1. Information the service stores itself
The service does not set cookies. The editor stores only the items below in your browser storage (local and session storage); this information is not sent to the server and is not used for ads.
| Location and name | Content and purpose | Retention |
|---|---|---|
localStoragepatterndo_umma.drcSettings | Display level settings for each diagnostic (DRC) rule | Until you clear it |
localStoragepatterndo_umma.hint3dTransformDismissed | Whether you dismissed the 3D controls hint | Until you clear it |
localStoragepenSettings.v1 | Pen input settings (auto-wiring, eraser button, finger gestures) | Until you clear it |
localStoragepatterndo.lang | Display language setting (Korean or English) | Until you clear it |
sessionStoragepatterndo_umma.componentClipboard | Parts you copied or cut (for pasting) | Deleted when the tab is closed |
The board itself is kept in the ?b= value of the address bar (compressed data) and
may remain in your browser history. A board is stored on the server only when you create a share
link (kept for 180 days).
2. Hosting and font providers
- Cloudflare: the provider that serves the site. It may use cookies or similar technologies for security and performance while you use the service. The service operator does not use this for ads or tracking users.
- Google Fonts: when web fonts are loaded, your IP address and browser information are sent to Google's servers.
3. Ads (Google AdSense)
Google AdSense ads may be shown on reading pages such as the guides and calculators. No ads are shown on the editor, shared boards, or error screens. When ads are shown, Google and its ad partners may store or read cookies and ad identifiers in your browser and use them for the following purposes.
- Serving ads and limiting how many times they are shown
- Providing ads that match your interests (personalized ads, depending on consent and settings)
- Measuring ad performance and preventing invalid clicks
| Typical cookies (examples) | Set by | Purpose |
|---|---|---|
__gads, __gpi | This site (Google ad code) | Limiting ad impressions, measuring ad performance |
IDE, DSID, and others | Google ad domains such as doubleclick.net | Personalized ads, measuring ad effectiveness |
The names and retention periods of cookies Google uses may change according to Google's policies, and the exact current list is in Google's cookie information.
4. How to refuse or delete
- Turn off personalized ads: you can disable personalized ads in Google Ad Settings. You can also disable third-party ad cookies at aboutads.info.
- Delete cookies and storage: clear this site's data from "Clear browsing data" (Chrome, Edge) or "Manage cookies and website data" (Safari, Firefox) in your browser settings. The editor's settings return to their initial state.
- Block cookies: if you block third-party cookies in your browser, ad cookies are not stored. The service is fully usable without cookies, and ads are shown as regular ads.
- European Economic Area, UK, and Switzerland: in these regions a window asking for ad-related consent appears first, and you can change your choice at any time.
5. Learn more
Overall handling of personal information is in the Privacy Policy, and the conditions of use are in the Terms of Service. Send any questions to the contact page.