Escape Sequence Visualizer

A simple web tool that helps visualize escape sequences in any text, built with Hono framework.

Features

  • Side-by-side interface with input and output panels
  • Real-time conversion of escape sequences to their actual characters
  • Works with any text containing escape sequences (not limited to JSON-compatible strings)
  • Handles a wide range of escape sequences:
    • \n (newline)
    • \t (tab)
    • \r (carriage return)
    • \\ (backslash)
    • \" (double quote)
    • \' (single quote)
    • \b (backspace)
    • \f (form feed)
    • \v (vertical tab)
    • \0 (null character)
    • \xHH (hex escape)
    • \uHHHH (unicode escape)
  • Responsive design that works on mobile and desktop
  • Built with Hono framework following recommended project structure

Project Structure

├── backend/
│   └── index.ts       # Main Hono app entry point
├── frontend/
│   ├── index.html     # Main HTML template
│   └── index.js       # Frontend JavaScript
├── shared/
│   └── utils.ts       # Shared types and utilities
└── README.md

How to Use

  1. Enter any text with escape sequences in the left panel
  2. See the unescaped result in the right panel in real-time
  3. Copy the visualized output as needed

Implementation Details

  • Backend uses Hono framework to serve the frontend files
  • Frontend uses vanilla JavaScript with custom escape sequence handling
  • The tool uses regular expressions to replace escape sequences with their actual characters
  • Works with any text, including code snippets, TypeScript definitions, etc.

Examples

Input: Hello\nWorld Output:

Hello
World

Input: Tab:\tIndented Output: Tab: Indented

Input: TypeScript definitions with escape sequences (like \n for newlines) will be properly rendered with actual newlines in the output panel.