ShieldFont: A Typeface That Gives AI Scrapers Nonsense While Keeping Pages Readable

Designers Isaque Seneda and Gabriel Abrucio have created ShieldFont, a font designed to block unauthorized AI scraping while keeping webpages readable for humans. The font uses ligatures to swap certain words with nonsensical alternatives in the underlying HTML, but only when the page is rendered onscreen.

As a result, scrapers that download plaintext source code receive altered content, while human visitors see the intended text. The designers describe it as a practical opt-out from unauthorized AI training.