistics.
• Typography: Clean, sans-serif font stack (Inter or System UI) for maximum readability.

Technical Implementation Constraints

• Single-File Architecture: All CSS and JS must be embedded within the single index.html file.
• No Persistent Storage: Do NOT use localStorage, sessionStorage, or cookies. If the page is refreshed, the input is wiped by design to ensure privacy.
• Responsive Design: The tool must stack gracefully from a wide desktop view to a single-column layout on mobile devices.
• Interactivity: Use smooth CSS transitions for UI changes. No heavy frameworks; use Vanilla JavaScript event listeners (input, change).

Color Palette

• Primary Accent: #3B82F6 (Blue-500)
• Background: #F9FAFB (Gray-50)
• Card Background: #FFFFFF (White)
• Text Primary: #1F2937 (Gray-800)
• Text Secondary: #6B7280 (Gray-500)

Development Directives

1. Use Tailwind CSS via CDN for rapid styling.
2. Bind input events on the text area to trigger an updateStats() function.
3. The calculation formula: Time in minutes = wordCount / WPM_setting.
4. Ensure all interactive elements have focus states for accessibility.
5. Strictly adhere to the light-mode theme; no dark mode toggle or dark-themed overrides.