What Is ShieldFont? The Open-Source Anti-AI Scraping Font
ShieldFont is an experimental anti-AI scraping system designed to make large-scale web scraping more difficult by separating what humans see from what automated scrapers extract. Instead of blocking bots outright, it uses OpenType font substitutions to display the intended text to readers while presenting altered underlying words to basic scraping tools. This approach reduces the usefulness of scraped content, making AI data collection more expensive and less reliable without disrupting the reading experience. Unlike traditional anti-scraping methods such as robots.txt files or web application firewalls, ShieldFont focuses on degrading the quality of scraped data rather than preventing access. Although it can significantly alter machine-readable text, it is not foolproof, as advanced AI scrapers can still bypass it using browser rendering, OCR, computer vision, or reverse-engineering techniques. It also comes with trade-offs, including potential issues with SEO, accessibility, tr...