Processing boundary
Input is processed only in the active browser tab's memory and is not sent to a ByteQuant server.
52
Code & file security
Code Security Pre-Scan
Scans code in a time-bounded Web Worker with explainable regex rules and reports eval, innerHTML, shell commands, SQL concatenation, weak hashes, and possible secrets with line numbers. It cannot understand full builds or data flow and does not replace SAST or expert review.
✓ Free✓ No account✓ In-browser
QUICK ANSWER
What does this tool do?
Find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code. Code Security Pre-Scan limitation: Code is not executed, and no finding does not prove the absence of vulnerabilities.
- Input
- For Code Security Pre-Scan, provide synthetic or minimized code, configuration, identifiers, or file content you are authorized to review. The requested outcome is to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code.
- Output
- When Code Security Pre-Scan finishes, it returns evidence locations, severity, false-positive considerations, and the next verification action, organised around the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code.
- Method
- Code Security Pre-Scan uses this disclosed method to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code: content is not executed; only explainable static patterns and bounded browser operations are applied.
- Verification
- Before accepting a Code Security Pre-Scan result, complete manual review at the source location and independent verification with an appropriate professional security tool or authorized process; the evidence should support the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code.
TOOL-SPECIFIC RUN PLAN
Go to the workbench ↓See exactly what Code Security Pre-Scan expects and returns
Code Security Pre-Scan uses the contract below to complete “Pull-request pre-checks: local analysis with Code Security Pre-Scan” in particular. Confirm the shape with the example first; use real data only when the fields and expected result are clear.
- Use this shape
1 · Prepare the input
Code Security Pre-Scan — For Code Security Pre-Scan, provide synthetic or minimized code, configuration, identifiers, or file content you are authorized to review. The requested outcome is to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code.. Paste only source code you are authorized to inspect. Expected format for Code Security Pre-Scan: For Code Security Pre-Scan, provide synthetic or minimized code, configuration, identifiers, or file content you are authorized to review. The requested outcome is to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code..
- Method applied
2 · Run the operation
Code Security Pre-Scan — Code Security Pre-Scan uses this disclosed method to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code: content is not executed; only explainable static patterns and bounded browser operations are applied. Choose a language and run the local time-bounded scan. Code Security Pre-Scan applies this method: Code Security Pre-Scan uses this disclosed method to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code: content is not executed; only explainable static patterns and bounded browser operations are applied.
- Expected output
3 · Read the result
Code Security Pre-Scan — When Code Security Pre-Scan finishes, it returns evidence locations, severity, false-positive considerations, and the next verification action, organised around the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code.. Secret discovery in snippets: validating the Code Security Pre-Scan output
- Acceptance check
4 · Accept or correct
Code Security Pre-Scan — Before accepting a Code Security Pre-Scan result, complete manual review at the source location and independent verification with an appropriate professional security tool or authorized process; the evidence should support the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code.. Verify each finding against data flow and context; rotate exposed secrets immediately. Acceptance check for Code Security Pre-Scan: Before accepting a Code Security Pre-Scan result, complete manual review at the source location and independent verification with an appropriate professional security tool or authorized process; the evidence should support the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code..
A tool-specific example path
1. Pull-request pre-checks: local analysis with Code Security Pre-Scan → 2. Secret discovery in snippets: validating the Code Security Pre-Scan output → 3. Preparing for security review: checking the limits of Code Security Pre-Scan
Tip: when an example-data button is available, run it first. Do not use the result in a live process unless it passes the acceptance check.
Result
Your result will appear here.
Persistent storage
Input and output are not stored. The optional usage counter keeps only tool identity and count, never content.
Verification
Output comes from disclosed rules or browser APIs and needs independent review before high-impact use.
APPLICATION AND DECISION GUIDE
✓ REVIEWEDUse Code Security Pre-Scan with the right input, acceptance check, and next step
Scans code in a time-bounded Web Worker with explainable regex rules and reports eval, innerHTML, shell commands, SQL concatenation, weak hashes, and possible secrets with line numbers. It cannot understand full builds or data flow and does not replace SAST or expert review. The notes below help you do more than produce a result: they show how to test whether Code Security Pre-Scan fits the task and when to stop before a weak output travels further.
Code Security Pre-Scan uses this disclosed method to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code: content is not executed; only explainable static patterns and bounded browser operations are applied. Code is not executed; only static patterns and contracts are inspected. No finding does not prove the absence of a vulnerability.
For Code Security Pre-Scan, provide synthetic or minimized code, configuration, identifiers, or file content you are authorized to review. The requested outcome is to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code. Confirm the shape first with a small example containing no personal data.
When Code Security Pre-Scan finishes, it returns evidence locations, severity, false-positive considerations, and the next verification action, organised around the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code. — Before accepting a Code Security Pre-Scan result, complete manual review at the source location and independent verification with an appropriate professional security tool or authorized process; the evidence should support the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code.
Three practical use cases
Pull-request pre-checks: local analysis with Code Security Pre-Scan
Action: Start with a small synthetic fixture that represents this need. Expected input: For Code Security Pre-Scan, provide synthetic or minimized code, configuration, identifiers, or file content you are authorized to review. The requested outcome is to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code..
Acceptance signal: The fixture should reproduce “Pull-request pre-checks: local analysis with Code Security Pre-Scan” without real personal data.
Secret discovery in snippets: validating the Code Security Pre-Scan output
Action: Keep that fixture unchanged and run the on-device method: Code Security Pre-Scan uses this disclosed method to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code: content is not executed; only explainable static patterns and bounded browser operations are applied.
Acceptance signal: Identical input should return the same result, with no network or file action assumed beyond the disclosed method.
Preparing for security review: checking the limits of Code Security Pre-Scan
Action: Retain the output record before moving it into the target workflow: When Code Security Pre-Scan finishes, it returns evidence locations, severity, false-positive considerations, and the next verification action, organised around the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code..
Acceptance signal: Acceptance requires Before accepting a Code Security Pre-Scan result, complete manual review at the source location and independent verification with an appropriate professional security tool or authorized process; the evidence should support the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code.; otherwise do not move the result forward.
Do not use the result for a decision beyond this boundary: Code Security Pre-Scan limitation: Code is not executed, and no finding does not prove the absence of vulnerabilities.
Move the result to another tool or live process only after Before accepting a Code Security Pre-Scan result, complete manual review at the source location and independent verification with an appropriate professional security tool or authorized process; the evidence should support the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code.. Keep this limit visible in the decision record: Code Security Pre-Scan limitation: Code is not executed, and no finding does not prove the absence of vulnerabilities.
A result in three steps
- 01
Paste only source code you are authorized to inspect. Expected format for Code Security Pre-Scan: For Code Security Pre-Scan, provide synthetic or minimized code, configuration, identifiers, or file content you are authorized to review. The requested outcome is to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code..
- 02
Choose a language and run the local time-bounded scan. Code Security Pre-Scan applies this method: Code Security Pre-Scan uses this disclosed method to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code: content is not executed; only explainable static patterns and bounded browser operations are applied.
- 03
Verify each finding against data flow and context; rotate exposed secrets immediately. Acceptance check for Code Security Pre-Scan: Before accepting a Code Security Pre-Scan result, complete manual review at the source location and independent verification with an appropriate professional security tool or authorized process; the evidence should support the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code..
When is this tool useful?
- ✓ Pull-request pre-checks: local analysis with Code Security Pre-Scan
- ✓ Secret discovery in snippets: validating the Code Security Pre-Scan output
- ✓ Preparing for security review: checking the limits of Code Security Pre-Scan
Tool-specific limitation
Code Security Pre-Scan limitation: Code is not executed, and no finding does not prove the absence of vulnerabilities.
LEARN THE WORKFLOW
Guides for this tool
How to Security-Audit Open-Source Browser Tools
A practical checklist for validating privacy claims through source, dependencies, network requests, CSP, and history.
Read guide →How to Combine Code Security Pre-Scans, SAST, and Manual Review
Turn fast regex findings into a sound security workflow with data-flow analysis, dependency checks, SAST, and expert review.
Read guide →ABOUT THIS TOOL
Frequently asked questions
What input does Code Security Pre-Scan accept?+
For Code Security Pre-Scan, provide synthetic or minimized code, configuration, identifiers, or file content you are authorized to review. The requested outcome is to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code. Paste only source code you are authorized to inspect. Expected format for Code Security Pre-Scan: For Code Security Pre-Scan, provide synthetic or minimized code, configuration, identifiers, or file content you are authorized to review. The requested outcome is to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code..
What does Code Security Pre-Scan return?+
When Code Security Pre-Scan finishes, it returns evidence locations, severity, false-positive considerations, and the next verification action, organised around the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code. Code Security Pre-Scan uses this disclosed method to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code: content is not executed; only explainable static patterns and bounded browser operations are applied.
How should I validate Code Security Pre-Scan output?+
For “Pull-request pre-checks: local analysis with Code Security Pre-Scan”, first complete “Choose a language and run the local time-bounded scan. Code Security Pre-Scan applies this method: Code Security Pre-Scan uses this disclosed method to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code: content is not executed; only explainable static patterns and bounded browser operations are applied.”, then apply this check: “Verify each finding against data flow and context; rotate exposed secrets immediately. Acceptance check for Code Security Pre-Scan: Before accepting a Code Security Pre-Scan result, complete manual review at the source location and independent verification with an appropriate professional security tool or authorized process; the evidence should support the goal to find risky APIs, dangerous sinks, weak crypto, and embedded-secret patterns locally in source code..”. Do not use a consequential result before a second test with boundary or malformed input.
Does this tool send or store input on a server?+
No. Processing runs in this browser tab and tool input is not persisted. Copying, downloading, or transferring happens only when you choose it.