Privacy Policy

Last updated: June 2026

This Privacy Policy explains what information Crypto Tools Online collects, how it is used, and your rights regarding that information. Given the security-sensitive nature of this site's tools, we have written it with extra specificity.

The Short Version

Passwords, plaintext inputs, encrypted outputs, JWTs, UUIDs, and any other data you enter into our security and cryptography tools are processed entirely in your browser using the Web Crypto API and JavaScript libraries. None of this data is transmitted to our servers. When you close the tab, all entered data is cleared from browser memory.

What We Do Not Collect

  • Passwords you generate, test, or evaluate with our tools
  • Plaintext or ciphertext from our encryption tools
  • JWT tokens you decode or inspect
  • UUIDs you generate
  • Bcrypt hashes or inputs
  • Your name, email address, or any personally identifiable information (unless you voluntarily contact us)
  • API keys, tokens, or any credentials you might process through our tools

What We Do Collect

We collect standard, anonymized web analytics data to understand how our site is used and to improve our tools. This includes:

  • Pages visited and approximate time spent on each page
  • Browser type and version
  • Operating system
  • Country-level geographic region (not city or street level)
  • Referral source — how you arrived at our site

This data is aggregated and cannot be used to identify you as an individual. We do not sell this data to any third party.

Cookies

We use cookies that are necessary for the site to function correctly. When advertisements are enabled, Google and its advertising partners may also use cookies or similar technologies to deliver, measure, and personalize ads in accordance with their own policies.

Google AdSense and Advertising

This site displays advertisements served by Google AdSense. As part of this service, Google and its partners may use cookies and similar technologies to serve advertisements based on your prior visits to this site and to other websites across the internet.

You can opt out of personalized advertising at any time by visiting Google's Ad Settings or by visiting aboutads.info.

Google, as a third-party vendor, uses cookies to serve ads on this site. Google's use of advertising cookies, including the DoubleClick DART cookie where applicable, enables it and its partners to serve ads based on your visit to this site and other sites on the internet.

You can learn more about how Google uses advertising cookies and opt out of personalized advertising by visiting Google Advertising Policies. Google's broader Privacy Policy is available at policies.google.com/privacy.

Your Rights (GDPR and CCPA)

If you are located in the European Economic Area (EEA) or the United Kingdom, you have rights under the General Data Protection Regulation (GDPR), including the right to access, correct, or delete any personal data we hold about you.

If you are a California resident, you have rights under the California Consumer Privacy Act (CCPA), including the right to know what personal information we collect and the right to request deletion.

Because we collect only anonymized, aggregated analytics data, we are generally unable to identify or retrieve individual records. For specific privacy requests, contact us at [email protected] and we will respond within 30 days.

Data Retention

We do not retain any security-sensitive data you process with our tools — this data never reaches our servers. Anonymized analytics data is retained for up to 26 months in aggregated form, after which it is deleted.

Third-Party Links

Our site may contain links to external websites, including documentation and references for cryptographic standards. We are not responsible for the privacy practices of those sites.

Children's Privacy

Our service is not directed to children under the age of 13. We do not knowingly collect personal information from children.

Changes to This Policy

We may update this privacy policy from time to time. The date at the top of this page reflects the most recent revision. Continued use of the site after any changes constitutes your acceptance of the updated policy.

Contact

Questions or concerns about this privacy policy? Email us at [email protected]. We respond to all privacy-related inquiries within 5 business days.