Category · 5 tools
Password & Security Tools
Generate unbreakable passwords, test your security posture, and create hashes and tokens—all in your browser, nothing saved or uploaded. These tools help you protect accounts and verify cryptographic strength without leaving your device.
All password & security (5)
Generate & Verify Passwords
A strong password is your first line of defense against account compromise. The password generator creates random, complex combinations using uppercase, lowercase, digits, and symbols—you control the length and character types to match any requirement. Need to test an existing password? The strength checker runs client-side algorithms to analyze entropy, pattern vulnerability, and real-world crack time, giving you immediate feedback on whether your current credentials can withstand common attack vectors.
Because everything runs in your browser, no password ever touches a server. You can generate 100 candidate passwords, strength-test your entire list, and close the tab—no trace remains. This matters when you're auditing personal accounts or helping others set up new ones without exposing credentials to any network.
Hashing, Random Strings & OTP Codes
Beyond passwords, you often need cryptographic building blocks: MD5, SHA, or Blake2 hashes for checksums and API requests; random strings for API keys, tokens, or test data; time-based one-time passwords (OTP) for two-factor authentication setup or testing. These tools do the math in your browser—no external API, no hidden logging, no third-party access to your data. Developers use them to prototype security flows; security auditors use them to generate test vectors; anyone can use them to verify file integrity or create disposable tokens.
The OTP generator, in particular, is invaluable for setting up authenticator apps or validating TOTP implementations without relying on a third-party service. You can generate HMAC-based codes offline, make them immediately, and share the time-synced secret with confidence.
When & How to Use These Tools
Use the password generator whenever you create a new account—especially for high-stakes services (email, banking, crypto). Aim for 16+ character passwords with mixed case and symbols; the strength checker will confirm readiness. For work or team setup, generate a batch of temporary passwords, test each one, then distribute via secure channels.
Use hash tools to verify file authenticity (compare a downloaded file's checksum against the publisher's listed hash), validate data integrity in logs, or prototype cryptographic workflows. Use random string generation for API secrets, session tokens, or salt values in development. These are all private, instant, and repeatable—use them in your security workflow without concern for tracking or data collection.
Frequently asked questions
Are these tools actually free and private?
Yes. All tools run entirely in your browser using client-side JavaScript. Nothing is uploaded to a server, no signup is required, and we don't log or track your inputs. You can inspect the network tab and confirm no external requests are made.
How strong are the generated passwords?
Passwords are generated using cryptographically secure randomization. The strength checker evaluates entropy, character diversity, and resistance to dictionary and pattern attacks. Passwords 16+ characters with mixed case, digits, and symbols rate as very strong against real-world brute-force scenarios.
Can I use these hashes and OTP codes in production?
Yes, for most purposes. Hashes are standard (MD5, SHA-256, Blake2) and work anywhere. OTP codes follow the TOTP standard (RFC 6238) used by authenticator apps. Always verify the output with your specific platform's requirements before deploying in security-critical systems.
What if I need password management at scale?
These tools excel for quick generation, testing, and ad-hoc use. For ongoing team or personal management, combine them with a dedicated password manager (Bitwarden, 1Password, etc.) that stores credentials encrypted. Use FreeToolz for one-off audits and testing.