ascii-image-to-ascii

When to use this skill

CRITICAL TRIGGER RULE

• Use this skill ONLY when the user explicitly mentions the exact skill name: ascii-image-to-ascii.

Trigger phrases include:

• "ascii-image-to-ascii"
• "use ascii-image-to-ascii"
• "Use ascii-image-to-ascii to convert images to ASCII art"
• "Use ascii-image-to-ascii to generate two versions: readability-first and detail-first"

Boundary

• Default output is ASCII-only; ANSI coloring is optional.
• The bundled script is for local conversion/verification only. Do not fetch/upload images on the user’s behalf.
• Always give pre-processing advice (crop subject, raise contrast, simplify background) before generating the final ASCII art.

How to use this skill

Inputs

• imagePath (local path, required)
• width (default 100; common: 80/100/120)
• charset (default .:-=+*#%@, from light to dark)
• mode (readable | detail; if outputting both, this can be ignored)
• background (light | dark | unknown, default unknown)
• colorMode (none | ansi256, default none)

Outputs (required)

• asciiReadable: readable-first (less noise, clearer silhouette)
• asciiDetail: detail-first (more levels, richer texture)
• paramsGuide: recommended width/charset + pre-processing tips
• pitfalls: 3-5 common failure modes with fixes

Steps

1. Pre-processing advice (required):
   • Crop the subject, remove irrelevant background
   • Increase contrast to reduce gradient noise
   • Target width usually 80–120 columns
2. Charset + mapping direction:
   • Space is the lightest, @ is the darkest (or invert consistently)
3. Generate two variants:
   • readable: fewer levels (less noise)
   • detail: more levels (more texture)
4. Optional ANSI:
   • Use color only as a hint; keep the silhouette readable
   • Always provide a no-color fallback

Script

• scripts/image_to_ascii.py
  • Requires Python + Pillow (pip install pillow)
  • Supports: readable/detail variants, optional --ansi256

Examples

• examples/readable-vs-detail.md

Quality checklist

1. Lines are consistent and <= width
2. The readable variant must preserve the main silhouette
3. No trailing spaces (copy/paste safe)

Keywords

English: ascii-image-to-ascii, image to ascii, ascii art, terminal preview, charset, grayscale, dithering, ansi Chinese: ascii-image-to-ascii, image to ASCII art, ASCII art, terminal preview, character set, grayscale mapping, denoising, ANSI color

Common Pitfalls (Gotchas)

1. Version Compatibility: Pay attention to compatibility between framework versions and dependency libraries; APIs may differ across versions
2. Configuration File Format: Configuration file format errors are the most common issue; it is recommended to use your editor's syntax checking
3. Environment Variables: Ensure all necessary environment variables are set correctly, and do not hardcode sensitive information
4. Dependency Conflicts: When multiple versions coexist, watch out for dependency conflicts; use a lock file to pin versions
5. Performance Pitfalls: Pay attention to performance optimization in large-data-volume scenarios, and avoid common problems such as N+1 queries

Usage Workflow

Step 1: Environment Preparation

Ensure the development environment has the necessary dependencies and tools installed.

Step 2: Configuration Initialization

Perform basic configuration according to project requirements.

Step 3: Using Core Features

Implement the core functionality according to the example code.

Step 4: Test Verification

Run tests to ensure the functionality works properly.

Step 5: Deployment and Launch

After development is complete, proceed with deployment and monitoring.