Ascii Ansi Colorizer

Outputs (required)

• coloredText: ANSI-colored output
• plainTextFallback: no-color fallback (identical content, no ANSI)
• compatNotes: copy/paste and redirection guidance (NO_COLOR / --no-color suggestions)

Steps

1. Pick colorDepth (default: ansi256).
2. Choose a stable coloring strategy:
   • Column-wise gradients (leftToRight) are usually the safest
   • Colorize non-space characters only
3. Output both coloredText and plainTextFallback.
4. Provide no-color guidance (semantic suggestions): NO_COLOR / --no-color.

Output Format

Outputs should be structured as three distinct text blocks:

coloredText:
  \033[38;5;33mH\033[38;5;34me\033[38;5;35ml\033[38;5;36ml\033[38;5;37mo\033[0m

plainTextFallback:
  Hello

compatNotes:
  - Respect NO_COLOR env var: if set, output plainTextFallback only
  - Support --no-color flag for CLI tools
  - Pipe/redirect: detect non-TTY and fall back to plain text

Workflow

1. Receive text input and validate it is non-empty
2. Select colorDepth (default ansi256) and palette
3. Apply coloring to visible characters only (skip spaces to preserve alignment)
4. Generate both coloredText and plainTextFallback
5. Validate: Strip ANSI codes from coloredText and compare with plainTextFallback — they must match

Script

• scripts/colorize.py: apply ANSI 256 gradient or rainbow to stdin

Examples

• examples/gradient.md

Quality checklist

1. Removing ANSI keeps the same readable content (plainTextFallback).
2. Alignment does not change after coloring.
3. Colors should not overpower the informational lines.

Keywords

English: ascii-ansi-colorizer, ansi, color, gradient, rainbow, terminal, no-color, plain text, ascii 中文: ascii-ansi-colorizer, ANSI, 上色, 渐变, 彩虹, 终端, 无色回退, 纯文本, ASCII