Last updated: October 28, 2026
What are cookies?
Cookies are small text files stored on your device by websites. Similar technologies, such as local storage, work in a comparable way. We use the term "cookies" for all of them in this policy.
How we use them
| Name / provider | Purpose | Type | Duration |
|---|---|---|---|
gpdf-theme (local storage, Golden PDF) | Remembers your light or dark theme. | Essential | Until cleared |
_ga, _ga_* (Google Analytics) | Distinguish visitors and measure site usage in aggregate. | Analytics (consent) | Up to 2 years |
Google AdSense / DoubleClick cookies (for example __gads, __gpi, IDE) | Deliver, personalize, limit the frequency of and measure ads, and help prevent fraud. | Advertising (consent for personalization) | Up to 13 months |
Your choices
- If you are in the EEA, UK or Switzerland, a consent message from Google lets you accept or refuse analytics and ad cookies. Use the button below, or "Cookie settings" in the footer, to change your choice at any time.
- Block or delete cookies in your browser settings. Essential features of the site will keep working, but you may need to set your preferences again.
- Manage personalized ads from Google at adssettings.google.com or aboutads.info.
More information
See our Privacy Policy, or learn how Google uses data at policies.google.com. Questions? Contact us.