Secure Random Password Generator
Generate 1–20 passwords, each 8–128 characters, using Web Crypto and unbiased sampling. Select all symbols, alphanumeric characters, or an alphabet omitting common lookalikes.
How to use Secure Random Password Generator
- Enter “Password length (8–128)”, using the units and limits shown in its label.
- Enter “Number of passwords (1–20)”, using the units and limits shown in its label.
- Choose the appropriate “Alphabet” option for your task.
- Select Calculate or Process. Review the result and any validation message before copying or downloading available output. Reset clears the result and restores the starting inputs.
Method & assumptions
Draw cryptographic 32-bit integers; reject values outside an even alphabet multiple; map accepted values to characters uniformly.
Worked example
Length 20 generates a new 20-character random password; no fixed example password should be reused.
Results and projections are informational estimates, not financial, medical, legal, tax, or property advice. Check assumptions, units, rounding, and local requirements independently. Investment illustrations do not guarantee returns. Keep original files and check transformed output before use.
Questions, answered
Will every password include every character class?
No. Sampling is uniform over the selected alphabet, without forced class rules. Use a password manager and meet the destination policy. Web Crypto requires a supported secure browser context; there is no Math.random fallback.
Does this send my input to a server?
No. This engine processes input locally without network requests. The surrounding website may have its own analytics or scripts; avoid entering sensitive material on an untrusted site. Text fields accept at most 1,000,000 UTF-16 units unless a smaller field limit is stated.