HanziHover
Privacy Policy
Introduction
This Privacy Policy describes how HanziHover ("we", "our", or "the Extension") collects, uses, and protects your information. We are committed to being clear and transparent about our data practices.
Information We Collect
HanziHover is built to collect as little as possible. Here's everything that exists:
- Account email. If you choose to create an account (email + password) so you can save words, your email address is collected and managed by our backend provider, Supabase, for authentication purposes only.
- Word bank entries. If you save a word, we store the word (simplified and traditional characters), its pinyin, its English definitions, the date you added it, and the URL of the page you were reading when you saved it. This is stored in our Supabase database, tied to your account.
- Nothing else. We do not collect browsing history, page content, analytics, or any data about pages you have not explicitly saved a word from. Looking up a word's pinyin and definition happens entirely offline, using a dictionary bundled with the Extension — no lookup is ever sent anywhere.
You can use HanziHover's core hover-lookup feature fully without creating an account. An account is only required if you want to save words and sync your word bank across devices.
How We Use Your Information
- Your email is used solely to authenticate you and let you access your own word bank.
- Your saved words are used solely to display and manage your personal word bank within the Extension.
- We do not use your information for advertising, profiling, or any purpose other than providing the features described above.
Third-Party Services
HanziHover uses Supabase to provide account authentication and to store word bank data. Supabase acts as our database and authentication provider; we do not share your data with any other third party, and we do not sell your data to anyone.
Data Storage and Security
- Word bank data and account credentials are stored in our Supabase project, protected by database-level access rules (Row Level Security) that ensure you can only ever access your own saved words.
- Your session is stored locally in your browser via the Chrome Extension storage API and is not accessible to the websites you visit.
- We do not access, read, or share your word bank data except as needed to provide the service or respond to a support request you initiate.
Your Rights
- Access: View all of your saved words at any time from the Extension's "View Word Bank" page.
- Deletion: Delete individual saved words at any time from that same page, or request deletion of your entire account and all associated data by contacting us (see below).
- Portability: Request a copy of your stored word bank data by contacting us.
- Opt-out: Use the core lookup feature without ever creating an account, avoiding data collection entirely.
Children's Privacy
HanziHover is not directed at children under 13, and we do not knowingly collect personal information from children under 13.
Compliance
GDPR (EU Users)
- We collect only the minimal data described above.
- Account creation is an explicit, opt-in action.
- You may access, delete, or request a copy of your data at any time.
- We do not perform automated decision-making or profiling.
CCPA (California Users)
- We do not sell personal information.
- You may request deletion of your data at any time.
- You may use the Extension's core features without providing any personal information.
Changes to This Policy
We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated "Last updated" date. Continued use of HanziHover after changes constitutes acceptance of the updated policy.
Contact Us
If you have questions, concerns, or requests regarding this Privacy Policy or your data — including account or data deletion requests:
Email: support@dblshift.anonaddy.com
We aim to respond to all inquiries within 48 hours.