Frequently asked questions

Yes. There is no paid tier, no usage limit, no sign-up, and no trial. The same set of features is available to everyone, today and indefinitely.

No. The site has no concept of accounts — there is nothing to log into and nothing to remember.

No. Because the tools run in your browser, the only limit is your device. Generate a thousand UUIDs a day; we genuinely don't care.

Yes, mostly. Once a tool page is loaded in your browser, it generally runs without an internet connection. You'll lose web fonts and shared assets, but the tool itself will keep working.

Each tool documents the input format it expects. The most common cause is hidden characters from copy-paste (such as smart quotes or non-breaking spaces). Re-typing the input or pasting it into a plain text editor first usually fixes it.

Yes. The output of every tool is yours to use however you like, commercial or otherwise. See the terms of use for the full text.

We don't collect personal data through the tools. The site uses a small amount of analytics to count page views, and the ads we display may set cookies for measurement. See the privacy policy for details.

No. Every tool is written in client-side JavaScript and processes your input on your own device. You can verify this by opening your browser's developer tools and watching the "Network" tab while you use a tool — you won't see outgoing requests with your data.

Yes. The password generator uses crypto.getRandomValues(), a cryptographically secure source of randomness built into your browser. The generated password never leaves your device. You can also disconnect from the internet entirely before using the tool if you want absolute certainty.

Ads pay for the hosting and the time we spend building tools. We've kept them light and outside the working area of each tool. If we ever switch to a worse model — e.g. interstitials or auto-play video — feel free to call us out via the contact form.

A small independent team led by Daniel A., a software engineer in Berlin. The about page has the longer story.

Mostly by reader requests. If three or more people ask for something independently, and it can be implemented well in plain JavaScript, it goes on the roadmap.

Yes, please. The contact form has a "Suggest a new tool" option. Tell us what the tool would do and, ideally, what you currently use as a workaround.

No, sorry. All editorial content on stoolme is written in-house. We don't accept guest posts, sponsored content, or backlink trades.

Use the tools, tell your friends, and don't block our ads. If you'd like to do more, you can email us at [email protected] to arrange a one-off donation.

The current versions of Chrome, Firefox, Safari, and Edge, plus mobile Safari and Chrome on Android. Older browsers will mostly work but may lack newer features like Clipboard API copy buttons.

Some browsers block the Clipboard API outside of HTTPS pages or for users who haven't interacted with the page yet. Make sure you're on https://stoolme.com and that you clicked the page at least once before pressing the copy button. As a fallback, you can always select the output and use Ctrl/Cmd+C.

Parts of it are. The underlying utilities are increasingly being published in a public repository — see the about page for the current state.