security.txt Generator — Create and Validate RFC 9116 Disclosure Files
Generate a well-formed /.well-known/security.txt file for your website. Fill in your contact email, security policy URL, PGP encryption key, acknowledgments page, and expiry date to produce an RFC 9116 compliant security.txt ready to deploy.
How to Use security.txt Generator — Create and Validate RFC 9116 Disclosure Files
How to Use the Security.txt Generator:
Choose a Preset (optional): Start with Minimal (required fields only), Standard (contact + policy + acknowledgments), or Full (all RFC 9116 directives) to pre-fill the form.
Contact (required): Add at least one contact address where security researchers should report vulnerabilities. This can be a
mailto:email address or anhttps://URL pointing to a report form. Click "Add contact" to include multiple channels.Expires (required): Set the date after which this file should be considered stale. RFC 9116 mandates an expiry date — renew it at least annually. The tool formats it in ISO 8601 (e.g., 2026-12-31T23:59:00.000Z).
Policy: Link to your Vulnerability Disclosure Policy (VDP) or bug bounty policy page. This tells researchers the rules of engagement.
Encryption: Provide a URL to your PGP public key so researchers can encrypt sensitive vulnerability reports before sending them to your contact email.
Acknowledgments: Link to a hall-of-fame or thanks page that credits researchers who have responsibly disclosed vulnerabilities.
Preferred-Languages: List BCP 47 language tags (e.g.,
en, fr, de) to indicate which languages you can receive reports in.Canonical: Set the canonical URL where this file is hosted. Useful if the same organization runs multiple domains.
Copy / Download: Click "Copy" to copy the generated content or "Download" to save it as security.txt. Deploy it at
https://yourdomain.com/.well-known/security.txtserved over HTTPS.
Frequently Asked Questions
Most Viewed Tools
Screen Size Converter — Diagonal Dimension Tool
Calculate screen width and height from diagonal size and aspect ratio. Convert between inches and centimeters for displays, TVs, and monitors with instant dimension calculations.
Use Tool →TOTP Code Generator — 2FA Testing Tool
Generate time-based one-time passwords from a TOTP secret key. Enter your base32 secret, choose a period and digit length, and get the current and next codes with a live countdown timer. Useful for testing and debugging 2FA integrations.
Use Tool →JSON to Zod — Schema Generator
Generate Zod validation schema code from a JSON sample object. Infers z.string(), z.number(), z.boolean(), z.array(), z.object(), and z.null() types automatically. Handles nested objects, arrays of objects with optional field detection, and outputs copy-ready TypeScript with import and z.infer type alias.
Use Tool →JSONL Formatter — Line-by-Line Validator
Format, validate, and inspect JSON Lines (JSONL) and NDJSON files. Validates each line individually, reports parse errors by line number, outputs compact JSONL or a pretty-print preview, and lets you download the cleaned file.
Use Tool →TLS Cipher Suite Checker — Strength Analyzer
Check TLS protocol version compatibility and cipher suite strength ratings against current best practices. Supports IANA and OpenSSL cipher names — rates each suite as Strong, Weak, or Deprecated and explains why.
Use Tool →Password Entropy Calculator — Crack Time Estimator
Calculate the information-theoretic bit entropy of any password or API key. Detects character set pools automatically, shows the total number of possible combinations, and estimates crack time across five attack scenarios from rate-limited web logins to GPU cracking clusters.
Use Tool →Secret Scanner — API Key & Credential Detector
Scan pasted text, code, or config files for accidentally exposed API keys, tokens, passwords, and private keys. Detects 50+ secret types across AWS, GitHub, Stripe, OpenAI, and more — all client-side, nothing leaves your browser.
Use Tool →DPI Calculator — Print Resolution Tool
Calculate DPI (dots per inch), image dimensions, and print sizes. Convert between pixels and physical dimensions for printing and displays.
Use Tool →Related Privacy & Security Tools
API Key Hasher — Secure Storage Tool
Hash API keys using SHA-256, SHA-512, or PBKDF2 before storing them in your database. Generates a Node.js verification snippet and shows the recommended storage format — all 100% client-side using the Web Crypto API.
Use Tool →PGP Key Generator — Browser-Based Key Pair Tool
Generate PGP public and private key pairs for email encryption and code signing. Supports ECC (Curve25519) and RSA up to 4096-bit. Entirely browser-side — keys never leave your device.
Use Tool →TOTP Code Generator — 2FA Testing Tool
Generate time-based one-time passwords from a TOTP secret key. Enter your base32 secret, choose a period and digit length, and get the current and next codes with a live countdown timer. Useful for testing and debugging 2FA integrations.
Use Tool →OAuth 2.0 Scope Builder — Permission String Tool
Build and decode OAuth 2.0 scope strings for Google, GitHub, Stripe, and custom providers. Toggle permissions with risk indicators, generate ready-to-use scope strings, and decode existing scope strings to understand what access they grant.
Use Tool →TLS Cipher Suite Checker — Strength Analyzer
Check TLS protocol version compatibility and cipher suite strength ratings against current best practices. Supports IANA and OpenSSL cipher names — rates each suite as Strong, Weak, or Deprecated and explains why.
Use Tool →IP Allowlist Generator — Firewall Rule Builder
Generate ready-to-paste IP allowlist and blocklist rules for nginx, Apache, iptables, UFW, and AWS Security Groups. Enter IP addresses or CIDR ranges, select your target platform, and get production-ready firewall config instantly.
Use Tool →Password Entropy Calculator — Crack Time Estimator
Calculate the information-theoretic bit entropy of any password or API key. Detects character set pools automatically, shows the total number of possible combinations, and estimates crack time across five attack scenarios from rate-limited web logins to GPU cracking clusters.
Use Tool →Content Security Policy Generator — XSS Shield Builder
Build Content Security Policy headers interactively. Toggle directives like script-src, style-src, and img-src, select allowed source tokens, and add custom origins. Instantly outputs your CSP as an HTTP header, meta tag, Nginx directive, or Apache header.
Use Tool →Share Your Feedback
Help us improve this tool by sharing your experience