Why this site exists
Most password generators ask you to trust a website with the one thing you should never hand over. Many of them are fine. You have no way of telling which. This one is built so the question does not arise: the generator is a piece of JavaScript that runs on your device, and there is no server-side code to send anything to.
How you can check that
Load the page, switch off your internet connection, and keep generating. It works, because nothing about it needs the network. If you want to go further, open your browser’s developer tools, watch the network tab while you press the button, and you will see no requests at all.
How the randomness works
Every character and word comes from crypto.getRandomValues, the browser’s cryptographic random source. We never fall back to Math.random, and we discard values that would introduce a small bias towards certain characters instead of taking the shortcut most tools take. If a browser cannot provide the secure source, the tool refuses to produce anything rather than handing you something that only looks random.
How it is checked
The generation logic lives in one file, separate from the pages, and is covered by automated tests that run on every change. They check that only the characters you selected can appear, that the ambiguous-character filter really filters, that the random draw is not biased, that there is no insecure fallback, and that the entropy table in the article still matches what the code produces. If the code and the writing ever disagree, the tests fail.
Independence and funding
There are no ads, no affiliate links and no sponsors today. If that changes, it will be marked plainly, and nobody will be able to pay us to recommend a password manager or soften a warning.
Who runs this
My name is Marvin Smit, and I publish this site along with a few other small free tools: loan calculator and mortgage calculator. It is a small independent site, not a security company, and I would rather say so than imply otherwise. If something here is wrong, it is mine to fix.
Last reviewed August 12, 2026. Corrections are welcome through the contact page. This is general information, not security advice for your particular situation.