Privacy Policy

Overview

DSA Visual is a free educational tool for exploring data structures and algorithms. It has no accounts, no advertising, and no cookies. Whatever you enter into a visualization is processed in your browser and is not sent to a server.

Data Stored in Your Browser

To keep things the way you left them, the site saves a few settings in your browser's storage: your theme, your code display preferences, and the current state of a visualization, which is cleared when you close the tab. This information stays on your device, and you can delete it at any time in your browser settings.

Hosting and Usage Statistics

DSA Visual is hosted by Vercel Inc. As with any website, the hosting servers handle the technical information your browser sends with each request, such as its IP address, in order to deliver the pages and keep the service secure.

The site also uses Vercel's cookieless usage statistics to see how often pages are visited and how quickly they load. These statistics are aggregated and do not identify individual visitors. They are not used for advertising or profiling, and no data is sold.

Vercel processes this information on behalf of DSA Visual and keeps it only as long as these purposes require. Vercel is based in the United States and participates in the EU-U.S. Data Privacy Framework. Where the GDPR applies, the legal basis is the legitimate interest in operating, securing, and improving the site (Art. 6(1)(f) GDPR). Vercel's documentation has the details: Web Analytics and Speed Insights.

Your Rights

Depending on where you live, data protection law may give you rights over personal data about you, such as the right to access, correct, or delete it, to restrict or object to its processing, and to complain to your local data protection authority. DSA Visual does not hold information that identifies you, so there is normally nothing to look up or delete, and you can clear the data stored in your browser yourself at any time.

Changes to This Policy

This policy may be updated from time to time. The current version is always available on this page.