July 16, 2026
Now you see it, bot you don’t
Decoy Font
The anti-AI font is here, and commenters are already asking who it actually helps
TLDR: Decoy Font is a free typeface designed to hide real text from AI by blending fake and real letters into one image. Commenters were split between calling it a clever anti-scraping trick and roasting it as hard to use, bad for accessibility, and possibly not fooling top AI anyway.
A new free font called Decoy Font is making a very online promise: hide what you type from artificial intelligence by baking a fake letter into every real one. Up close, a bot looking at the image is supposed to see the decoy. Step back, squint, or zoom out, and humans can spot the real message. It’s basically an optical illusion turned into a typeface, and yes, the pitch is as dramatic as it sounds: protect your words from scraping, snooping, and overeager machine readers.
But the real show was in the community reaction, where the comments immediately split into Team “clever experiment” and Team “wait… why would I want to make my own writing harder to read?” One of the strongest reactions came from people questioning the basic point of it all. If the font makes you second-guess what you typed, is that privacy or just self-sabotage? Another commenter raised an even messier problem: accessibility. If this thing confuses screen readers, then the anti-AI trick starts looking less like a shield and more like collateral damage.
And then came the classic internet flex: somebody said they tested the example with Claude and ChatGPT, and both read it just fine. Ouch. That instantly turned the vibe from “futuristic defense tool” into “community fact-check pile-on.” A few nerds also compared it to Ghost Font, a related project, while others floated ever more paranoid versions where even the visible letters would be fake. In short: half the crowd saw a smart prank on AI, and the other half saw a font that loses the plot the second anyone actually tries to use it
Key Points
- •Decoy Font is a downloadable TTF typeface that overlays a visible decoy and a hidden message within the same letterforms.
- •The font uses spatial-frequency layering, with thin foreground outlines and blurred low-frequency background shapes, to change what is perceived depending on viewing distance.
- •The article says many AI systems and OCR tools tend to read the foreground text from images, while humans can perceive the hidden message by zooming out or squinting.
- •Decoy Font is based on hybrid-image optical illusion techniques and is derived from DejaVu Sans Mono.
- •The article presents Decoy Font as a Mixfont experiment for anti-AI text obfuscation, while noting it is not guaranteed to defeat advanced models or agent-based analysis.