PureTools
Security tools
Free password generator, strong, random and completely private
Generate strong passwords and verify file integrity directly in your browser. Choose length, character types and symbol rules, see the strength score and estimated time to crack before copying. Generate hashes from text or files to confirm nothing has been altered. Every value is created on your device and never sent anywhere, no account, no cloud sync, nothing stored.
Security utilities that run entirely on your device
Passwords and hashes are security-critical values that should never pass through a third-party server. Generating or computing them locally, in the browser, eliminates the risk of interception, logging or data collection entirely.
What makes a strong password
Most passwords people choose, even ones they consider strong, follow predictable patterns: words with letter substitutions, names with trailing numbers, keyboard sequences. A truly random password has no predictable structure and cannot be guessed from personal information. Length is the single most impactful factor: each additional character multiplies the difficulty of a brute-force attempt exponentially. Character set diversity, mixing uppercase, lowercase, digits and symbols, adds further entropy.
Hash functions and data integrity
A hash function converts any input, text, a file, a password, into a fixed-length fingerprint. The same input always produces the same output, and any change to the input produces a completely different result. This makes hashes useful for verifying that a downloaded file matches its published checksum, confirming data has not been altered in transit, and producing test values in development workflows.
Nothing leaves your browser
Every password and hash is generated locally and never transmitted, not to PureTools, and not to any external service. No history is recorded, no session is logged and closing the tab clears everything.