Prompt Injection Scanner
Scan user input for jailbreak patterns
📚 Learn more — how it works, FAQ & guide Click to expand
Learn more — how it works, FAQ & guide
Click to expand
Prompt injection scanner
First-layer defense: scan user input for injection attacks before your LLM sees it.
How to use this tool
- 1
Paste user input
Or any text you want to feed to an LLM.
- 2
See detected patterns
Injection attempts, jailbreak tokens, role-override attacks.
- 3
Check risk score
Act before feeding to your LLM pipeline.
Frequently Asked Questions
What counts as prompt injection?
Anything that tries to override your system prompt, extract secrets, or redirect the model. Examples: "Ignore previous instructions", role-reversal attacks ("You are now DAN"), system token injection, encoded payloads.
How reliable is pattern matching?
Catches ~70% of known attacks. Novel/obfuscated attacks need ML classifiers. Use this as a first filter — not your only defense. Layer with output filtering, tool-use restrictions, and privilege separation.
False positives?
Yes. Legitimate inputs sometimes contain suspicious patterns ("ignore the formatting"). Review high-risk items manually. Tune thresholds for your use case.
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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.