Document security for the AI era
Building a pipeline? Explore the APIKnow what’s really
in your PDF.
A document can look harmless and still influence your AI. Find hidden text, suspicious formatting, and prompt injection signals before you trust it.
See what a hidden attack looks likeFor the resumes, reports, and documents that power your decisions.
Scan a document
PDF / 10 MBDrop your PDF here
Find the signals you can’t see on the page.
Free account required for your own documents
Just exploring? Try a sample.
No signupLook closer
One PDF. Two very different stories.
Illustrative document
Alex Morgan
Product designer
Experience
Designing thoughtful digital products. Working with teams to turn complex problems into clear, useful experiences.
Looks like an ordinary resume.
Turn on “Reveal hidden text” to see the instruction a reader could miss.
Simplified illustration using hidden text from our sample analysis.
Your AI may read more
than you can see.
Tiny text and content outside the page can ask automated systems to favor a candidate. Nelix surfaces those signals so you can review the evidence.
From document to decision
Start with a PDF
Sign in and choose a document up to 10 MB. Or explore a public sample first.
Look beneath the surface
Nelix checks document structure, text, and formatting for hidden signals.
Decide with evidence
Review findings, severity, and locations before using the document in your workflow.
Make the next document a better decision
Give your AI a clearer picture.
Start with a free account. Explore plans as your workflow grows.