Legal
Cookie policy
Last updated: October 2026
What this site stores by default
Almost nothing. With "Essential only" selected, the only thing kept is your banner answer, and that lives in your browser's local storage rather than a cookie. No analytics and no advertising identifiers are written. The library works completely with that setting.
The full list
| Item | Set by | Purpose | When |
|---|---|---|---|
| Consent choice | This site (localStorage, not a cookie) | Remembers whether you chose "Accept all" or "Essential only" in the banner. | Always, after you answer the banner once. |
| Advertising cookies | Google AdSense and its partners | Serve and measure ads, cap how often an ad repeats, and (only with consent) personalize ads based on your browsing. | Only while advertising is enabled. With "Essential only", personalized ads stay off. |
| Analytics cookies | Google Analytics 4 | Anonymous page view and referrer counting with IP anonymization. No cross-site tracking, no ad profiles. | Only if analytics is enabled and you accepted non-essential cookies. |
How to control cookies
The banner is the primary control: "Essential only" disables advertising and analytics storage before it starts. Your browser adds a second layer: every major browser lets you block or delete cookies per site. If you accepted earlier and changed your mind, clearing site data in your browser resets everything, then answer the banner again.
For advertising specifically, Google provides a global opt-out at adssettings.google.com. Browsers that send a Global Privacy Control signal are honored as an essential-only choice.
Why advertising cookies exist at all
The library is free because of labeled advertising. Ad networks need some storage to measure that an ad was shown, to avoid showing the identical ad repeatedly, and to avoid billing fraud. None of that requires us to know who you are, and none of it happens before you consent. Details on the data side are in the privacy policy.