Base64 Encoder / Decoder
Encode Unicode text to Base64 or decode it back to text.
Developer toolsPassword Generator
Generate strong random passwords with the browser cryptography API.
Processed locally in your browser — your data is not uploaded.Loading your tool…
How to use Password Generator
- Choose a length from 8 to 128 characters.
- Select the character groups and optional ambiguity filter.
- Generate and copy the password; it is never stored.
How is randomness generated?
Metyris uses crypto.getRandomValues() with rejection sampling, never Math.random().
No sign-up is required. The calculation or transformation happens in this browser tab and the result is available immediately.
Good to know
Are generated passwords saved?+
No. They are not placed in localStorage or sessionStorage and disappear when the page is cleared or closed.
What does the entropy estimate mean?+
It estimates the size of the selected random character space. It is guidance, not a guarantee against every attack.
Is my input uploaded?+
No. Processing happens in this browser tab and the tool does not send your input or result to Metyris.