AI & Prompt Tools · Free tool
Prompt Injection Detector
Scan user input, web content, or tool outputs for prompt-injection patterns: override attempts, role hijacks, system-prompt forgery, hidden unicode.
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What it does
Pre-filter for untrusted text before you pipe it into an LLM. Scans for known injection patterns: override attempts (“ignore previous”), role hijacks, system-prompt forgery, fake admin/dev modes, hidden zero-width and bidi unicode characters, and more.
Caveat: this is a fast first line of defense, not a complete solution. Real defense layers structured tool-use schemas, explicit confirmation for destructive actions, and treating all tool outputs as untrusted by default.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/prompt-injection-detector" width="100%" height="720" frameborder="0" loading="lazy" title="Prompt Injection Detector" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Paste any text headed for an LLM.
- Read the verdict.
- Treat any high-risk match as a refusal trigger upstream.
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