Hidden content and rendering audits for AI crawlers
What your page shows in a browser and what it contains in its source are not the same thing. AI tools read the source. SynthTrail audits the hidden layer: what sits in your HTML, comments and public files that visitors never see.
$9.99 a month. No contract. Cancel any time.
What counts as hidden content
Page comments, hidden form fields, values written into scripts, tokens stored in the browser, cookies readable by scripts and files left in public folders. None of it appears on screen, and all of it is readable by an agent.
What it does not claim
SynthTrail audits what is exposed in the page and in common public paths. It does not compare how your site renders for different crawlers, and it does not test whether a search engine has indexed a given page. Treat it as a hidden-content and exposure audit.
A routine you do not have to remember
Checks run from visitors' browsers, at most once a day per browser, and new findings appear in your dashboard with a fix. Run one on demand with ?synthtrail_test=1.
Hidden things it surfaces
- Comments that mention passwords or tokens
- Hidden fields that hold secrets
- Login tokens in cookies or browser storage
- Insecure http content on secure pages
Follow the trail on your own site
Paste one snippet and see the synthetic visitors that use your site. Card details are entered on Stripe, never on this site.
More from SynthTrail
- Understand how RAG crawlers retrieve your content
- What to look for in AI agent tracking software
- Bot management versus synthetic traffic auditing
- Server-side versus client-side synthetic visitor verification
- AI crawler and agent user-agent directory
- AI agent access audit checklist for webmasters and CTOs
- All guides