3 tools
Generators that produce values only you ever see
Passwords, UUIDs and placeholder copy, produced on demand by your own browser. Nothing generated here is transmitted, logged or stored.
3
Tools in this category, all free
0 bytes
Uploaded — there is no server to send to
No
Account, watermark or daily limit
- UUID GeneratorGenerate cryptographically random v4 UUIDs in bulk.
- Secure Password GeneratorGenerate strong passwords locally with a live strength estimate.
- Lorem Ipsum GeneratorGenerate placeholder paragraphs, sentences or words for mockups.
About these tools
For a password generator, running locally is not a nicety — it is the whole point. A password produced on a server has, by definition, existed somewhere other than your machine. Everything here is drawn from your browser’s cryptographic random source, the same one used for real key material, and never leaves the page.
That source is also what separates a usable generator from a decorative one. `Math.random()` is fast, convenient and completely unsuitable for anything that needs to be unguessable, because it is a predictable sequence rather than a random one. The password and UUID tools both use the Web Crypto API instead.
One consequence of doing this properly: the values are generated in your browser after the page loads, not baked into the page when the site was built. If they were built in, every visitor would receive the same password until the page updated — which the build check on this site explicitly tests for.
Frequently asked questions
No. The password is created in your browser, exists only in that tab, and is gone when you close it. There is no server involved at any point, and analytics records only that the tool was used — never the value.
The password and UUID generators both draw from the Web Crypto API, your browser’s cryptographically secure random source. They do not use Math.random(), which is predictable and unsuitable for anything that must not be guessable.
Length, far more than complexity. A long password from a large character set is much harder to attack than a short one with substitutions, and the strength estimate shown here reflects that. A unique password per account matters more than any single password’s strength.
The rest of the toolbox
Every category works the same way — the file or the text stays on your device.