Privacy Policy

Last updated: 10 November 2026

This policy explains what information is and is not collected when you use CRC Calculator at crc.runkodo.com ("the site").

What you type or upload

All calculations run in your browser. The text, hex data and files you enter into the calculators are processed on your own device by JavaScript and are never sent to us or to any server. We cannot see them, and we do not store them.

The site has no user accounts, no sign-up and no comment forms, and it does not ask for your name, email address or any other personal details.

Hosting and server logs

The site is delivered by Cloudflare. Like any web host, Cloudflare processes technical request data in order to deliver pages and protect against abuse: your IP address, browser type, the page requested and the time of the request. This is handled under Cloudflare's privacy policy. We do not run our own analytics or visitor-tracking scripts on this site.

Advertising and cookies

The site is funded by advertising served through Google AdSense.

• Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this site or other websites.
• Google's use of advertising cookies enables it and its partners to serve ads to you based on your visits to this site and other sites on the Internet.
• You can opt out of personalised advertising in Google Ads Settings, or opt out of some third-party vendors' use of cookies at aboutads.info.
• More detail is available in How Google uses information from sites or apps that use its services.

The site itself sets no cookies of its own and stores nothing in your browser. Any cookies you see come from the advertising service described above. You can block or delete cookies in your browser settings; the calculators work the same without them.

Children

The site is a technical tool for developers and engineers. It is not directed at children, and we do not knowingly collect personal information from anyone.

Changes to this policy

If the way the site handles data changes — for example if a new third-party service is added — this page will be updated and the date at the top will change.

Contact

Questions about this policy can be sent to support@runkodo.com.

See also the Terms of Use, or go back to the CRC32 calculator.