Substack Password Requirements and Generator
Password Rules for Substack
Password rules for Substack have not been verified yet. Using default settings — your password will still be strong and secure.
Generate a Password for Substack
Standard mixed-character password with uppercase, lowercase, numbers, and symbols.
or press Space when focused
Reset to defaults
Rules last verified: May 15, 2026
Frequently Asked Questions about Substack
- What are the password requirements for Substack?
- Substack's exact password requirements have not been verified yet. Most services require at least 8 characters with a mix of letters and numbers — the PassTailor generator above will produce a strong, broadly compatible password.
- How long should my Substack password be?
- We recommend at least 16 characters for any account. Substack's exact length limits are not yet verified.
- Does Substack allow special characters in passwords?
- Substack's symbol policy hasn't been confirmed. The generator above defaults to widely-accepted symbols like ! @ # $ % & * to maximize compatibility.
- How do I generate a strong password for Substack?
- Use the password generator on this page — it's already configured to match Substack's rules. Click "Generate Password" and copy the result. For maximum security pick a length of 16 or more.
- Is the PassTailor generator safe to use for Substack?
- Yes. Passwords are generated entirely in your browser using the cryptographically secure Web Crypto API. Nothing is sent to our servers and nothing is stored.
