Free Online Unicode Character Map & Hex Code Finder

Overview

A high-performance, single-file browser utility designed for developers, designers, and content creators. It provides a searchable, filterable index of the Unicode standard, allowing users to quickly locate symbols, emojis, and special characters, then copy the corresponding Hex, Decimal, and HTML entity codes.

Core Features

• Real-time Search: Instant filtering of thousands of characters by name, keyword, or code.
• Category Filtering: Organize characters by blocks (e.g., Arrows, Math, Currency, Emojis, Box Drawing).
• Detail Overlay: Click any character to open a detailed panel showing the Glyph, Hex Code, Decimal Code, CSS/HTML Entity, and UTF-8 Bytes.
• One-Click Copy: Built-in clipboard integration to copy the character or its various code representations with a single interaction.
• Responsive Grid: A dynamic character grid that adapts its column count based on screen width.
• Performance Oriented: Built using a virtualized list approach or efficient DOM recycling to handle thousands of items without lag.

User Interface Layout

• Header: Contains the application title and a concise instruction sub-header. A global search bar sits prominently below.
• Control Panel: A secondary bar containing category filter chips (buttons) to refine the grid view.
• Main Content Area: A responsive, scrollable grid of character tiles. Each tile displays the symbol in a large font size with a hover effect.
• Selection Modal: A centered, non-intrusive modal that appears when a character is clicked, providing deep-dive technical information.

Design System & Aesthetics

• Color Palette: Strict light-mode palette. Use a clean background (#ffffff), soft neutral grays (#f8fafc, #e2e8f0) for containers, and a primary brand color (e.g., #3b82f6 - Blue) for interactive elements and accents.
• Typography: Utilize system-stack fonts (Inter, -apple-system, BlinkMacSystemFont) for maximum readability.
• Shadows & Transitions: Apply subtle box-shadow on hover states for tiles. Ensure all transitions are smooth (e.g., transition: all 0.2s ease-in-out).
• No Dark Mode: Strictly maintain a vibrant, light-mode interface to ensure professionalism and clarity.

Technical Constraints & Directives

• Single File Architecture: Bundle all CSS, HTML, and Vanilla JavaScript into one .html file. No build steps (Webpack/Vite) allowed.
• No Persistent Storage: Do not use localStorage, sessionStorage, or cookies. Maintain application state (filtered results, selected category) exclusively in memory variables.
• Performance: Ensure the tool loads instantly. Since thousands of characters exist, lazy-load the grid or render only the visible viewport to maintain 60FPS scrolling.
• Safety: Do not use alert(), confirm(), or prompt(). All notifications or detailed views must be rendered as custom DOM elements.
• Compatibility: Ensure full responsiveness for mobile, tablet, and desktop viewports using CSS Flexbox and Grid. All external assets (e.g., fonts) must be fetched via secure HTTPS CDNs.