100% client-side · zero data transmission
Secure Random Password & Strong Passphrase Generator
SecureMake is a free secure random password generator and strong passphrase creator that runs entirely in your browser. Use it as a custom random string maker for API keys and secrets, or as a password security checker to test how long an existing password would survive an attack.
Password Security Checker
Paste or type any password below to instantly estimate its entropy and spot common weaknesses. This password security checker runs 100% locally — nothing is sent over the network.
How to Generate a Secure Random Password in 3 Steps
Follow this quick guide to turn SecureMake into your everyday secure random password generator and strong passphrase creator.
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1
Choose your mode
Pick Password for a maximum-entropy random string, or Passphrase for a memorable, easy-to-type sequence of random words.
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2
Tune length & character sets
Drag the length slider and toggle uppercase, numbers, and symbols until the strength meter reports Strong or Very Strong.
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3
Copy & store it safely
Hit Copy and paste it straight into your password manager or the account's password field. Never reuse it anywhere else.
One Tool, Every Random Secret You Need
SecureMake doubles as a general-purpose custom random string maker: dial the length and character sets to generate API keys, database tokens, temporary access codes, or Wi-Fi passwords — not just login passwords.
Because generation happens with the browser's Web Crypto API, results are cryptographically secure and never touch a server, log file, or database. That is what makes SecureMake a genuinely secure random password generator.
- ✓Client-side only — passwords are generated and checked locally, nothing is transmitted or stored.
- ✓Cryptographically secure randomness via
crypto.getRandomValues, notMath.random(). - ✓Live entropy scoring so you always know how strong your strong passphrase creator output really is.
- ✓Built-in password security checker to audit existing credentials before you reuse them.
Frequently Asked Questions
What is password entropy and why does it matter? +
Password entropy measures unpredictability in bits. Each extra bit doubles the number of guesses an attacker needs. A random 12-character password mixing upper case, lower case, numbers, and symbols can exceed 70 bits — computationally infeasible to brute-force today. Short or predictable passwords can fall under 30 bits, crackable in minutes.
Is it safe to generate my password in the browser? +
Yes. SecureMake is 100% client-side. Every password and passphrase is generated locally using the Web Crypto API's cryptographically secure random number generator. Nothing you generate, type, or copy is ever sent to, logged by, or stored on our servers.
Why do common words and patterns make weak passwords? +
Attackers do not guess randomly — they run dictionary and rule-based attacks using common words, names, and leaked password lists, then apply predictable substitutions like "a" to "@". A password built from a dictionary word carries far less real entropy than its length suggests, because the effective search space collapses to the size of the dictionary. Truly random strings or long multi-word passphrases avoid this weakness entirely.
Should I use a random password or a passphrase? +
Both are strong when generated randomly. A random password packs the most entropy per character and suits password manager fields. A passphrase — several random dictionary words joined together — is longer but easier for a human to type or recall, while still reaching high entropy since each random word adds significant bits.
How often should I run a password security checker? +
Check any password you did not generate randomly — especially reused or memorized ones — before using it on an important account. Run a password security checker whenever you set up a new login, and rotate weak or reused credentials immediately, prioritizing email, banking, and password manager master passwords.