HiddenContent.ai
Find the text in a document your AI reads and you can't see
This is 1 of 263 launches in markdown editors and documentation tools — see how it stacks up on momentum and crowding →
134 other launches read as similar to this one →
Details
- External ID
- 1261824
- Source
- PH
- Company
- —
- Product
- HiddenContent.ai
- Website domain
- producthunt.com
- Launched
- Oct. 5, 2026
- Cohort
- —
- Upvotes
- 2
- Upvotes percentile
- 0.7747427731504165
- Tags
- Developer Tools, Artificial Intelligence, Security
- Fetched at
- Oct. 5, 2026, 5:01 p.m.
- Updated at
- Oct. 5, 2026, 5:01 p.m.
Description
An MCP/API to check Word, PDF, Excel, PowerPoint and web pages for hidden text before your AI reads it: white text, tiny text, text off the page, invisible characters. Shows exactly what's hidden and where. Add it to Claude, ChatGPT or Cursor. 20 pages free.
Enrichment
- Theme
- markdown editors and documentation tools
- Vertical
- Security
- Function
- Compliance & governance
- Audience
- B2B
- AI stance
- AI-native
- Project type
- Commercial product
- Normalized one-liner
- hidden text detector in documents for prompt injection defense
- Manually corrected
- False
Could you build this?
Partial Detecting hidden prompt injections or zero-point text across Office documents and complex PDFs requires deep low-level document parsing beyond standard text extraction.
What it would actually take: Requires low-level document AST parsers (such as `pdfminer.six` or MuPDF for PDFs, `python-docx`/OpenXML SDK for DOCX, and OpenPyXL for XLSX) to inspect text rendering properties: font size, color matching background RGB values, coordinates outside the media box, and invisible Unicode control characters (like zero-width spaces). The hard part is handling nuances of PDF drawing streams, complex transparency groups, and nested OOXML styles without false positives. Stack would be a Python FastAPI service exposing an MCP/REST API, backed by specialized document rendering libraries.
Competitors
Other products that read as similar to this one — 134 launches clear the similarity bar, closest 8 shown.
Attention rank: #18 of 135 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 315 days after the earliest competitor.
- Detect AI Watermarks · ph · 2026-10-03 · 1 upvotes · similarity 0.62
- TextTrace · ph · 2026-10-05 · 1 upvotes · similarity 0.47
- paperlight · github · 2026-09-26 · 12 upvotes · similarity 0.47
- AI Content Detector · ph · 2026-09-24 · 1 upvotes · similarity 0.47
- Hawaa Hub marketing · ph · 2026-10-01 · 1 upvotes · similarity 0.44
- Robots.txt Editor & Validator · ph · 2026-09-15 · 2 upvotes · similarity 0.44
- Fouine · ph · 2026-09-19 · 1 upvotes · similarity 0.42
- Findrail · ph · 2026-10-03 · 1 upvotes · similarity 0.41
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a compliance & governance tool for Media & entertainment yet.