Chrome extension privacy policy
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This page is the privacy policy for the drawtonomy for GitHub Chrome extension. Last updated: 2026-08-02.
For what the extension does and how to use it, see Preview OpenSCENARIO files on GitHub. The extension is published on the Chrome Web Store.
Single purpose
Section titled “Single purpose”The extension adds an inline preview for OpenSCENARIO (.xosc)
driving-scenario files to github.com pages, rendered by the
drawtonomy web app.
Data the extension collects
Section titled “Data the extension collects”None. The extension has no analytics, no remote logging, no background service worker, and no server of its own. It never transmits browsing history, file contents, or any personal data to the extension author or to any third party.
Data the extension stores locally
Section titled “Data the extension stores locally”- Your two settings (app base URL and auto-preview toggle) in
chrome.storage.sync. - The preview panel height in
chrome.storage.local.
Both stay inside your browser (and your Chrome profile sync, if you have Chrome sync enabled). Nothing else is persisted.
Network requests the extension makes
Section titled “Network requests the extension makes”All requests originate from your browser and only happen on GitHub pages where the extension is active:
api.github.com— one unauthenticated Git Trees request per repository, to find.xoscfiles in subfolders so folder rows can show a preview button and a count.https://www.drawtonomy.com(or the base URL you configure) — loaded in an iframe when you open a preview. The embedded drawtonomy app then fetches the scenario and its road network fromraw.githubusercontent.com, exactly as if you had opened the same link in a browser tab.
The extension itself sends no other requests. Opening a preview is equivalent to visiting drawtonomy.com in a tab; what the web app does (and does not do) with data is documented in Data flow and privacy.
Permissions used
Section titled “Permissions used”| Permission | Why |
|---|---|
storage | Save the two settings and the panel height listed above. |
activeTab | When you open the toolbar popup, read the current tab’s URL to decide whether to show an “Open in drawtonomy” shortcut. Granted only while you interact with the popup. |
Content script on https://github.com/* | Inject the preview buttons and panel into GitHub file pages. The extension runs on no other site. |
Contact
Section titled “Contact”Questions about this policy: see the contact page or open an issue on the drawtonomy GitHub repository.