ShieldFont: A Web Font Designed to Deceive AI Scrapers While Preserving Human-Readable Content

ShieldFont is a web font developed by Isaque Seneda and Gabriel Abrucio that displays one set of words to human readers in a browser while embedding different, grammatically consistent words in the page’s source code to mislead AI scrapers. The project launched in October 2025 with backing from the type foundry Playtype. It operates by altering the text retrieved by crawlers without changing the visible content for users. The tool is designed to protect website content from unauthorized AI training data collection. No specific technical implementation details or performance metrics were provided.