UtilToolkits2025-12-11
TL;DR — Use the free Password Generator to create truly random 20+ character passwords in one click, then verify them with the Password Strength Checker. Both run entirely in your browser — your passwords never touch a server. Developers needing unguessable identifiers should also bookmark the UUID Generator.
The 2024 Have I Been Pwned dataset crossed 13 billion leaked credentials. The pattern behind almost every account takeover is the same: a password that was either weak, reused, or both. Sophisticated zero-days make headlines, but the real attack on you and your users is a credential-stuffing bot trying yesterday’s breach dump against today’s login page.
Humans are also genuinely bad at randomness. "Summer2024!" feels strong because it satisfies a complexity meter, but every cracking dictionary has season+year+symbol covered. The only reliable way to defeat a brute-force or dictionary attack is to delegate password creation to something that is random.
qwerty), substitutions (P@ssw0rd), names + numbers — falls to modern wordlists in seconds.Weak : Sunshine2024! (~28 bits — minutes to crack)
Decent : tH3-r3d-c@t-runs (~70 bits — days)
Strong : 4q!Lz9#mVx&7TpBn8eRy (~131 bits — effectively forever)The Password Strength Checker estimates the entropy of any password and tells you how long a modern GPU rig would need to crack it. Like everything else here it runs locally — nothing is logged, nothing is sent anywhere. If the verdict is anything short of "very strong," replace it.
Application security isn’t only about user passwords. Session tokens, password-reset links, invite codes, and database primary keys all need to be unguessable. Sequential integer IDs leak how many users you have and enable enumeration attacks. Use the UUID Generator to produce RFC 4122 v4 identifiers for tokens, keys, and test data — 128 bits of randomness per ID.
Many "free password generator" sites send your generated string to their server for logging, analytics, or worse. That defeats the purpose. Every tool linked from this page runs client-side using your browser’s built-in crypto.getRandomValues() API — the same source of randomness your operating system uses for cryptographic keys. Open DevTools, watch the Network tab, generate a password: zero requests.
Minimum 16 characters for low-value accounts, 20+ for email, banking, password manager master keys, and anything storing payment info. NIST’s 2024 guidance treats length as the primary strength factor.
No. NIST officially dropped that recommendation — forced rotation pushes users toward predictable variants (Password1 → Password2). Rotate only when a breach is suspected or confirmed.
If the four words are truly random from a large wordlist (Diceware-style), yes — around 50+ bits of entropy. If they’re a memorable phrase you came up with, no — those are heavily pattern-matched.
In a reputable password manager (Bitwarden, 1Password, KeePass). Never in a text file, sticky note, or browser autofill without a master password.
No — it adds a second layer, but SIM-swap and phishing kits regularly defeat SMS 2FA. Pair strong unique passwords with an authenticator app or a hardware key for real defense-in-depth.