Hi everyone, A few months ago, while we were building AeroSpark, a legal AI product, we ran into a problem. Someone can put text in a document that a person never sees — white on white, a font too small to read, text tucked behind an image — and an AI model reads every word of it. For a legal product, that's serious. If a contract says one thing on the page and something else in hidden text, and the AI follows the hidden text, our markup is wrong and nobody can see why. We looked for a tool that would check files before our AI read them, and couldn't find one. So we built it, and then pulled it out into its own service. HiddenContent.ai checks Word, PDF, Excel, PowerPoint and web pages. It shows you every piece of hidden text, where it sits and how someone hid it, and gives your AI a clean copy to read. It doesn't use an AI to make the call, so the hidden text can't talk its way past the check. We also tell you what we miss. Every technique page on our site says what that check doesn't catch. To try it: See a real result, no signup: hiddencontent.ai/sample Add it to Claude, ChatGPT or Cursor: hiddencontent.ai/start — 20 free pages when you sign in with GitHub, no card And especially for Product Hunt users - 100 free pages when you sign up via this link: hiddencontent.ai/start/?code=PRODUCTHUNT or hiddencontent.ai/?code=PRODUCTHUNT What I'd love to hear from you: What documents do you hand to an AI that you'd want checked first? Where would this need to sit in your work to be useful? If you can hide text in a document and we miss it, tell us. We'll fix it and credit you. Van and Dave

HiddenContent.ai

Find the text in a document your AI reads and you can't see

Find the text in a document your AI reads and you can't see