Generate high-entropy, human-memorable multi-word passphrases and 256-bit API secrets powered by your device’s cryptographic random number generator.
Step-by-Step Client-Side Workflow
Choose Passphrase Word Count: Select 4 to 10 words and customize separators, capitalization, and appended digits.
Sample Hardware CSPRNG Entropy: Click Regenerate to draw unbiased random indices from `window.crypto.getRandomValues()`.
Verify Entropy Bits & Copy: Confirm 75–128+ bits of entropy before copying to your password manager.
Why Use VaultTools Zero-Upload Architecture
Immune to Math.random() Predictability: Never rely on predictable PRNGs. Every character is backed by OS-level cryptographic entropy.
Easy to Type, Impossible to Brute-Force: A 5-word passphrase with a number delivers 80+ bits of entropy while remaining effortless to remember.
100% Offline Strength Auditing: Test the entropy of your existing passwords without typing them into an online form that could log keystrokes.
Frequently Asked Questions
Why are multi-word Diceware passphrases easier to use and harder to crack?
A 6-word random passphrase like `cobalt-velvet-anchor-meadow-quartz-74` is effortless for a human to type and remember, yet packs ~75+ bits of entropy that would take an offline GPU cluster centuries to brute-force.
How many bits of entropy makes a password secure in 2026?
For everyday accounts, aim for at least 65–75 bits of entropy. For master password managers, crypto wallets, and production API secrets, 90 to 128+ bits is recommended.