We do not sell, rent, trade, or otherwise transfer any user data to third parties — under any circumstances, including approved use cases.
The extension has no backend server that receives your data. There is no user account system, no analytics pipeline, and no advertising infrastructure.
The extension's sole purpose is translating YouTube subtitles. Every network request it makes is directly in service of that function.
Subtitle text is sent to the AI API endpoint you configure (e.g. OpenAI, Gemini, DeepSeek, or our free built-in tier) solely to obtain a translation. This data is not used for model training, profiling, advertising targeting, or any other secondary purpose by us.
Your API keys, language preferences, and display settings are stored exclusively in your browser's chrome.storage.local and never leave your device.
This extension has no financial, credit, or lending functionality whatsoever. No data collected or processed by this extension is used — or could be used — to assess creditworthiness, financial risk, or eligibility for any financial product.
The table below describes every category of data the extension touches.
| Data | Where it goes | Stored? |
|---|---|---|
| YouTube subtitle text | Sent to your configured AI API endpoint for translation | In transit only |
| AI API key | Stored locally; sent only to your configured API endpoint as an auth header | Local only |
| Language preferences | Stored locally in chrome.storage.local | Local only |
| Display settings | Stored locally in chrome.storage.local | Local only |
| Browsing history / URLs | Not accessed or transmitted | Never |
| Personal identity data | Not collected | Never |
| Analytics / telemetry | Not collected | Never |
When you configure your own AI model, subtitle text is sent directly from your browser to that provider's API. We have no visibility into or control over how that provider handles the data. Please review the privacy policy of your chosen provider:
OpenAI Privacy Policy · Google Privacy Policy · DeepSeek Privacy Policy
When using the free built-in tier, requests are routed through our Cloudflare Worker (ycct-proxy.whatareyou.workers.dev) which proxies to an AI provider via Portkey. The Worker validates a shared extension secret to restrict access, injects the API key, and forwards the request. No request content is logged or stored by the Worker.
storage — Used to save your settings (API keys, language preferences, display options) locally in your browser. Data never leaves your device via this permission.
sidePanel — Used to display the settings panel inside Chrome's native side panel UI.
https://www.youtube.com/* — Required to inject the translation button and caption overlay into YouTube pages.
https://*/* — Required because users can configure any HTTPS endpoint as their AI API (e.g. a self-hosted model, a corporate proxy, or any OpenAI-compatible service). The extension cannot know in advance which host you will configure, so broad HTTPS access is necessary. This permission is used exclusively to make translation API calls to your configured endpoint.
If we make material changes to this privacy policy, we will update the effective date above. Continued use of the extension after changes constitutes acceptance of the updated policy.
Questions about this privacy policy?
Open an issue on GitHub or reach out via the Chrome Web Store listing.