API Payload Analyzer — PII & Secrets Scanner
Analyze any JSON payload for sensitive data before logging, sharing, or storing it. Instantly detects PII (emails, phone numbers, dates of birth), credentials (passwords, API keys, JWT tokens, high-entropy secrets), financial data (credit card numbers, bank account fields), and network identifiers (internal IP addresses). Flags each field with a path, detected type, risk level (High / Medium / Low), and actionable reason. Optionally redact all sensitive values in one click. Free and runs entirely in your browser — your data never leaves your device.
How to Use API Payload Analyzer — PII & Secrets Scanner
How to Use the API Payload Analyzer:
Paste Your JSON Payload: Paste any JSON object or array into the input textarea. This can be a request body, response payload, webhook event, or any JSON data you want to inspect. You can also click Load Sample to populate the textarea with a realistic example payload that includes email, phone, password, JWT token, API key, and credit card fields.
Click Analyze: Click the Analyze button to run the detection engine. The tool validates the JSON syntax first — if the JSON is malformed, a parse error is shown with the specific line and column to help you fix it. If valid, the full analysis runs immediately.
Read the Summary Cards: Four cards at the top show: whether the JSON is valid, how many total leaf-level fields were found, how many fields were flagged as sensitive, and the overall risk level (Safe / Low / Medium / High). Overall risk is determined by the highest-severity finding in the payload.
Check the Risk Banner: The banner below the cards shows the overall risk level with color coding — green for safe, blue for low, amber for medium, and red for high. Specific risk messages explain what was found and what action to take, such as rotating credentials or applying PCI DSS handling for card data.
Review the Flagged Fields Table: Each row shows the field path (e.g. auth.token), a truncated value preview, the detected type (e.g. JWT Token, Email Address), the risk level badge, and the reason the field was flagged. Rows are color-coded red for high, amber for medium, and gray for low. High-risk fields are sorted to the top.
Enable Redaction: If the payload contains sensitive fields you want to share safely, toggle Redact sensitive fields. The tool replaces all flagged values with REDACTED and displays the clean JSON output. Click Copy to copy the redacted payload to your clipboard.
Interpret the Results: A clean result (no flagged fields, green Safe banner) means the tool found no known sensitive patterns. This does not guarantee the payload is safe for all contexts — domain-specific sensitive data (proprietary business fields, custom identifiers) may not be detected by the generic rules. Use the results as a first-pass audit, not a compliance guarantee.
Reset for the Next Payload: Click Clear to wipe the input and results, or paste a new JSON payload directly over the existing content.
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