We do not store your data. All processing happens in your browser.

Static + Browser-Only

Mask Postman Collections Online

Paste a Postman collection JSON file and mask common sensitive fields in your browser before sharing it with AI tools, tickets, chats, or documentation.

All processing happens locally in your browser. No server processing required.

Input

Raw Postman collection

Tip: paste text or drag and drop a file here.

Paste or drag and drop a file, then run the tool.

Output

Masked Postman collection

Masked payload will appear here

Use Cases

Why use a Postman collection masking tool?

Use this tool when customer or system data needs to be reviewed, shared, or pasted into prompts, tickets, chats, documents, or vendor workflows without exposing raw personal information first.

  • Mask sensitive JSON fields before sharing payloads externally
  • Redact tokens, secrets, card data, emails, phone numbers, and IDs
  • Keep masking local to the browser instead of sending raw payloads to a backend
  • Useful for support logs, QA payloads, troubleshooting, vendor reviews, and AI prompt preparation

Masking Logic

How to mask sensitive values in Postman collections

Mask Payload checks common sensitive field names such as email, phone, clientSecret, accessToken, and cardNumber, then applies pattern-based masking for values such as email addresses and phone numbers embedded in plain text.

  • Field-based masking for common sensitive keys in structured JSON
  • Pattern-based masking for values embedded in strings
  • Pretty-print and copy/download options for clean handoff

Privacy Detail

Does this Postman collection masking tool upload data?

This tool runs as a static browser page. It parses and masks JSON in client-side JavaScript in the current tab. No form submission, fetch request, XMLHttpRequest, or masking API call is used during the masking flow.

  • No form submission is used for the masking flow.
  • No fetch, XMLHttpRequest, or API call runs during masking.
  • The page uses local JavaScript logic, including JSON.parse() and regular expressions.
  • The payload is only written back to the output field unless you copy or download it yourself.
  • The masking flow does not store the payload in browser local storage.

FAQ

Who should use a Postman collection sanitizer?

Does this tool upload JSON anywhere?

No. The masking runs entirely in the browser on the current page.

Can I add custom masking fields?

Yes. Add custom field names such as `eventId`, `renewalDate`, or `internalNote` and mask again.

Who is this tool for?

Mask Payload is for engineers, support teams, QA analysts, operations teams, analytics teams, and compliance workflows that need to review or share structured JSON more safely.

Why Postman collection masking matters before sharing

Postman collections often bundle headers, bearer tokens, environment variables, test data, and request bodies into a single file. That makes them useful for collaboration, but also easy to overshare.

A browser-only Postman masker helps teams clean up collections before sending them to vendors, support teams, or AI tools while keeping the request structure readable.

Examples

Example input and output

These short examples show the kind of input this page is built for and the kind of cleaned result you can expect before sharing data externally.

Example Input Sample data before masking or extraction 
{"variable":[{"key":"apiKey","value":"sk-prod-demo-token"}],"item":[{"name":"Get Customer"}]}
Example Output Sanitized or extracted result 
{"variable":[{"key":"apiKey","value":"****"}],"item":[{"name":"Get Customer"}]}

Tool Directory

Browse masking tools by category

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