Link Icon Test

This page is used to manually verify the external link icon system.

Expected behavior:

• known organizations should render stable short labels or custom icons
• known domains should render their mapped suffixes
• file links like PDF and ZIP should prefer file-type labels
• unknown domains should fall back to an automatically generated short suffix
• internal links such as index should not show any external-link suffix

Organization Rules

• GitHub
• Quartz
• Obsidian
• Wikipedia
• Wikimedia Commons
• YouTube
• OpenAI
• Anthropic
• DeepMind
• W3C
• Medium
• AWS Architecture Center
• Microsoft Learn

Domain Rules

• Google Docs
• Google Scholar
• OSS Insight
• Next OSS Insight
• Zhihu
• Zhihu Redirect
• CSDN
• Cnblogs

File Type Rules

• Sample PDF
• Sample ZIP
• Sample JSON
• Sample CSV
• Sample PNG
• Sample MP3
• Sample MP4
• Sample JavaScript

Fallback Rules

• Brookings
• The Economist
• Boing Boing
• Know Your Meme
• Worrydream
• Data Engineering Wiki
• Visual Paradigm
• Ververica

Mixed Cases

• GitHub repo archive ZIP
• DeepMind PDF
• Wikipedia image file
• OpenAI API docs
• Unknown PDF

Internal Control

• Internal link should not show any external suffix
• Another internal link without external icon