Privacy
Last updated: 2026-11-12
Droplet English ("we") offers a Chrome extension and the website dropletenglish.com to help you look up and translate English while you read, and review the words you look up. This policy explains what data we handle and why.
What we collect
| Data | When | Why |
|---|---|---|
| The word or text you select, the sentence around it, and the page's title and URL | Each time you look something up or translate | To show the meaning in context (the AI explanation needs sign-in), count how often you look up a word, and show where you met it when you review |
| Text of pages, PDF pages, emails and YouTube captions you translate with AI precise translation | Only while AI translation is on, which needs sign-in | To translate them. Our server does not keep this text; it only counts how much you use each day, for the free quota, keeping a one-way fingerprint (hash) rather than the text |
| Your favorites and "mastered" marks | When you set them | To plan your reviews |
| Your Google account email and name | Only if you sign in | To keep your word list in sync across the extension, the website and your computers |
| Subscription and payment records | Only if you subscribe to Pro | To start and manage your membership. Card details are handled by Stripe; we never see or store your card number |
The extension reads a page's text only when you look something up on it or turn on translation for it. On YouTube, while Droplet subtitles are on, it reads the captions of the video you are watching. We do not record your browsing history. Quick translation runs inside Chrome on your computer and sends nothing.
Where the data goes
- Your browser: lookups, favorites and the dictionary are stored locally.
- Our server (Supabase, hosted in the Americas): if you sign in, your word list and lookup history are stored in your account so they sync across devices. Only you can read your data.
- Anthropic (Claude API): to explain a word in its sentence, translate a selection, or translate pages, PDFs, emails and captions with AI precise translation, that text is sent through our server to Anthropic's Claude API. Your email and account details are not sent. Anthropic handles this data under its own policies.
- Stripe: if you subscribe to Pro, Stripe processes the payment and handles your payment details under its own policies.
What we do not do
- We do not sell your data.
- We do not use your data for advertising.
- We do not share your data with anyone except the services listed above, which are needed to run the Service.
Your choices
- You can use the extension without signing in; your data then stays in your browser.
- Signing out removes your data from that computer.
- To delete everything stored in your account, email us and we will delete it.