Privacy policy
This policy describes what CZNull does and does not receive when you use a tool, generator, calculator, or GPU test, when you load a page, and when you send email.
Last updated:
Who this covers
It applies to cznull.com and the pages in this catalog. It is for people using those pages. It is not legal advice. Related: terms of use and disclaimer.
What stays in your browser
When you hash text, encode or decode, format JSON, generate a UUID or password, or run a GPU test, that work happens in the page you opened. CZNull does not receive the paste, the generated value, or the frames.
If you copy a result to another app or site, that is outside this policy. Keep generated passwords and other secrets in a place you trust.
What happens when you visit
Loading a page is a normal web request. Systems that deliver the site may record ordinary visit information such as the page address, time, and technical details your browser sends with any request (including IP address). We use that only to operate and protect the site, for example to see that pages load and to investigate abuse. We do not use it to rebuild the contents of a tool you used.
We do not ask you to create an account. We do not keep a history of your hashes, encodings, generated IDs, passwords, or GPU runs as a user profile.
If you email us
If you write to the address on the contact page, we receive whatever you put in the message: your email address, the body, and any files you attach. We use that to reply and, when it helps, to fix a page.
Do not send passwords, private keys, or dumps of personal data you do not need us to see. Describe the problem (URL, what you did, what you expected) instead of forwarding secrets.
Appearance and similar storage
The site may remember light or dark appearance on this device so the next visit matches what you chose. That stays in the browser. You can clear it with the browser's site-data or cache controls.
We do not use that preference to identify you across other websites.
Advertising
Pages do not currently display advertising. If that changes, we will update this policy so you can see what, if anything, a third party might receive from a visit.
We do not sell this information
We do not sell your email or visit information. We do not share tool input, because we do not receive it. We may disclose information if required by law or to protect the site and other visitors (for example, investigating an attack).
Children
CZNull is not directed at children under 13, and we do not knowingly collect personal information from them. If you believe a child has sent us personal information by email, contact us and we will delete that correspondence.
Access and deletion
There is no account to download. For email you sent us, you can ask us to delete that correspondence. We may retain a minimal record if the law requires it (for example, to document a security report).
Changes
If this policy changes in a way that affects how we treat a visit or an email, we will update the date at the top of this page. Continued use of the site after an update means the new text applies to later visits.