Privacy Policy

Last updated: July 8, 2026

Cardarium is a free Pokémon TCG card database and collection tracker. It is built to be local-first and privacy-friendly: we do not run a database of your personal information. This page explains what happens to your data.

No personal data collection

We do not ask for, collect, or store personal information such as your name or email address.

Your collection stays on your device

When you add cards to your collection, that data is saved in your browser's local storage on your own device only. It is never transmitted to us or stored on any server. Clearing your browser data will erase it, which is why the collection page offers a Back up / Restore feature so you can save a copy yourself.

Analytics

We may use Cloudflare Web Analytics to understand overall traffic (such as page views and general region). It is privacy-focused: it does not use cookies, does not fingerprint visitors, and does not track you across other websites.

Third-party services

Displaying card data requires requests to a few external services. When your browser loads a page, it may contact:

• Cardarium API — our own self-run card database service (hosted on Cloudflare) that provides card names, sets, images, and details.
• Pricing proxy — a Cloudflare Worker that relays market prices from TCGCSV.
• Cloudflare — hosting and content delivery (including card images).

These providers receive standard technical request data (such as your IP address and browser type) as part of serving content, governed by their own privacy policies.

Advertising

Cardarium uses Google AdSense to display ads. Google, as a third-party vendor, uses cookies (including the DoubleClick cookie) to serve ads based on your prior visits to Cardarium and other websites. You can opt out of personalized advertising in Google Ads Settings, and learn more in Google's advertising & cookie policy. Third-party vendors and ad networks may also use cookies to serve ads on this site.

Cookies

Cardarium itself does not use cookies. Your collection is stored in your browser's local storage (not cookies) and never leaves your device. However, our advertising partner (Google AdSense) and its vendors may set cookies to serve and measure ads; see the Advertising section above for details and opt-out options.

Children's privacy

Cardarium is a general-audience card reference tool and does not knowingly collect personal information from anyone, including children.

Changes to this policy

As Cardarium is in active development, this policy may be updated over time. Material changes will be reflected here with a new "last updated" date.

Contact

Questions about this policy? Email [email protected].